GRB110205A

This page lists all entries on GRB110205A in GRBweb

Summary IPN Swift GCN 11629 GCN 11630 GCN 11631 GCN 11632 GCN 11633 GCN 11634 GCN 11635 GCN 11636 GCN 11637 GCN 11638 GCN 11639 GCN 11640 GCN 11641 GCN 11643 GCN 11644 GCN 11645 GCN 11646 GCN 11647 GCN 11648 GCN 11649 GCN 11650 GCN 11651 GCN 11652 GCN 11653 GCN 11655 GCN 11659 GCN 11661 GCN 11663 GCN 11666 GCN 11670 GCN 11672 GCN 11682 GCN 11692 GCN 11696 GCN 11697 GCN 11726 GCN 11740

Summary table
Variable Value Source
T0 2:02:41 UTC GCN_circulars,Swift Det
ra 164.6297° Swift
decl 67.5253° Swift
pos_error 8.15e-05° Swift
T90 257.0 s Swift
T90_start 2:02:41 UTC Swift
fluence 1.70e-05 erg/cm² Swift
redshift 2.2200
T100 257.0 s
GBM_located False
mjd 55597.08519675926 GCN_circulars,Swift Det
IPN table
GRB_name GRB110205A
ra 164.5875°
decl 67.5167°
pos_error 5.00e-02°
redshift 2.2200
Swift table
GRB_name GRB110205A
t_trigger 2:02:41 UTC
ra 164.6297°
decl 67.5253°
pos_error 8.15e-05°
T90 257.0 s
fluence 1.70e-05 erg/cm²
redshift 1.9800
GCN 11629 table
GRB_name GRB110205A
GCN_number 11629
Detection_method Swift Det
t_trigger 2:02:41 UTC
ra 164.5890°
decl 67.5160°
Circular_text TITLE: GCN CIRCULAR NUMBER: 11629 SUBJECT: GRB 110205A: Swift detection of a burst with an optical candidate DATE: 11/02/05 02:17:32 GMT FROM: David Palmer at LANL A. P. Beardmore (U Leicester), W. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU), M. M. Chester (PSU), J. M. Gelbord (PSU), S. T. Holland (CRESST/USRA/GSFC), N. P. M. Kuin (UCL-MSSL), O. M. Littlejohns (U Leicester), C. B. Markwardt (NASA/GSFC), F. E. Marshall (NASA/GSFC), K. L. Page (U Leicester), D. M. Palmer (LANL), T. Sakamoto (NASA/UMBC), C. J. Saxton (UCL-MSSL), M. H. Siegel (PSU), E. Sonbas (GSFC/USRA/Adiyaman Univ.), M. Stamatikos (OSU/NASA/GSFC), C. A. Swenson (PSU) and T. N. Ukwatta (MSU) report on behalf of the Swift Team: At 02:02:41 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 110205A (trigger=444643). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 164.589, +67.516 which is RA(J2000) = 10h 58m 21s Dec(J2000) = +67d 30' 58" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT lightcurve shows activity with multiple peaks until at least T+300 seconds, with a peak count rate of 4500 counts/s (15-150 keV) at T+210 s. The XRT began observing the field at 02:05:16.8 UT, 155.4 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 164.6321, +67.5230 which is equivalent to: RA(J2000) = 10h 58m 31.70s Dec(J2000) = +67d 31' 22.7" with an uncertainty of 6.2 arcseconds (radius, 90% containment). This location is 64 arcseconds from the BAT onboard position, within the BAT error circle. No event data are yet available to determine the column density using X-ray spectroscopy. UVOT took a finding chart exposure of 150 seconds with the White filter starting 164 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at RA(J2000) = 10:58:31.12 = 164.62965 DEC(J2000) = +67:31:31.2 = 67.52532 with a 90%-confidence error radius of about 0.63 arc sec. This position is 9.0 arc sec. from the center of the XRT error circle. The estimated magnitude is 18.71 with a 1-sigma error of about 0.15. No correction has been made for the expected extinction corresponding to E(B-V) of 0.01. Burst Advocate for this burst is A. P. Beardmore (apb AT star.le.ac.uk). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)
GCN 11630 table
GRB_name GRB110205A
GCN_number 11630
Detection_method Optical
ra 164.6302°
decl 67.5254°
Circular_text TITLE: GCN CIRCULAR NUMBER: 11630 SUBJECT: GRB 110205A: TAROT Calern observatory optical detection DATE: 11/02/05 02:21:42 GMT FROM: Alain Klotz at CESR-CNRS Klotz A. (CESR-OMP), Gendre B. (ASDC), Lass M. (UWA), Boer M. (OHP-OAMP), Atteia J.L. (LATT-OMP) report: We imaged the field of GRB 110205A detected by SWIFT (trigger 444643) with the TAROT robotic telescope (D=25cm) located at the Calern observatory, France. The observations started 90.6s after the GRB trigger. The elevation of the field decreased from 65 degrees above horizon and weather conditions were good. We detect a new source in the error box given by SWIFT We detected the candidate couterpart mentioned by Beardmore et al. (GCNC 11629) at the following position (+/- 1 arcsec): RA(J2000) = 10h 58m 31.25s DEC(J2000) +67d 31' 31.4" OT optical brightness increased until R~16.7 about 225s after GRB. Then it decreases. Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction. This message may be cited.
GCN 11631 table
GRB_name GRB110205A
GCN_number 11631
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 11631 SUBJECT: GRB 110205A: ROTSE-III, Optical Counterpart is flaring to ~14 mag DATE: 11/02/05 02:39:21 GMT FROM: Brad Schaefer at LSU B. E. Schaefer (Louisiana State), H. Flewelling (IfA/Hawaii), W. Rujopakarn (Steward), T. Guver (U Arizona), report on behalf of the ROTSE collaboration: ROTSE-IIIb, located at McDonald Observatory, Texas, responded to GRB 110205A (Swift trigger 444643). The first image was at 02:04:03.4 UT, 82.0 s after the burst (8.4 s after the GCN notice time). The unfiltered images are calibrated relative to USNO A2.0. On the first images, we detect a 17.0 magnitude source with coordinates: 10:58:31.11 +67:31:31.91 (J2000), with positional uncertainty of 1" or better start UT mag mlim(of image) ---------------------------------- 02:06:00.5 17.0 17.6 This source is at the position of the Swift XRT and UVOT transients, and not visible in DSS (second epoch), 2MASS or the MPChecker database. On our first two sets of ten images, the source is faint, near our limit, while for our third and fourth coadded images the source has significnatly brightened by over two magnitudes, apparently to magnitude around 13.9. Continuing observations are in progress.
