GRB080207A

This page lists all entries on GRB080207A in GRBweb

Summary IPN Swift GCN 7264 GCN 7265 GCN 7266 GCN 7267 GCN 7268 GCN 7269 GCN 7270 GCN 7272 GCN 7273 GCN 7276 GCN 7277 GCN 7279 GCN 7291 GCN 7293 GCN 7333

Summary table
Variable Value Source
T0 21:30:21 UTC GCN_circulars,Swift Det
ra 207.5122° Swift
decl 7.5022° Swift
pos_error 1.81e-04° Swift
T90 340.0 s Swift
T90_start 21:30:21 UTC Swift
fluence 6.10e-06 erg/cm² Swift
redshift 2.0858
T100 340.0 s
GBM_located False
mjd 54503.89607638889 GCN_circulars,Swift Det
IPN table
GRB_name GRB080207A
ra 207.5125°
decl 7.5167°
pos_error 5.00e-02°
redshift 2.0858
Swift table
GRB_name GRB080207A
t_trigger 21:30:21 UTC
ra 207.5122°
decl 7.5022°
pos_error 1.81e-04°
T90 340.0 s
fluence 6.10e-06 erg/cm²
redshift 2.0858
GCN 7264 table
GRB_name GRB080207A
GCN_number 7264
Detection_method Swift Det
t_trigger 21:30:21 UTC
ra 207.5130°
decl 7.5140°
Circular_text TITLE: GCN CIRCULAR NUMBER: 7264 SUBJECT: GRB 080207: Swift detection of a burst DATE: 08/02/07 21:48:14 GMT FROM: Scott Barthelmy at NASA/GSFC J. L. Racusin (PSU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), P. J. Brown (PSU), D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), P. A. Evans (U Leicester), S. D. Hunsberger (PSU), J. A. Kennea (PSU), C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester), D. M. Palmer (LANL), T. Sakamoto (NASA/UMBC), R. L. C. Starling (U Leicester), M. C. Stroh (PSU) and T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team: At 21:30:21 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080207 (trigger=302728). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 207.513, +7.514 which is RA(J2000) = 13h 50m 03s Dec(J2000) = +07d 30' 50" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). This was an image-trigger, so the TDRSS lightcurve show little activity. The XRT began observing the field at 21:32:25 UT, 124 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 207.5117, +7.5018 which is RA(J2000) = 13h 50m 02.8s Dec(J2000) = 07d 30' 06.4" with an uncertainty of 4.7 arcseconds (radius, 90% containment). This location is 44 arcseconds from the BAT on-board position, within the BAT error circle. The initial flux in the 2.5s image was 8.2e-09 erg/cm2/s (0.2-10 keV). UVOT took a finding chart exposure of 55 seconds with the White (160-650 nm) filter starting 140 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. The 3 sigma upper limit at the XRT position is white > 20. No correction has been made for the expected extinction corresponding to E(B-V) of 0.02. Burst Advocate for this burst is J. L. Racusin (racusin AT astro.psu.edu). 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 7265 table
GRB_name GRB080207A
GCN_number 7265
Detection_method Swift-XRT Det
ra 207.5125°
decl 7.5024°
Circular_text TITLE: GCN CIRCULAR NUMBER: 7265 SUBJECT: GRB 080207: Enhanced Swift-XRT position DATE: 08/02/08 03:05:36 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 199 s of overlapping XRT Photon Counting mode and UVOT V-band data for GRB 080207, 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 = 207.51253, +7.50245 which is equivalent to: RA (J2000): 13h 50m 3.01s Dec (J2000): +07d 30' 08.8" with an uncertainty of 2.9 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, astro-ph/0708.0986 http://www.swift.ac.uk/xrt_positions/Goad.pdf). This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN 7266 table
GRB_name GRB080207A
GCN_number 7266
