GRB101008A

This page lists all entries on GRB101008A in GRBweb

Summary Fermi GBM IPN Swift GCN 11318 GCN 11319 GCN 11320 GCN 11321 GCN 11322 GCN 11324 GCN 11325 GCN 11326 GCN 11327 GCN 11328 GCN 11329 GCN 11330 GCN 11352 GCN 11353

Summary table
Variable Value Source
GRB_name_Fermi GRB101008697
T0 16:43:13.049 UTC Fermi_GBM
ra 328.8753° Swift
decl 37.0671° Swift
pos_error 2.59e-04° Swift
T90 8.96 s Fermi_GBM
T90_error 1.846 s Fermi_GBM
T90_start 16:43:13.049 UTC Fermi_GBM
fluence 1.35e-06 erg/cm² Fermi_GBM
fluence_error 4.34e-08 erg/cm² Fermi_GBM
T100 105.951 s
GBM_located False
mjd 55477.69667880787 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB101008697
trigger_name bn101008697
ra 328.8750°
decl 37.0672°
datum 2010-10-08
t_trigger 16:43:15.609 UTC
T90 8.96 s
T90_error 1.846 s
T90_start 16:43:13.049 UTC
fluence 1.35e-06 erg/cm²
fluence_error 4.34e-08 erg/cm²
flux_1024 2.66e+00 erg/cm²/s
flux_1024_error 2.62e-01 erg/cm²/s
flux_1024_time -2.56e-01 erg/cm²/s
flux_64 5.51e+00 erg/cm²/s
flux_64_error 1.29e+00 erg/cm²/s
IPN table
GRB_name GRB101008A
ra 328.8917°
decl 37.0667°
pos_error 5.00e-02°
Swift table
GRB_name GRB101008A
t_trigger 16:43:15 UTC
ra 328.8753°
decl 37.0671°
pos_error 2.59e-04°
T90 104.0 s
fluence 1.10e-06 erg/cm²
GCN 11318 table
GRB_name GRB101008A
GCN_number 11318
Detection_method Swift Det
t_trigger 16:43:15 UTC
ra 328.8910°
decl 37.0620°
Circular_text TITLE: GCN CIRCULAR NUMBER: 11318 SUBJECT: GRB 101008A: Swift detection of a burst DATE: 10/10/08 16:52:27 GMT FROM: David Palmer at LANL W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), N. Gehrels (NASA/GSFC), J. M. Gelbord (PSU), S. T. Holland (CRESST/USRA/GSFC), S. Immler (CRESST/GSFC/UMD), J. A. Kennea (PSU), N. P. M. Kuin (UCL-MSSL), C. Pagani (U Leicester), K. L. Page (U Leicester), D. M. Palmer (LANL), A. Rowlinson (U Leicester), B. Sbarufatti (INAF-OAB/IASFPA), M. H. Siegel (PSU), M. C. Stroh (PSU) and E. Troja (NASA/GSFC/ORAU) report on behalf of the Swift Team: At 16:43:15 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 101008A (trigger=435903). Swift could not slew to the burst location due to an Earth limb constraint. The BAT on-board calculated location is RA, Dec 328.891, +37.062 which is RA(J2000) = 21h 55m 34s Dec(J2000) = +37d 03' 44" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows many peaks in an overall FRED envelope structure with a duration of about 15 sec. The peak count rate was ~2500 counts/sec (15-350 keV), at ~1 sec after the trigger. Due to an observing constraint, Swift will not slew until T0+50.8 minutes. There will be no XRT or UVOT data until this time. Burst Advocate for this burst is W. H. Baumgartner (wayne AT milkyway.gsfc.nasa.gov). 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 11319 table
GRB_name GRB101008A
GCN_number 11319
Detection_method Swift-XRT Other
ra 328.8746°
decl 37.0658°
Circular_text TITLE: GCN CIRCULAR NUMBER: 11319 SUBJECT: GRB 101008A: Swift/XRT Detection of an Afterglow with no UVOT Counterpart DATE: 10/10/08 18:34:31 GMT FROM: Stephen Holland at USRA/NASA/GSFC/SSC W. H. Baumgartner (GSFC/UMBC), P. A. Evans (U Leicester), S. T. Holland (CRESST/GSFC/USRA), N. P. M. Kuin (UCL-MSSL), C. Pagani (U Leicester), K. L. Page (U Leicester), and M. H. Siegel (PSU) report on the behalf of the Swift UVOT team: The XRT began observing the field of GRB 101008A (Baumgartner et al. 2010, GCNC 11318) at 17:35:56.9 UT, 3161.7 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 