GCN 11632 table
GRB_name GRB110205A
GCN_number 11632
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11632 SUBJECT: GRB 110205A: TAROT Calern observatory detection of an optical flare DATE: 11/02/05 02:47:49 GMT FROM: Alain Klotz at CESR-CNRS Klotz A. (CESR-OMP), Gendre B. (ASDC), Lass M. (UWA), Boer M. (OHP-OAMP), Atteia J.L. (LATT-OMP) report: We continue to acquire images the field of GRB 110205A (cf. Klotz et al. GCNC 11630). After a first peak of brightness R~16.7 at t~225s, the flux decreased at R~18 about 360s after the trigger. Then, the brightness increased dramatically and reached R~14.1 at t~1150s. Now the flux decreases slowly: R~15.0 at t~1800s.
GCN 11633 table
GRB_name GRB110205A
GCN_number 11633
Detection_method Optical
ra 164.6296°
decl 67.5252°
Circular_text TITLE: GCN CIRCULAR NUMBER: 11633 SUBJECT: GRB 110205A: Liverpool Telescope Afterglow Confirmation DATE: 11/02/05 02:54:32 GMT FROM: Carole Mundell at ARI, JMU,Liverpool C.G. Mundell, R.J. Smith, Z. Cano (ARI, LJMU) report on behalf of a larger collaboration: The Liverpool Telescope began automatically observing Swift GRB 110205A (Beardmore et al. GCN 11629) with the RINGO2 polarimeter. Subsequent automatic imaging detects the afterglow candidate reported by Beardmore et al., Klotz et al. (GCN 11630) and Schaefer et al. (GCN 11631) at: RA=10:58:31.1 , Dec=+67:31:30.9 (J2000) +/-0.2" with preliminary magnitude R=16.06 mag (wrt USNO B1) at t=924 secs. Observations have stopped due to bad weather.
GCN 11634 table
GRB_name GRB110205A
GCN_number 11634
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 11634 SUBJECT: GRB 110205A: Swift/UVOT Confirmation of Flaring Afterglow DATE: 11/02/05 05:06:33 GMT FROM: Margaret Chester at PSU M. M. Chester(PSU) and A. P. Beardmore report on behalf of the Swift/UVOT team: The Swift/UVOT obtained three finding chart exposures of the field of GRB 110205A (A. P. Beardmore et al., GCN Circ. 11629) which show the brightening reported by Klotz et al. (GCN Circ. 11630 and 11632) and Schaefer et al. (GCN Circ. 11631). Preliminary magnitudes using the UVOT photometric system (Poole et al. 2008, MNRAS, 383, 627) are: Filter T_start(s) T_stop(s) Exp(s) Mag Mag_err white_FC 164 314 150 18.71 0.15 u_FC 321 571 250 18.17 0.15 white_FC 875 1025 150 15.4 0.4 Observations are continuing.
GCN 11635 table
GRB_name GRB110205A
GCN_number 11635
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 11635 SUBJECT: GRB 110205A: Possible Lick/Kast redshift DATE: 11/02/05 06:30:21 GMT FROM: Jason Prochaska at UCO/Lick Obs R. da Silva (UCO/Lick), M. Fumagalli (UCO/Lick), G. Worseck (UCO/Lick), and X. Prochaska (UCO/Lick) report on behalf of GRAASP: "We have observed GRB 110205A with the Kast dual spectrometer on the 3m Lick telescope for a series of three 1800s exposures starting at UT 04:47 under variable conditions and at high air mass. We observe a significant absorption feature (EW > 100mA) at ~3600Ang which we interpret as a z~1.98 DLA associated with the GRB host. We identify additional absorption features at ~3875A and 3980A which are roughly consistent with OI 1302 and CII 1334 transitions at the coincident redshift. On the other hand, we do not detect a significant feature at CIV nor any significant features redward of ~6000Ang where we would expect FeII 2344, 2374, and 2382 absorption." Further analysis is in progress.
GCN 11636 table
GRB_name GRB110205A
GCN_number 11636
Detection_method correction
Circular_text TITLE: GCN CIRCULAR NUMBER: 11636 SUBJECT: GRB 110205A: PAIRITEL NIR Afterglow Detection DATE: 11/02/05 06:30:31 GMT FROM: Adam Morgan at U.C. Berkeley A. N. Morgan, C. R. Klein, and J. S. Bloom (UC Berkeley) report: We observed the field of GRB 110205A (Beardmore et al., GCN 11629) with the 1.3m PAIRITEL located at Mt. Hopkins, Arizona. Observations began at 2011-Feb-05 05h14m03s UT, ~3.2 hours after the Swift trigger. In mosaics (effective exposure time of 0.50 hours) taken simultaneously in the J, H, and Ks filters, we detect a source at the position of the optical afterglow (Klotz et al., GCN 11630; Schaefer et al., GCN 11631; Mundell et al., GCN 11633). The preliminary photometry yields: post burst t_mid (hr) exp.(hr) filt mag m_err 3.59 0.50 J 16.74 0.05 3.59 0.50 H 15.81 0.05 3.59 0.50 Ks 15.19 0.07 All magnitudes are given in the Vega system, calibrated to 2MASS. No correction for Galactic extinction has been made to the above reported values. Observations are continuing.