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 7266 SUBJECT: GRB 080207: Swift-XRT Refined Analysis DATE: 08/02/08 06:02:57 GMT FROM: Judith Racusin at PSU J. L. Racusin (PSU) reports on behalf of the Swift-XRT Team: We have analysed the first 4 orbits of Swift-XRT data obtained for GRB 080207 (Racusin et al. GCN Circ. 7264), totaling 64 s of Windowed Timing (WT) data and 5.7 ks of Photon Counting (PC) data. The enhanced XRT position is given in Beardmore et al. (GCN 7265). The X-ray light-curve can be fit by a broken power-law with an initial bright short flat phase with a a break at 205 +/- 73 sec followed by a power-law with a decay slope of 1.5 +/- 0.1. The WT data (133-197 seconds) can be modeled as an absorbed power-law with photon index of 1.1 +/- 0.1 and a total absorbing column of NH = (85 +/- 10)e20 cm^-2. The PC data (4.7-17.1 ks) can be modeled as an absorbed power-law with photon index of 2.4 +/- 0.2 and a total absorbing column of NH = (75 +/- 17)e20 cm^-2. Both fits are in excess of the Galactic value of 1.95e20 cm^-2. The 0.3-10 keV observed (unabsorbed) flux during this time is 5.80e-9 (5.81e-9) erg cm^-2 s^-1 and 1.15e-11 (1.16e-11) erg cm^-2 s^-1 for WT and PC, respectively. Assuming the source continues to decay with the same decay index of 1.5, we predict an XRT count rate of 7.6e-3 counts/s at T+24 hours, which corresponds to an 0.3-10.0 keV observed flux of 6.6e-13 ergs cm^-2 s^-1. This circular is an official product of the Swift-XRT team.
GCN 7267 table
GRB_name GRB080207A
GCN_number 7267
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 7267 SUBJECT: GRB 080207: TAROT Calern observatory optical observations DATE: 08/02/08 06:36:15 GMT FROM: Alain Klotz at CESR-CNRS Klotz, A. (CESR-OMP), Boer M. (OHP), Atteia J.L. (LATT-OMP) report: We imaged the field of GRB 080207 detected by SWIFT (trigger 302728) with the TAROT robotic telescope (D=25cm) located at the Calern observatory, France. Although the notice was received 100s after the trigger, the observations started 1075s later because the field was not risen at Calern during the burst. First images are two low in elevation. Stars become detectable on images ~1500s after the trigger. Weather conditions were excellents. The date of trigger : t0 = 2008-02-07T21:30:21 No afterglow was found at position delivered by Beardmore et al. (GCNC 7265): t0+1563s to t0+1653s : R > 14.3 (elevation 2.5) t0+1670s to t0+1760s : R > 14.9 (elevation 2.8) t0+3388s to t0+3568s : R > 16.2 (elevation 8) t0+3388s to t0+7526s : R > 19.0 (elevation 20) Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction. This message may be cited.
GCN 7268 table
GRB_name GRB080207A
GCN_number 7268
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 7268 SUBJECT: GRB080207: Swift/UVOT refined analysis DATE: 08/02/08 07:18:30 GMT FROM: Antonino Cucchiara at PSU A. Cucchiara (PSU), J. Racusin (PSU) report on behalf of the Swift-UVOT team: The Swift/UVOT observed the field of GRB080207 (trigger #302728) starting 55 sec days after the BAT detection (Racusin et al. 2008, GCN Circ. 7264). We do not find any new source in any of the UVOT coadded observations inside the XRT enhanced error circle (Beardmore et al. 2008, GCN Circ. 7265). The 3-sigma upper limits (in the UVOT photometric system, Breeveld et al., GCN Circ. 6614) are listed. Filter Tstart Tstop Exp Upper limit (s) (s) (s) white 55 11428 1167 22.40 v 4733 13063 1097 20.50 b 5553 16909 983 21.53 u 5347 6982 393 20.57 uvw1 5143 6777 393 20.75 uvm2 4937 6572 393 20.58 uvw2 5963 12334 1082 21.62 The values quoted above are not corrected for the expected Galactic extinction corresponding to a reddening of E_{B-V} = 0.02 mag in the direction of the burst (Schlegel et al. 1998).