328.87463, 37.06580 which is equivalent to: RA(J2000) = 21h 55m 29.91s Dec(J2000) = +37d 03' 56.9" with an uncertainty of 3.9 arcseconds (radius, 90% containment). This location is 48 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper. We cannot determine whether the source is fading at the present time. A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (1.44 x 10^21 cm^-2, Kalberla et al. 2005), with an excess column of 3 (+4.38/-2.94) x 10^21 cm^-2 (90% confidence). UVOT took a finding chart exposure of 150 seconds with the white filter starting 3167 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7' x 2.7' sub-image covers 100% of the XRT error circle. The preliminary 3-sigma upper limit in the white filter is 20.3 mag. No correction has been made for the expected Galactic extinction corresponding to a reddening of E_{B-V} = 0.19 mag. Photometry is on the UVOT photometry system of Poole et al. (2008).
GCN 11320 table
GRB_name GRB101008A
GCN_number 11320
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11320 SUBJECT: GRB 101008A: 1.23m CAHA optical observations DATE: 10/10/08 20:59:00 GMT FROM: Javier Gorosabel at IAA-CSIC J. Gorosabel (IAA-CSIC, Granada), U. Carsenty (DLR, Berlin), P. Kubanek (IAA-CSIC, Granada & U. of Valencia), G. Hahn (DLR, Berlin), report on behalf of a larger collaboration: "We have carried out R-band observations of the Swift GRB 101008A (Baumgartner et al., GCNC 11318, GCNC 11319) with the 1.23m Calar Alto telescope. The observations were carried out in R-band on October 8.7957-8.8118 UT (2.38 - 2.76 hours post trigger) under poor atmospheric conditions. We do not detect any optical source consistent with the XRT error circle (Baumgartner et al., GCNC 11319) down to a limiting magnitude of R=19.7 (3 sigma, calibrated against USNO-B1.0)".
GCN 11321 table
GRB_name GRB101008A
GCN_number 11321
Detection_method Swift-XRT Det
ra 328.8750°
decl 37.0671°
Circular_text TITLE: GCN CIRCULAR NUMBER: 11321 SUBJECT: GRB 101008A: Enhanced Swift-XRT position DATE: 10/10/08 21:32:43 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 1745 s of XRT Photon Counting mode data and 4 UVOT images for GRB 101008A, 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 = 328.87505, +37.06713 which is equivalent to: RA (J2000): 21h 55m 30.01s Dec (J2000): +37d 04' 01.7" with an uncertainty of 2.0 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 11322 table
GRB_name GRB101008A
GCN_number 11322
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 11322 SUBJECT: Subject: GRB 101008: Swift/UVOT Upper Limits DATE: 10/10/08 23:55:17 GMT FROM: Paul Kuin at MSSL N.P.M. Kuin (MSSL/UCL) and W. H. Baumgartner (GSFC/UMBC) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 101008 3167 s after the BAT trigger (Baumgartner et al., GCN Circ. 11318). No optical afterglow consistent with the XRT position (Beardmore et al., GCN Circ 11321) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Poole et al. 2008, MNRAS, 383, 627) for the first finding chart (FC) exposure and subsequent exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white_FC 3167 3316 147 >20.6 white 3167 5372 541 >21.3 v 4147 5752 363 >19.6 b 3531 5167 393 >20.6 u 3326 4962 393 >20.1 w1 4557 4757 197 >20.1 m2 4352 4552 197 >20.3 w2 3943 5577 393 >20.6 The values quoted above are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.19 in the direction of the burst (Schlegel et al. 1998).