GCN 11637 table
GRB_name GRB110205A
GCN_number 11637
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11637 SUBJECT: GRB 110205A: GRAS005 optical observations DATE: 11/02/05 07:29:33 GMT FROM: Veli-Pekka Hentunen at Taurus Hill Obs,A95 Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill Observatory, Varkaus, Finland) report: GRAS 005 (Global-Rent-a-Scope, Mayhill, New Mexico) Takahashi Epsilon 250 10" FL 850 mm and SBIG ST-10XME camera were used to detect GRB 110205A optical afterglow. The observations were started at 2011-02-05 02:56:38 (UT) and stopped at 2011-02-05 04:24:38 (UT). Four unfiltered and four photometric R observations with 300s and 600s exposure times were made. The afterglow was detected at following position RA 10 58 31.16 and DEC +67 31 31.1 consistent those given by Klotz A. et al. (GCN 11630) to within positional errors. The following magnitudes were obtained from the observations using NOMAD1 1574-0155978 (R = 16.100) as the comparison: Tmid(s)+T0 Filter Exp (sec) Mag Mag err Limit 3537 unfilt 600 16.3 0.1 19.7 4249 Rc 600 16.5 0.1 18.9 5327 unfilt 300 16.8 0.1 19.7 5858 Rc 600 17.0 0.1 18.9 6379 Rc 300 17.3 0.1 18.9 6903 unfilt 600 17.3 0.1 19.7 7993 Rc 300 17.6 0.1 18.9 8367 unfilt 300 17.6 0.1 19.7 A jpg image of the 600sec clear filter observation is available at the following URL link: http://cutenews.kassiopeia.net/data/upimages/GRB110205A.jpg
GCN 11638 table
GRB_name GRB110205A
GCN_number 11638
Detection_method Optical
redshift 2.2200
Circular_text TITLE: GCN CIRCULAR NUMBER: 11638 SUBJECT: GRB 110205A: FAST Redshift DATE: 11/02/05 07:57:29 GMT FROM: S. Bradley Cenko at Caltech S. B. Cenko (UC Berkeley), J. L. Hora (CfA), and J. S. Bloom (UC Berkeley) report on behalf of a larger collaboration: We obtained a pair of spectra of the optical afterglow of GRB 110205A (Beardmore et al., GCN 11629) with the FAST spectrograph mounted on the FLWO 1.5 m telescope. Observations began at 6:27 UT (~ 4.5 hours after the burst) and cover the wavelength range from 3500-7400 A. As reported by da Silva et al (GCN 11635), the spectrum exhibits a prominent DLA absorption feature; however, we observe this feature at a slightly larger wavelength (~ 3900 A). We further identify a series of narrow absorption features, including Si II, Si II*, C IV, and Al II, at a common redshift of z=2.22. The detection of Si II*, together with the DLA system, strongly suggest this is the host galaxy of GRB 110205A.
GCN 11639 table
GRB_name GRB110205A
GCN_number 11639
Detection_method Swift-XRT Det
ra 164.6297°
decl 67.5252°
Circular_text TITLE: GCN CIRCULAR NUMBER: 11639 SUBJECT: GRB 110205A: Enhanced Swift-XRT position DATE: 11/02/05 08:44:48 GMT FROM: Phil Evans at U of Leicester A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team. Using 3847 s of XRT Photon Counting mode data and 7 UVOT images for GRB 110205A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 164.62969, +67.52521 which is equivalent to: RA (J2000): 10h 58m 31.13s Dec (J2000): +67d 31' 30.8" with an uncertainty of 1.5 arcsec (radius, 90% confidence). This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177). This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN 11640 table
GRB_name GRB110205A
GCN_number 11640
Detection_method Optical
redshift 2.2200
Circular_text TITLE: GCN CIRCULAR NUMBER: 11640 SUBJECT: GRB 110205A: NOT redshift confirmation DATE: 11/02/05 08:49:25 GMT FROM: Annalisa De Cia at U of Iceland Paul Vreeswijk (U. Iceland), Paul Groot (Radboud U. Nijmegen), Philip Carter (U. Warwick), Dong Xu (WIS), Annalisa De Cia, P. Jakobsson (U. Iceland) and Johan Fynbo (DARK) report on behalf of a larger collaboration: We have observed the field of GRB 110205A (Beardmore et al., GCN 11629) with the 2.5m NOT telescope at Roque de los Muchachos Observatory (La Palma, Spain) equipped with ALFOSC starting at 3:25 UT (1.4h after the burst). Despite thick clouds, the optical afterglow is clearly detected at R ~ 16.7 (as compared to nearby USNO-B1.0 stars). Preliminary reduction of the subsequent spectroscopic observations shows a clear DLA and several metal absorption lines (OI/OI*, CII/CII*, CIV, AlII, FeII) at a common redshift z=2.22, confirming the redshift measurement by Cenko et al. (GCN 11638).
GCN 11641 table
GRB_name GRB110205A
GCN_number 11641
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11641 SUBJECT: GRB 110205A: optical flare confirmation DATE: 11/02/05 08:54:23 GMT FROM: Alexei Pozanenko at IKI, Moscow M. Andreev, A. Sergeev (Terskol Branch of Institute of Astronomy), A. Pozanenko (IKI) on behalf of larger GRB follow up collaboration report: We observed field of the Swift GRB 110205A (Beardmore et al, GCN 11629) with Zeiss-600 telescope of Mt.Terskol observatory in R,V filters starting on Feb. 05 (UT) 02:16. We clearly detect optical afterglow (Beardmore et al, GCN 11629, Klotz et al, GCN 11630, Schaefer et al, GCN 11631, Mundell et al, GCN 11633) and confirm the optical flare at ~ 1140 s (Schaefer et al, GCN 11631, Klotz et al, GCN 11632, Chester et al, GCN 11634) with maximal brightness R ~ 13.7. The finding chart and preliminary light curves can be found at http://grb.rssi.ru/GRB110205A/
GCN 11643 table
GRB_name GRB110205A
GCN_number 11643
Detection_method Other
ra 164.6425°
decl 67.5293°
Circular_text TITLE: GCN CIRCULAR NUMBER: 11643 SUBJECT: GRB 110205A: LOAO B/R Observation DATE: 11/02/05 11:53:19 GMT FROM: Myungshin Im at Seoul Nat U Myungshin Im (CEOU/SNU), and Yuji Urata (NCU) on behalf of a larger collaboration We are taking images of the field around GRB 110205A (GCN 11629) in B and R filters using the 1.0m telescope at Mt. Lemmon, AZ, USA, starting at 2011 February 5, 05:19:11 UT (roughly 3.28 hrs after the burst alert). We clearly identify the afterglow (GCN 11630 et al.) in all the image taken so far.. The first image of the observation shows that the afterglow is at R = 18.0 +- 0.1 (Vega), calibrated against a star in the USNO B-1 catalog at RA=10:58:34.2 and Dec=+67:31:45.3. The observation and the further analysis of the data are onging. We thank the LOAO operator, Jae-Hyuck Youn, for his assitance of the observation.