GCN 7269 table
GRB_name GRB080207A
GCN_number 7269
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 7269 SUBJECT: GRB 080207: REM NIR observations DATE: 08/02/08 09:19:43 GMT FROM: Paolo D'Avanzo at INAF-OAB P. D'Avanzo, L.A. Antonelli, S. Covino, D. Fugazza, L. Calzoletti, S. Campana, G. Chincarini, M.L. Conciatore, S. Cutini, V. D'Elia, F. Dalessio, F. Fiore, P. Goldoni, D. Guetta, C. Guidorzi, G.L. Israel, N. Masetti, A. Melandri, E. Meurs, L. Nicastro, E. Palazzi, E. Pian, S. Piranomonte, L. Stella, G. Stratta, G. Tagliaferri, G. Tosti, V.Testa, S.D. Vergani, F. Vitali report on behalf of the REM team: The robotic 60-cm REM telescope located at La Silla (Chile) observed automatically the field of the GRB 080207 (Racusin et al., GCN 7264). A preliminary analysis of the first set of JHK exposures does not reveal any optical afterglow candidate inside the XRT error box (Beardmore et al., GCN 7265) We derive the following 3sigma upper limits (calibrated against the 2MASS catalog): J > 16.7 (7.8 hours after the burst) H > 15.9 (7.7 hours after the burst) K > 13.9 (10.1 hours after the burst)
GCN 7270 table
GRB_name GRB080207A
GCN_number 7270
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 7270 SUBJECT: GRB080207: RTT150 Optical Observations DATE: 08/02/08 12:21:20 GMT FROM: Irek Khamitov at TUG I. Khamitov (TUG), O. Kose, K.Yakut (Ege Uni.), Z. Eker (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.) I. Bikmaev, N. Sakhibullin (KSU/AST) R. Burenin, M. Pavlinsky, R. Sunyaev (IKI), report: We have observed field of the GRB080207 (trigger=302728, GCN Circ. 7264) with Russian-Turkish 1.5-m telescope (RTT150, Bakirlitepe, TUBITAK National Observatory, Turkey) 07 Feb between 22:04UT and 22:27UT, i.e. starting about 34 min after the burst, using ANDOR CCD. Series of 20*30sec direct images in Rc band were taken. We found no afterglow candidate inside of XRT error circle. Using USNO-B1 stars we estimated limiting magnitude of the co-added frame as R~21.8 mag. The finding chart can be found at: http://hea.iki.rssi.ru/grb/080207/indexeng.html -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.
GCN 7272 table
GRB_name GRB080207A
GCN_number 7272
Detection_method Swift-BAT Det
ra 207.5140°
decl 7.4920°
Circular_text TITLE: GCN CIRCULAR NUMBER: 7272 SUBJECT: GRB 080207, Swift-BAT refined analysis DATE: 08/02/08 15:19:29 GMT FROM: Scott Barthelmy at NASA/GSFC M. Stamatikos (GSFC/ORAU), S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), J. L. Racusin (PSU), T. Sakamoto (GSFC/UMBC), G. Sato (GSFC/ISAS), J. Tueller (GSFC), T. Ukwatta (GWU) (i.e. the Swift-BAT team): Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 080207 (trigger #302728) (Racusin, et al., GCN Circ. 7264). The BAT ground-calculated position is RA, Dec = 207.514, 7.492 deg which is RA(J2000) = 13h 50m 3.3s Dec(J2000) = 7d 29' 32" with an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%. The mask-weighted light curve shows a long smooth rise starting at ~T-20 sec, peaking around T+100 sec, then dropping to a minimum around T+200 sec, then rising again out to T+320 sec at which point the location went out of the BAT FOV when the spacecraft slewed to a new target. T90 (15-350 keV) is >300 sec (estimated error including systematics). The time-averaged spectrum from T+4.7 to T+332.9 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 1.17 +- 0.27, and Epeak of 107.8 +- 72.5 keV (chi squared 51.31 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 6.1 +- 0.2 x 10^-06 erg/cm2 and the 1-sec peak flux measured from T+330.34 sec in the 15-150 keV band is 1.0 +- 0.3 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.58 +- 0.06 (chi squared 57.73 for 57 d.o.f.). All the quoted errors are at the 90% confidence level. The BAT characteristics of this burst, particularly the long smooth lightcurve, suggest that it might be at high redshift, but the high absorption of the XRT spectrum (Racusin et al. GCN 7266) make it unlikely. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/302728/BA/
GCN 7273 table
GRB_name GRB080207A
GCN_number 7273
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 7273 SUBJECT: GRB 080207: Super-LOTIS observations DATE: 08/02/08 15:28:43 GMT FROM: Adria C. Updike at Clemson U A. C. Updike (Clemson University), P. A. Milne (U Arizona), G. G. Williams (MMTO), and D. H. Hartmann (CU) report on behalf of the Super-LOTIS team: The 0.6m Super-LOTIS telescope began observations of the field of GRB 080207 (Racusin et al., GCN 7264) approximately 13 hours and 16 min after the trigger. Observations consisted of 58x60 second exposures in the R band, under decent weather conditions. No afterglow was detected within the XRT refined error circle (Beardmore et al., GCN 7265) down to a limiting magnitude of 20.8 (as derived from USNO B1.0 R2 magnitudes upon comparison to field stars). This message may be cited.