GCN 11324 table
GRB_name GRB101008A
GCN_number 11324
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11324 SUBJECT: GRB 101008A: SAO RAS optical observations DATE: 10/10/09 01:56:35 GMT FROM: Vladimir Sokolov at SAO RAS A. S. Moskvitin, T. A. Fatkhullin, A. V. Zyazeva report on behalf of a larger collaboration: We have observed the field of the GRB 101008A (Baumgartner et al., GCN#11318, GCN#11319; Beardmore et al., GCN#11321) with the 1m telescope Zeiss-1000 of SAO RAS, Russia. The observations were carried out in Rc band on October, 8.763 -- 8.800 UT (1.581 -- 2.484 hours after the trigger). We have detected three possible candidates of the OT near the enhanced XRT error box, which are absent in the DSS R-band image. A comparison of the DSS and our images is demonstrated at ftp://ftp.sao.ru/pub/grb/GRB101008A/GRB101008A.jpeg We have measured the R magnitudes of these three objects according to R2 = 16.33 of the USNO-B1.0 star 1270-0570798: S1 R = 20.84 +/- 0.04 S2 R = 21.03 +/- 0.06 S3 R = 21.01 +/- 0.05 All the errors are formal and they do not include the errors of the USNO-B1.0 to Johnson-Cousins photometric system transformation. This message may be cited.
GCN 11325 table
GRB_name GRB101008A
GCN_number 11325
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 11325 SUBJECT: GRB 101008A: Swift-XRT refined analysis DATE: 10/10/09 08:36:00 GMT FROM: Claudio Pagani at U of Leicester C. Pagani (U. Leicester) and W. H. Baumgartner (GSFC/UMBC) report on behalf of the Swift-XRT team: We have analysed 5.5 ks of XRT data for GRB 101008A (Baumgartner et al. GCN Circ. 11318), from 3169 s to 26.9 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Beardmore et al. (GCN. Circ 11321). The light curve can be modelled with a power-law decay with a decay index of alpha=1.2 (+0.5, -0.3). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 2.0 (+/-0.5). The best-fitting absorption column is 2.8 (+2.0, -1.4) x 10^21 cm^-2, in excess of the Galactic value of 1.4 x 10^21 cm^-2 (Kalberla et al. 2005). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.5 x 10^-11 (6.8 x 10^-11) erg cm^-2 count^-1. If the light curve continues to decay with a power-law decay index of 1.2, the count rate at T+24 hours will be 1.3 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 5.9 x 10^-14 (8.9 x 10^-14) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00435903. This circular is an official product of the Swift-XRT team.
GCN 11326 table
GRB_name GRB101008A
GCN_number 11326
Detection_method GROND
Circular_text TITLE: GCN CIRCULAR NUMBER: 11326 SUBJECT: GRB101008A, GROND detection of a fading afterglow DATE: 10/10/09 10:58:06 GMT FROM: Marco Nardini at MPE M. Nardini, P. Schady, J. Greiner (MPE Garching) report on behalf of the GROND team: We observed the field of GRB 101008A (Swift trigger 435903; Baumgartner et al., GCN#11318) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2 m MPI/ESO telescope at La Silla Observatory (Chile). Observations started at 00:26 UT 2010 October 9th, 7.8h time after the GRB trigger, and lasted 2 hours. They were performed at an average seeing of 1.2 and at an average airmass of 2.5. In all our g'r'i'z'JHK images we detect the 3 objects reported by Moskvitin et al., GCN#11324. While sources S1 and S3 do not show any clear fading with respect to that reported by Moskvitin et al., GCN#11324, our preliminary photometry shows that S2 has faded with respect to the value reported by Moskvitin et al. (GCN#11324). Calibrating our images against the same USNO star as Moskvitin et al., we calculate a fading of ~0.7mag between the GROND preliminary photometry centred at 8.7h after the trigger and that reported in Moskvitin et al. We therefore conclude that this is the optical/NIR afterglow of GRB101008A. Our photometry is not corrected for foreground extinction of E(B-V)=0.19. The detection in g' band implies a redshift constraint z<3.5.