GCN 11644 table
GRB_name GRB110205A
GCN_number 11644
Detection_method Swift-XRT Other
redshift 2.2200
Circular_text TITLE: GCN CIRCULAR NUMBER: 11644 SUBJECT: GRB 110205A: Swift-XRT refined Analysis DATE: 11/02/05 13:47:05 GMT FROM: Kim Page at U.of Leicester A. P. Beardmore (U Leicester) reports on behalf of the Swift-XRT team: We have analysed 14 ks of XRT data for GRB 110205A (Beardmore et al. GCN Circ. 11629), from 145 s to 30.7 ks after the BAT trigger. The data comprise 737 s in Windowed Timing (WT) mode (the first 9 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Beardmore et al. (GCN. Circ 11639). The light curve comprises a number of flares (at ~T0+145 s, T0+175 s to T0+275 s, T0+615 s) followed by a power-law decay. The late-time light curve (from T0+5.1 ks) can be modelled with a power-law decay with a decay index of alpha=1.63 (+/-0.10). A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.420 (+/-0.020). The best-fitting absorption column is 4.2 (+/-0.6) x 10^21 cm^-2, at a redshift of 2.22, in addition to the Galactic value of 1.6 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 1.99 (+0.08, -0.07) and a best-fitting absorption column of 3.5 (+1.6, -1.5) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.7 x 10^-11 (4.2 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Galactic foreground: 1.6 x 10^20 cm^-2 Intrinsic column: 3.5 (+1.6, -1.5) x 10^21 cm^-2 at z=2.22 Photon index: 1.99 (+0.08, -0.07) The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00444643. This circular is an official product of the Swift-XRT team.
GCN 11645 table
GRB_name GRB110205A
GCN_number 11645
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 11645 SUBJECT: GRB 110205A: Newcastle Observatory Optical Observations DATE: 11/02/05 15:37:38 GMT FROM: Michael Cook at Newcastle Obs. Michael J. Cook, Newcastle Observatory report: On 5 February UT, the field of GRB 110205A detected by SWIFT (trigger 444643) was observed, beginning approximately 49 minutes after the GRB trigger, with the Newcastle Observatory 0.4 meter robotic telescope, located in Newcastle, Ontario, Canada (Bortle Class 4-5 sky). Observations were made under transparent skies, but with poor seeing. Weather was good with an ambient temperature of -4C. No Moon was present. Automatic imaging in the V-band detected the afterglow candidate reported by Beardmore et al., Klotz et al. (GCN 11630) at: RA 10: 58: 31.34 DEC +67 31 31.4 (J2000) A 180s calibrated image gives a preliminary magnitude of 15.41 (V-band). The magnitude is estimated with the nearby NOMAD1 star 1574-0155894 (Vmag 15.240) A time-series was taken from 02:52:09 to 07:23:05 and further analysis is in progress. This message is quotable in publications.
GCN 11646 table
GRB_name GRB110205A
GCN_number 11646
Detection_method Swift-BAT Det
ra 164.6030°
decl 67.5330°
Circular_text TITLE: GCN CIRCULAR NUMBER: 11646 SUBJECT: GRB 110205A: Swift-BAT refined analysis DATE: 11/02/05 16:32:29 GMT FROM: Scott Barthelmy at NASA/GSFC GRB 110205A: Swift-BAT refined analysis C. B. Markwardt (GSFC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team): Using the data set from T-239 to ~T+2000 sec from recent telemetry downlinks, we report further analysis of BAT GRB 110205A (trigger #444643) (Beardmore, et al., GCN Circ. 11629). The BAT ground-calculated position is RA, Dec = 164.603, 67.533 deg, which is RA(J2000) = 10h 58m 24.8s Dec(J2000) = +67d 31' 57.1" with an uncertainty of 2.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 29%. The mask-weighted light curve shows many overlapping peaks with a general slow rise starting at ~T-120 sec, with the tallest peak at ~T+210 sec, and ending at ~T+1500 sec. T90 (15-350 keV) is 257 +- 25 sec (estimated error including systematics). The time-averaged spectrum from T-129 to T+377 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.80 +- 0.04. The fluence in the 15-150 keV band is 1.7 +- 0.0 x 10^-5 erg/cm2. The 1-sec peak photon flux measured from T+210.44 sec in the 15-150 keV band is 3.6 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/444643/BA/
GCN 11647 table
GRB_name GRB110205A
GCN_number 11647
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 11647 SUBJECT: Observations GRB 110205A DATE: 11/02/05 16:39:26 GMT FROM: Francois Kugel at Obs.Chante-Perdix,04 Banon,Fr Francois Kugel at Obs.Chante-Perdix,04 Banon,Fr Observer : C. RINNER; F. KUGEL We imaged the field of GRB 110205A detected by SWIFT(trigger 444643) with the 0.5-m F/3 reflector + ccd kai 11k (No filter). The observations started at 04:30:52 (UT) The elevation of the field decreased from 54 degrees above horizon and weather conditions were good. We clearly identify the afterglow and the flux decreases slowly. USNO-SA 2.0 R Exp : hh:mm:ss 180s : 04:32:22 (UT) = 10h58m31.149s +67°31'30.89'' 17.44 +/-0.08 180s : 04:48:32 (UT) = 10h58m31.173s +67°31'30.88'' 17.84 +/-0.16 120s : 05:38:46 (UT) = 10h58m31.173s +67°31'30.86'' 18.09 +/-0.35 120s : 05:51:26 (UT) = 10h58m31.169s +67°31'30.71'' 17.99 +/-0.64 Image & measurement : http://astrosurf.com/obsdauban/pages/GRB110205A.html
GCN 11648 table
GRB_name GRB110205A
GCN_number 11648
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11648 SUBJECT: GRB 110205A: Lulin optical observations and temporal decay index DATE: 11/02/05 17:33:40 GMT FROM: Yuji Urata at Nat. Central U. Yuji Urata, Chia-Jung Chuang (NCU) and Kuiyun Huang (ASIAA) on behalf of EAFON "We are monitoring the optical afterglow of GRB110205A (GCN 11630, 11631) in g', r' and i' filters using the 1.0m telescope at Mt. Lulin, Taiwan. The observations are started at 2011 February 5, 13:02 UT. Based on our r'-band photometry against with the SDSS catalog, the temporal decay index between 40000 and 52740 sec after the burst is about 1.9. The brightness in r'-band at 52740 sec after the burst is 20.64 +/-0.05 mag. The further monitoring observation and analysis are ongoing.