GCN 7276 table
GRB_name GRB080207A
GCN_number 7276
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 7276 SUBJECT: GRB 080207: Optical limits from Gemini-South DATE: 08/02/08 22:42:28 GMT FROM: Antonino Cucchiara at PSU A. Cucchiara and D. B. Fox (PSU) reports on behalf of a larger collaboration: "We have imaged the field of GRB 080207 (Racusin et al., GCN 7264) with the Gemini South + GMOS in griz bandds starting at 0.41 days after the trigger. We took a sequence of 5x 180s images in each band (total exposure 900s). Our co-added images do not reveal any source inside the XRT refined error circle (Beardmore et al., GCN 7265). Using three objects from the SDSS catalog to establish photometric zero-points, we calculate the following 2-sigma upper limits on the emission of any optical afterglow + host galaxy: g > 24.1 mag, r > 24.5 mag, i > 24.2 mag, z > 25.0 mag."
GCN 7277 table
GRB_name GRB080207A
GCN_number 7277
Detection_method Swift-BAT Det
ra 207.5140°
decl 7.4920°
Circular_text TITLE: GCN CIRCULAR NUMBER: 7277 SUBJECT: GRB 080207, Swift-BAT refined analysis DATE: 08/02/09 00:55:04 GMT FROM: Jay R. Cummings at NASA/GSFC/Swift M. Stamatikos (GSFC/ORAU), S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), J. L. Racusin (PSU), T. Sakamoto (GSFC/UMBC), G. Sato (GSFC/ISAS), J. Tueller (GSFC), T. Ukwatta (GWU) (i.e. the Swift-BAT team): Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 080207 (trigger #302728) (Racusin, et al., GCN Circ. 7264). The BAT ground-calculated position is RA, Dec = 207.514, 7.492 deg which is RA(J2000) = 13h 50m 3.3s Dec(J2000) = 7d 29' 32" with an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%. The mask-weighted light curve shows a long smooth rise starting at ~T-20 sec, peaking around T+100 sec, then dropping to a minimum around T+200 sec, then rising again out to ~T+340 sec at which point the location went out of the BAT FOV when the spacecraft slewed to a new target. Based on the raw counting rates, which are somewhat sensitive to photons through the side of the instrument, there was not significant emission above about 50 keV after this time. T90 (15-350 keV) is 340 +- 20 sec (estimated error including systematics). The time-averaged spectrum from T+4.7 to T+332.9 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 1.17 +- 0.27, and Epeak of 107.8 +- 72.5 keV (chi squared 51.31 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 6.1 +- 0.2 x 10^-06 erg/cm2 and the 1-sec peak flux measured from T+330.34 sec in the 15-150 keV band is 1.0 +- 0.3 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.58 +- 0.06 (chi squared 57.73 for 57 d.o.f.). All the quoted errors are at the 90% confidence level. The BAT characteristics of this burst, particularly the long smooth lightcurve, suggest that it might be at high redshift, but the high absorption of the XRT spectrum (Racusin et al. GCN 7266) make it unlikely. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/302728/BA/
GCN 7279 table
GRB_name GRB080207A
GCN_number 7279