GCN 11327 table
GRB_name GRB101008A
GCN_number 11327
Detection_method Swift-BAT Det
ra 328.8820°
decl 37.0600°
Circular_text TITLE: GCN CIRCULAR NUMBER: 11327 SUBJECT: GRB 101008A: Swift-BAT refined analysis DATE: 10/10/10 02:30:51 GMT FROM: Scott Barthelmy at NASA/GSFC S. D. Barthelmy (GSFC), T. Sakamoto (GSFC/UMBC), W. H. Baumgartner (GSFC/UMBC), 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): Using the data set from T-248 to T+963 sec from recent telemetry downlinks, we report further analysis of BAT GRB 101008A (trigger #435903) (Baumgartner, et al., GCN Circ. 11318). The BAT ground-calculated position is RA, Dec = 328.882, 37.060 deg which is RA(J2000) = 21h 55m 31.8s Dec(J2000) = +37d 03' 36.4" with an uncertainty of 2.1 arcmin, (radius, sys+stat, 90% containment). The partial coding was 58%. The mask-weighted light curve shows a single FRED-like peak starting ~T-30 sec, peaking at ~T+0 sec, and returning to background at ~T+100 sec. T90 (15-350 keV) is 104 +- 35 sec (estimated error including systematics). The time-averaged spectrum from T-4.0 to T+106.6 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.59 +- 0.24. The fluence in the 15-150 keV band is 1.1 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T-0.42 sec in the 15-150 keV band is 1.6 +- 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/435903/BA/
GCN 11328 table
GRB_name GRB101008A
GCN_number 11328
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 11328 SUBJECT: GRB 101008A: MASTER prompt optical observations DATE: 10/10/10 18:46:51 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V.Krushinski, I.Zalozhnich, T.Kopytova, A. Popov Ural State University, Kourovka K.Ivanov, O.Chuvalaev, V.Poleschuk, E.Konstantinov, V.Lenok, O.Gres, S.Yazev, N.M.Budnev, Irkutsk State University E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina, D.Kuvshinov, P.Balanutsa, V.V.Chazov, P.V.Kortunov, A.Kuznetsov, D.Zimnukhov, M. Kornilov Sternberg Astronomical Institute, Moscow State University A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory V.Yurkov, Yu.Sergienko, D.Varda, I.Kudelina Blagoveschensk Educational State University, Blagoveschensk MASTER-Net robotic telescopes (MASTER-Net: http://observ.pereplet.ru) located near Ekaterinburg (Kourovka) and Tunka (Baykal Lake) was pointed to the Swift GRB 101008A (Baumgartner et al., GCN#11318, GCN#11319; Beardmore et al., GCN#11321) 53 s after trigger time (immediately after roof opening and with last night focus) and 8309s after trigger time (the Tunka delay was due to weather conditions). Time duration of the GRB 101008A is 104 +- 35 sec (Barthelmy et al., GCN#11327). So we have prompt optical limit at Kourovka site. We see marginaly possible OT (S2, Moskvitin et al.,GCN#11324; Nardini et al., GCN#11326) at Tunka observations. We have next unfiltered estimation: t_start-t_trig(s) mean time exp_time(s) m Coadd? Site -------------------------------------------------------------------------- 53 58 10 >14.5 N Kourovka 53 141 410 >16.0 Y Kourovka 8309 10260 540 19.5+-1.0 Y Tunka -------------------------------------------------------------------------- MASTER II have 2 images per exposition time. The message may be cited. mailto: lipunov@sai.msu.ru
GCN 11329 table
GRB_name GRB101008A
GCN_number 11329
Detection_method correction