GCN 11649 table
GRB_name GRB110205A
GCN_number 11649
Detection_method Swift-UVOT Other
redshift 2.2200
Circular_text TITLE: GCN CIRCULAR NUMBER: 11649 SUBJECT: GRB 110205A: Swift/UVOT Continuing Observations DATE: 11/02/05 17:55:39 GMT FROM: Margaret Chester at PSU M. M. Chester (PSU) and A. P. Beardmore (U Leicester) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 110205A 164 s after the BAT trigger (Beardmore et al., GCN Circ. 11629). The peak near 1000s reported by Klotz et al. (GCN Circ. 11632) and Andreev et al. (GCN Circ. 11641) is seen in the UVOT optical filters and one of the UV filters (uvw1), consistent with the reported redshift z=2.22 (Cenko et al., GCN Circ. 11638 and Vreeswijk et al., GCN Circ. 11640). The weak detections (2-3 sigma) in uvw2 are probably due to the filter's extended sensitivity in the red. After 5000s, the estimated temporal slope in the white filter is 1.6. Preliminary photometry using the UVOT photometric system (Poole et al. 2008, MNRAS, 383, 627) for the finding chart (FC) and subsequent exposures is: FILTER TSTART TSTOP MAG +/- UL(2o) white_FC 164.0 313.8 18.79 0.07 white 601.9 621.7 17.01 0.08 white 774.6 794.4 15.74 0.06 white_FC 875.4 1025.1 15.36 0.04 white 1181.0 1375.8 15.39 0.05 v 652.0 671.8 15.76 0.11 v 824.3 844.1 14.98 0.08 v 1056.5 1251.8 14.68 0.06 b 577.5 597.3 17.10 0.12 b 750.3 770.1 15.77 0.07 b 1154.7 1351.5 15.33 0.05 u_FC 321.9 571.7 18.24 0.09 u 725.4 745.2 15.59 0.09 u 1130.5 1325.1 15.02 0.06 uvw1 701.0 720.8 18.23 0.41 uvw1 1106.0 1300.8 17.09 0.17 uvm2 676.3 1276.1 19.89 uvm2 1430.1 1795.8 19.60 uvw2 627.4 1226.2 19.89 0.49 uvw2 1381.4 1747.0 19.28 0.41 The values quoted above are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.01 in the direction of the burst (Schlegel et al. 1998).
GCN 11650 table
GRB_name GRB110205A
GCN_number 11650
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11650 SUBJECT: GRB110205A: SMA 1.3mm Observations DATE: 11/02/06 01:03:33 GMT FROM: Ashley Zauderer at CfA Glen Petitpas (SMA), Ashley Zauderer, Edo Berger, Nimesh Patel, Erin Brassfield (Harvard/CfA), Jen Miller, Anil Dosaj (SMA) report: We observed GRB110205A (GCN #11629) with the Submillimeter Array (SMA) at 1.3 mm (225 GHz) starting 1.3 hours after the burst for a duration of 6 hours. No source is detected in coincidence with the optical afterglow (GCN #11629). With a combined 8 GHz of bandwidth, the resulting 3-sigma upper limit is 1.65 mJy.
GCN 11651 table
GRB_name GRB110205A
GCN_number 11651
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 11651 SUBJECT: GRB110205A: MITSuME Okayama Optical Observation DATE: 11/02/06 16:19:56 GMT FROM: Daisuke Kuroda at OAO/NAOJ D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ), S. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 110205A (Beardmore et al., GCNC 11629) with the optical three color (g', Rc and Ic) CCD camera attached to the MITSuME 50cm telescope of Okayama Astrophysical Observatory. The observation started on 2011-02-05 10:37:55 UT (~8.6 hours after the burst). We detected the previously reported afterglow (Klotz et al., GCNC 11630; Schaefer et al., GCNC 11631) in all the three bands. Photometric results and are listed below. We used SDSS catalog for flux calibration. #T0+[day] MID-UT T-EXP[sec] g' g'_err Rc Rc_err Ic Ic_err ---------------------------------------------------------------------- 0.39965 11:38:11 6120.0 >20.1 19.4 0.2 18.5 0.2 0.48327 13:38:36 6300.0 20.6 0.3 20.4 0.3 19.7 0.3 0.56675 15:38:49 6300.0 21.2 0.4 19.8 0.2 19.7 0.2 ---------------------------------------------------------------------- T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]
GCN 11652 table
GRB_name GRB110205A
GCN_number 11652
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 11652 SUBJECT: GRB110205A: MITSuME Ishigakijima Optical Observation DATE: 11/02/06 16:23:27 GMT FROM: Daisuke Kuroda at OAO/NAOJ D. Kuroda (OAO, NAOJ), H. Hanayama, T. Miyaji, J. Watanabe (IAO, NAOJ), K. Yanagisawa (OAO, NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 110205A (Beardmore et al., GCNC 11629) with the optical three color (g', Rc and Ic) CCD camera attached to the Murikabushi 1m telescope of Ishigakijima Astronomical Observatory. The observation started on 2011-02-05 12:15:24 UT (~10.2 hours after the burst). We detected the previously reported afterglow (Klotz et al., GCNC 11630; Schaefer et al., GCNC 11631) in all the three bands. Photometric results are listed below. We used SDSS catalog for flux calibration. #T0+[day] MID-UT T-EXP[sec] g' g'_err Rc Rc_err Ic Ic_err ---------------------------------------------------------------------- 0.45691 13:00:38 4500.0 21.0 0.2 20.2 0.1 19.8 0.2 0.76876 20:29:42 4620.0 21.5 0.2 20.8 0.1 20.2 0.2 ---------------------------------------------------------------------- T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]
GCN 11653 table
GRB_name GRB110205A
GCN_number 11653
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11653 SUBJECT: GRB 110205A : Lulin optical observation DATE: 11/02/06 17:09:26 GMT FROM: Yuji Urata at Nat. Central U. Yuji Urata, Chia-Jung Chuang (NCU) and Kuiyun Huang (ASIAA) on behalf of EAFON report "We made a further optical afterglow observation with r'-band using the Lulin 1m telescope. The stacked image made from 7 frames with 600s exposure shows the afterglow clearly. The brightness calibrated against with the SDSS catalog is r'=22.49+/-0.12 at 1.53 days after the burst. This is consistent with the extrapolation of the simple power-law decay with the temporal index of about 1.9 from our previous report (GCN 11648)."