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 7279 SUBJECT: GRB 080207: GROND upper limits DATE: 08/02/09 22:48:33 GMT FROM: Jochen Greiner at MPI A. Kuepcue Yoldas, A. Yoldas, J. Greiner, T. Kruehler (all MPE Garching), S. Klose (Tautenburg Obs), G. Szokoly (Budapest Univ.) report for the GROND team: We observed the field of GRB 080207 detected by Swift/BAT (Racusin et al. 2008, GCN 7264) simultaneously in grizJHK with GROND (Greiner et al. 2008, astro-ph/0801.4801), mounted at the 2.2m MPI/ESO telescope at La Silla (Chile). Observations started on Feb. 08, at 06:35 UT, about 9 hrs after the GRB, under poor conditions (particularly high humidity and airmass of 1.7-1.34). No source is detected within the 3-sigma XRT error circle (Beardmore et al. 2008, GCN 7265). Comparison of the co-added images (with 3440 sec effective exposure time in griz and 2400 seconds in JHK) to the Digital Sky Survey and 2MASS yields the following 3-sigma upper limits: g' > 23.9, r' > 23.8, i' > 23.5, z' > 22.8, J > 21.0, H > 19.7, K > 19.0.
GCN 7291 table
GRB_name GRB080207A
GCN_number 7291
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 7291 SUBJECT: GRB 080207: optical observations. DATE: 08/02/11 16:43:59 GMT FROM: Javier Gorosabel at IAA-CSIC V. Muoz Marn, J. Sabater, A.J. Castro-Tirado, J. Gorosabel, M. Jelnek (IAA-CSIC), A. de Ugarte Postigo (ESO, Santiago), report: "We carried out BVRI-band observations of the GRB 080207 XRT enhanced position of (Beardmore et al., GCN 7265) with the 2.5m NOT(+MOSCA) at Roque de los Muchachos observatory. A preliminary analysis reveals no optical source in the XRT error circle brighter than R~23.5 at Feb 8.26389-8.27778 UT (8.83 - 9.16 hours after the GRB)."
GCN 7293 table
GRB_name GRB080207A
GCN_number 7293
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 7293 SUBJECT: GRB 080207: VLT NIR early upper limits DATE: 08/02/12 09:53:52 GMT FROM: Paolo D'Avanzo at INAF-OAB D. Fugazza (INAF-OAB), V. D'Elia (INAF-OAR), P. D'Avanzo, S. Covino and G. Tagliaferri (INAF-OAB) report, on behalf of the MISTICI collaboration: We observed the field of GRB 080207 (Racusin et al., GCN 7264) with the Very Large Telescope equipped with the SINFONI near infrared camera in imaging mode. Observations have been carried out on Feb 08.3673, i.e. about 11.3 hours after the burst and about 2 hours after the REM (D'Avanzo et al., GCN 7269) and GROND (Kuepcue Yoldas et al. GCN 7279) NIR observations. We do not detect any afterglow candidate inside the XRT error box (Beardmore et al., GCN 7265). We derive the following 3sigma upper limits (calibrated against standard stars taken the same night): J > 23.5 H > 22.8 K > 21.5 We acknowledge support from the ESO staff.
GCN 7333 table
GRB_name GRB080207A
GCN_number 7333
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 7333 SUBJECT: GRB080207: optical observations DATE: 08/02/26 17:13:18 GMT FROM: Alexei Pozanenko at IKI, Moscow M. Andreev (Terskol Branch of Institute of Astronomy) V. Petkov, A. Kurenya (BNO INR RAS), A. Pozanenko (IKI) on behalf of larger GRB follow up collaboration report: We observed the GRB080207 (Racusin et al. GCN 7264) with Zeiss-600 of Mt.Terskol observatory on Feb.07-08. Two series in R-filter were completed. We do not detect new sources within XRT error circle (Beardmore et al. GCN 7265). The limiting magnitudes against USNO-B1.0 are following: UT, Exposure, R_mag (mid time) Feb.7.958 20 x 60s >20.3 Feb.8.102 40 x 90s >21.0 The message may be cited.