Circular_text TITLE: GCN CIRCULAR NUMBER: 11329 SUBJECT: GRB 101008A: MASTER prompt optical observations (correction to GCN#11328) DATE: 10/10/10 18:59:43 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs I am sorry, the table in GCN#11328 is : t_start-t_trig(s) mean time exp_time(s) m Coadd? Site -------------------------------------------------------------------------- 53 58 10 >14.5 N Kourovka 53 141 410 >16.0 Y Kourovka 8309 10260 540 19.5+-1.0 Y Tunka -------------------------------------------------------------------------- The message may be cited. mailto: lipunov@sai.msu.ru
GCN 11330 table
GRB_name GRB101008A
GCN_number 11330
Detection_method Fermi GBM Det
t_trigger 16:43:15.610 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 11330 SUBJECT: GRB 101008A: Fermi GBM observation DATE: 10/10/11 16:29:13 GMT FROM: Lin Lin at UAH/NAOC Lin Lin (UAH) report on behalf of the Fermi GBM Team: "At 16:43:15.61 UT on 08 Oct. 2010, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 101008A (trigger 308248997 / 101008697). The burst was also detected by the SWIFT-BAT (W. H. Baumgartner et al. 2010, GCN 11318) The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight is 79 degrees. The GBM light curve shows a fast rise - slow decay peak with a duration (T90) of about 7 s (50-300 keV). The time-averaged spectrum from T0-1.536 s to T0+5.376 s is best fit by a simple power law function with index -1.42 +/- 0.03 (C-stat 1249.1 for 612 d.o.f.). The event fluence (10-1000 keV) over the above time interval is (2.016 +/- 0.083)E-6 erg/cm^2. The 0.064-sec peak photon flux measured starting from T0+1.344 s in the 10-1000 keV band is 4.90 +/- 0.84 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN 11352 table
GRB_name GRB101008A
GCN_number 11352
Detection_method Optical
ra 21.0000°
decl 37.0000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 11352 SUBJECT: GRB 101008A: optical observations DATE: 10/10/18 10:06:08 GMT FROM: Alina Volnova at SAI MSU V. Rumyantsev (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of the Swift GRB 101008A (Baumgartner et al., GCN 11318) with ZTE telescope of SAI MSU observatory on Oct. 12 (UT) 18:57 - 20:42. We clearly detect objects S1 and S3 (Moskvitin et al., GCN 11324) in coordinates (J2000) RA=21 55 29.91, Dec=+37 03 56.6 and RA=21 55 29.85, Dec=+37 04 05.0, correspondingly. We do not detect the object S2 (Moskvitin et al., GCN 11324; Nardini et al., GCN 11326). The photometry is based on the same USNO star as Moskvitin et al. Source, T0+, Filter, Exposure, mag., Upper Limit (3 sigma) (mid, d) (s) S1 4.1297 R 97x60 21.0 +/- 0.1 22.4 S2 4.1297 R 97x60 21.6 +/- 0.2 22.4 Since we do not detect the afterglow candidate S2 up to R=22.4 we can confirm the GRB 101008A afterglow detection. The finding chart can be found at http://grb.rssi.ru/GRB101008A/GRB101008a_101012_ZTE.gif
GCN 11353 table
GRB_name GRB101008A
GCN_number 11353
Detection_method correction
Circular_text TITLE: GCN CIRCULAR NUMBER: 11353 SUBJECT: GRB 101008A: correction to the GCN 11352 DATE: 10/10/18 12:31:09 GMT FROM: Alina Volnova at SAI MSU V. Rumyantsev (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We do not detect the object S2 (Moskvitin et al., GCN 11324; Nardini et al., GCN 11326). And the table should be read as Source, T0+, Filter, Exposure, mag., Upper Limit (3 sigma) (mid, d) (s) S1 4.1297 R 97x60 21.0 +/- 0.1 22.4 S3 4.1297 R 97x60 21.6 +/- 0.2 We apologize for possible inconvenience