GCN 11655 table
GRB_name GRB110205A
GCN_number 11655
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 11655 SUBJECT: GRB 110205A: Lightbuckets Optical Observations DATE: 11/02/06 22:19:34 GMT FROM: Tilan Ukwatta at GSFC/GWU T. N. Ukwatta (MSU), E. Sonbas (GSFC/USRA/Adiyaman Univ.), N. Gehrels (GSFC), J. Linnemann (MSU), K. Tollefson (MSU), and U. Abeysekara (MSU) We observed the Swift GRB 110205A (Beardmore et al., GCN 11629) with the Lightbuckets 0.61m rental telescope LB-0001 in Rodeo, NM, USA. Under good weather conditions, two observations were carried out in the Luminance and R filter starting 2011-02-05 at 07:45:58 UT (~ 5.7 hours after the GRB trigger) and 09:39:21 UT (~7.6 hours after the GRB trigger). Another followup observation was performed on R filter starting 2011-02-06 at 09:29:04 UT (~1.31 days after the trigger) under acceptable weather conditions. The burst afterglow is clearly detected in the first two observations and estimated magnitudes are given below: Time after trigger Exposure (s) Filter Magnitude 5.7 hours (0.24 days) 1 x 300 Lum 19.0 +/- 0.1 7.6 hours (0.31 days) 1 x 300 R 19.6 +/- 0.2 31.4 hours (1.31 days) 2 x 300 R > 20.1 The afterglow, not corrected for Galactic extinction, is calibrated against the USNO-B1.0 catalog. We acknowledge the helpful assistance of the Lightbuckets staff, in particular Stephen G. Cullen.
GCN 11659 table
GRB_name GRB110205A
GCN_number 11659
Detection_method Konus-Wind Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 11659 SUBJECT: Konus-Wind observation of GRB 110205A DATE: 11/02/07 11:34:21 GMT FROM: Valentin Pal'shin at Ioffe Inst S. Golenetskii, R.Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind team report: The long GRB 110205A (Swift-BAT trigger #444643: Beardmore et al., GCN 11629; Markwardt et al., GCN 11646) was detected by Konus-Wind in the waiting mode. The burst light curve shows a multipeaked pulse started at ~T0(BAT) with a total duration of ~330 s. There is a weak pulse at ~T0(BAT)-1360 s (seen by the same detector which observed GRB 110205A; the detection significance is ~4.5 sigma in the G1+G2 (20-360 keV) band; the pulse duration is ~25 s), which might be a burst precursor. There is a hint of a weak soft tail seen up to ~T0+1200 s. As observed by Konus-Wind, the burst had a fluence of (3.66 +/- 0.35)x10^-5 erg/cm2 and a 3-s peak flux measured from T0+211.6 s of (5.1 +/- 0.7)x10^-7 erg/cm2/s (both in the 20 - 1200 keV energy range). Modeling the K-W 3-channel time-integrated spectrum (from T0 s to T0+330 s) by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) yields alpha = -1.52 +/- 0.14, and Ep = 222 +/- 74 keV. Assuming z = 2.22 (Cenko & Hora, GCN 11638; Vreeswijk et al. GCN 11640) and a standard cosmology model with H_0 = 71 km/s/Mpc, Omega_M = 0.27, Omega_Lambda = 0.73, the isotropic energy release E_iso is (1.36 +/- 0.13)x10^54 erg, the peak luminosity (L_iso)_max is (5.9 +/- 0.8)x10^51 erg/s, and Ep_rest is 715 +/- 238 keV. All the quoted errors are estimated at the 1 sigma confidence level. The K-W light curve of this burst is available at http://www.ioffe.rssi.ru/LEA/GRBs/GRB110205A/
GCN 11661 table
GRB_name GRB110205A
GCN_number 11661
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11661 SUBJECT: GRB110205A: CARMA 3mm Observations DATE: 11/02/07 16:13:16 GMT FROM: Ashley Zauderer at CfA GRB110205A: CARMA 3mm Observations Ashley Zauderer, Edo Berger (Harvard) and Dale Frail (NRAO) report: We observed GRB110205A (GCN 11629) with CARMA at 3 mm (93 GHz) starting 2.1 hours after the burst for a total on-source time of 2.3 hours. No millimeter emission is detected in coincidence with the optical afterglow position (GCN 11629) to a 3-sigma limit of 0.6 mJy. We thank the CARMA observatory staff for support of these observations.
GCN 11663 table
GRB_name GRB110205A
GCN_number 11663
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11663 SUBJECT: GRB 110205A: WSRT radio observation DATE: 11/02/07 17:35:33 GMT FROM: Alexander van der Horst at NASA/MSFC A.J. van der Horst (USRA), C. Kouveliotou (NASA/MSFC), A.P. Kamble (U of Wisconsin Milwaukee) and R.A.M.J. Wijers (U of Amsterdam) report on behalf of a larger collaboration: "We observed the position of the GRB 110205A afterglow at 4.9 GHz with the Westerbork Synthesis Radio Telescope at February 6 19.44 UT to February 7 07.41 UT, i.e. 1.72 - 2.22 days after the burst (GCN 11629). We do not detect a radio source at the position of the optical counterpart (GCN 11633). The three-sigma rms noise in the map around that position is 105 microJy per beam. The formal flux measurement for a point source at the position of the optical counterpart is 44 +/- 35 microJy. We would like to thank the WSRT staff for scheduling and obtaining these observations."
GCN 11666 table
GRB_name GRB110205A
GCN_number 11666
Detection_method correction
Circular_text TITLE: GCN CIRCULAR NUMBER: 11666 SUBJECT: GRB 110205A - Continued PAIRITEL NIR Observations DATE: 11/02/07 22:24:21 GMT FROM: Adam Morgan at U.C. Berkeley A. N. Morgan and J. S. Bloom (UC Berkeley) report: We continued to observe the location of the NIR afterglow of GRB 110205A (Morgan et al. GCN 11636) with the 1.3m PAIRITEL located at Mt. Hopkins, Arizona throughout the night of February 5th and again on 2011-02-06. The afterglow continued to be well detected throughout the first night. The preliminary photometry yields: post burst t_mid (hr) exp.(hr) filt mag m_err 4.63 0.64 J 17.01 0.05 4.63 0.64 H 16.26 0.06 4.63 0.64 Ks 15.43 0.07 5.63 0.64 J 17.23 0.06 5.63 0.64 H 16.37 0.07 5.63 0.64 Ks 15.71 0.09 6.63 0.64 J 17.46 0.07 6.63 0.64 H 16.71 0.09 6.63 0.64 Ks 16.0 0.1 7.64 0.64 J 17.9 0.1 7.64 0.64 H 17.0 0.1 7.64 0.64 Ks 16.3 0.2 8.64 0.64 J 17.8 0.1 8.64 0.64 H 17.3 0.2 8.64 0.64 Ks 16.3 0.2 9.64 0.64 J 18.2 0.2 9.64 0.64 H 17.5 0.3 9.64 0.64 Ks 16.8 0.3 10.6 0.64 J 18.4 0.2 10.6 0.64 H 17.6 0.3 10.6 0.64 Ks 16.7 0.3 30.7 4.45 J >20.1 3sig 30.7 4.45 H >19.0 3sig 30.7 4.45 Ks >18.3 3sig The late time decay index is consistent with that seen in the optical (Urata et al. GCN 11648). All magnitudes are given in the Vega system, calibrated to 2MASS. No correction for Galactic extinction has been made to the above reported values.
GCN 11670 table
GRB_name GRB110205A
GCN_number 11670
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11670 SUBJECT: GRB 110205A : HCT optical observations DATE: 11/02/08 09:28:45 GMT FROM: D.K. Sahu at Indian Inst of Astrophysics,Bangalore D.K. Sahu and Pepsi Anto (Indian Institute of Astrophysics, Bangalore) report. Optical afterglow of the Swift GRB 110205A (Beardmore et al., GCN 11629) was observed with the 2m. Himalayan Chandra Telescope of the Indian Astronomical Observatory, Hanle, India, under poor sky condition. The optical afterglow was observed in Bessell R filter and was detected in all the frames. The preliminary magnitudes of the optical afterglow, calibrated using NOMAD1 1574-0155978 (R = 16.100) (Veli-Pekka et al., GCN11637), are as under: Date Mid UT Exposure R mag 05-02-2011 20:50 6 x 180sec 21.11 +/- 0.05 05-02-2011 21:13 3 x 180sec 21.19 +/- 0.08 05-02-2011 22:09 1 x 600sec 21.18 +/- 0.10 This message may be cited.
GCN 11672 table
GRB_name GRB110205A
GCN_number 11672
Detection_method Optical
ra 164.6425°
decl 67.5293°
Circular_text TITLE: GCN CIRCULAR NUMBER: 11672 SUBJECT: GRB 110205A: optical observations in Mondy observatory DATE: 11/02/08 19:00:44 GMT FROM: Alina Volnova at SAI MSU A. Volnova , E. Klunko (ISTP), A. Pozanenko (IKI) on behalf of larger GRB follow up collaboration report: We observed the Swift GRB 110205A (Beardmore et al., GCN 11629) with AZT-33IK telescope of Sayan observatory (Mondy) on Feb.05 between (UT) 12:06:19 and 20:25:34, and we took several series in R-band with exposures 60 - 180s. The optical afterglow (Beardmore et al., GCN 11629) is clearly detected on the stacked images. The photometry calibration performed against the USNO-B1.0 star 1575-0155390 ((J2000) RA = 10:58:34.20, Dec = +67:31:45.3), assuming R = 16.7: T0+ Filter, Exposure, OT mag., UpperLimit (mid, d) (s) 0.43968 R 51x60 19.88+/-0.04 21.9 0.71912 R 25x120+20x180 20.85+/-0.05 22.8 The power-law decay index during our observation is alpha ~1.8 which is consistent with the index reported by Urata et al., GCN 11648. [GCN OPS NOTE(08aug11): Per author's request, the spelling of the EK author was corrected.]
GCN 11682 table
GRB_name GRB110205A
GCN_number 11682
Detection_method Suzaku WAM Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 11682 SUBJECT: GRB 110205A: Suzaku WAM observation of the prompt emission DATE: 11/02/09 15:19:09 GMT FROM: Satoshi Sugita at Aoyama Gakuin U. S. Sugita (Nagoya U.), K. Yamaoka (Aoyama Gakuin U.), N. Vasquez (Tokyo Tech.), T. Uehara, Y. Hanabata, T. Takahashi, Y. Fukazawa (Hiroshima U.), Y. Terada, M. Tashiro, W. Iwakiri, K. Takahara, T. Yasuda (Saitama U.), M. Ohno, M. Suzuki, M. Kokubun, T. Takahashi (ISAS/JAXA), Y. E. Nakagawa, T. Tamagawa (RIKEN), N. Ohmori, A. Daikyuji, Y. Nishioka, M. Yamauchi (Univ. of Miyazaki), Y. Urata, P. Tsai (NCU), K. Nakazawa, K. Makishima (Univ. of Tokyo), S. Hong (Nihon U.), on behalf of the Suzaku WAM team, report: The long GRB 110205A (Swift/BAT trigger #444643 ; Beardmore et al., GCN 11629; Beardmore et al., GCN 11639,; Markwardt et al., GCN 11646) was detected by the the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy range of 50 keV - 5 MeV at 02:02:41 UT (=T0). The observed light curve shows a multi-peaked structure starting at T0+20s, ending at T0+318s with a duration (T90) of 248 (+/- 51) seconds. The fluence in 100 - 1000 keV was 1.33 (+/- 0.23) x10^-5 erg/cm^2. The 1-s peak flux measured from T0+211s was 1.15 (+/- 0.23) photons/cm^2/s in the same energy range. Preliminary result shows that the time-averaged spectrum from T0+20s to T0+318s is well fitted by a single power-law with a photon index of 2.12 (+/- 0.17) (chi^2/d.o.f = 82.1/50). All the quoted errors are at statistical 90% confidence level. The light curves with 1-sec time resolution for this burst is appeared at: http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/untrig/grb_table.html
GCN 11692 table
GRB_name GRB110205A
GCN_number 11692
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 11692 SUBJECT: GRB 110205A: Swift/BAT and Suzaku/WAM joint spectral analysis DATE: 11/02/10 18:55:44 GMT FROM: Takanori Sakamoto at NASA/GSFC T. Sakamoto (GSFC/UMBC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), D. M. Palmer (LANL), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team): S. Sugita (Nagoya U.), K. Yamaoka (Aoyama Gakuin U.), N. Vasquez (Tokyo Tech.), T. Uehara, Y. Hanabata, T. Takahashi, Y. Fukazawa (Hiroshima U.), Y. Terada, M. Tashiro, W. Iwakiri, K. Takahara, T. Yasuda (Saitama U.), M. Ohno, M. Suzuki, M. Kokubun, T. Takahashi (ISAS/JAXA), Y. E. Nakagawa, T. Tamagawa (RIKEN), N. Ohmori, A. Daikyuji, Y. Nishioka, M. Yamauchi (Univ. of Miyazaki), Y. Urata, P. Tsai (NCU), K. Nakazawa, K. Makishima (Univ. of Tokyo), S. Hong (Nihon U.) (i.e. the Suzaku WAM team): We performed the Swift/BAT and the Suzaku/WAM joint spectral analysis of GRB 110205A (Swift/BAT trigger #444643: Beardmore et al., GCN Circ. 11629, Markwardt et al. GCN Circ. 11646). The joint spectral analysis of the Swift/BAT and the Suzaku/WAM data allows us to derive the broad-band spectral parameters of this burst. The time interval of the spectral data for each instrument is chosen from T0(BAT)+20.2 to T0(BAT)+318.2 sec where T0(BAT) is the trigger time of BAT at 02:02:41.3 UTC. The energy ranges which we used in the joint spectral analysis are 15-150 keV and 100-3000 keV for the Swift/BAT and the Suzaku/WAM respectively. The spectral data of two instruments are fitted with the spectral model multiplied by the constant factor to take into account the systematic effective area uncertainties in the response matrices of each instrument. The spectrum is well fitted with a power-law with exponential cutoff model: dN/dE ~ E^{alpha}*exp(-(2+alpha)*E/Epeak). The constant factors of each instrument agree within 10%. No systematic residual from the best fit model is seen in the spectral data of each instrument. The best fit spectral parameters are: alpha = -1.59 (-0.06/+0.07) and Epeak = 230 (-65/+135) keV (chi2/dof = 96.6/85). A simple power-law fit shows a poor fit to the data (chi2/dof=126.4/86). The best fit spectral parameters for the Band function fixing beta = -2.5 are: alpha = -1.57 (-0.08/+0.10), and Epeak = 200 (-60/+130) keV (chi2/dof = 96.9/85). Our best fit spectral parameters are consistent with the Konus-Wind result based on the 3 channel data (Golenetskii et al. GCN Circ. 11659). The energy fluence in the 15-3000 keV band calculated by a power-law with exponential cutoff model for this 298 sec interval is 2.7 (-0.4/+0.7)x10^-5 erg/cm2. Assuming z = 2.22 (Cenko et al. GCN Circ. 11638; Vreeswijk et al. GCN Circ. 11640) and a standard cosmology model with H_0 = 71 km/s/Mpc, Omega_M = 0.27, Omega_Lambda = 0.73, the isotropic energy release is E_iso = 4.6 (-0.7/+0.4) x10^53 erg in 1 keV to 10 MeV at the GRB rest frame. All the quoted errors are at the 90% confidence level.
GCN 11696 table
GRB_name GRB110205A
GCN_number 11696
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11696 SUBJECT: GRB 110205A: detection of optical linear polarization from CAHA DATE: 11/02/11 11:05:19 GMT FROM: Javier Gorosabel at IAA-CSIC J. Gorosabel (IAA-CSIC), R. Duffard (IAA-CSIC), P. Kubanek (IAA-CSIC & U. of Valencia), A. Guijarro (CAHA), report on behalf of a larger collaboration: "We carried out optical linear polarization observations of the GRB 110205A afterglow (GCN Circ. 11629, Beardmore et al.) using the 2.2m telescope of the Calar Alto Observatory equipped with CAFOS. The data were acquired in the R-band on Feb 5.19879-5.26570 UT (2.73-4.33 hours post burst) with a total exposure time of 10x500s. A preliminary analysis reveals an afterglow linear polarization at a level of P~1.4%. This value is higher than the polarization (P ~< 0.4%) measured for the bright field stars, so we conclude that most of the measured afterglow polarization has very likely an extragalactic origin."
GCN 11697 table
GRB_name GRB110205A
GCN_number 11697
Detection_method correction
Circular_text TITLE: GCN CIRCULAR NUMBER: 11697 SUBJECT: Konus-Wind observation of GRB 110205A (correction to GCN 11659) DATE: 11/02/11 11:35:08 GMT FROM: Valentin Pal'shin at Ioffe Inst V. Pal'shin report on behalf of the Konus-Wind team: The isotropic equivalent energy and peak luminosity of GRB 110205A given in GCN Circular 11659 have been erroneously computed. The correct values for the isotropic equivalent energy is E_iso = (4.34 +/- 0.42)x10^53 erg, and for the isotropic peak luminosity is (L_iso)_max = (1.95 +/- 0.27)x10^52 erg/s (assuming z = 2.22 (Cenko & Hora, GCN 11638; Vreeswijk et al. GCN 11640) and a standard cosmology model with H_0 = 71 km/s/Mpc, Omega_M = 0.27, Omega_Lambda = 0.73). I thank Max De Pasquale and Takanori Sakamoto for pointing this out to me and I apologize for the error.
GCN 11726 table
GRB_name GRB110205A
GCN_number 11726
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11726 SUBJECT: GRB 110205A: Konkoly optical observations DATE: 11/02/14 15:40:15 GMT FROM: Janos Kelemen at Konkoly Obs/Hungary J. Kelemen (kelemen at konkoly.hu) on behalf of the GRB OT observing program at the Konkoly Observatory. Starting on 05/02/2011 we observed the field of GRB 110205A detected by Swift (trigger #444643; Beardmore et al., GCN 11629)) with a 60/90 cm Schmidt telescope located at the Mountain Station of the Konkoly Observatory using V,R,I filters. Although the OT was visible on the frames we coadded images to achieve better S/N ratio due to the cloudy weather. The time column contains seconds counting from the trigger (J.D. 2455597.58520) Time Exp Mag. Error. Filter Flag. [s] [s] [3-sigma] ------------------------------------------------- 61782 300 19.53 0.5 V 66022 1800 18.97 0.4 R 70312 300 19.63 0.4 V 71671 1500 19.92 0.5 R 74194 1500 20.11 0.5 I 75323 300 19.67 0.4 V 159722 2700 21.52 0.6 R Upper Level --------------------------------------------------
GCN 11740 table
GRB_name GRB110205A
GCN_number 11740
Detection_method VLA Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 11740 SUBJECT: GRB110205A: EVLA Observations DATE: 11/02/16 17:37:36 GMT FROM: Ashley Zauderer at CfA A. Zauderer (Harvard), D. Frail (NRAO), and E. Berger (Harvard) report: We observed the position of GRB 110205A (GCN 11629) with the EVLA starting 1.2 days after the burst. Preliminary reduction of these data gives a flux density of 182 +/-12 microJy at a frequency of 22 GHz. Further EVLA observations are on-going. We thank the EVLA staff for their support of these observations.