GRB080701A

This page lists all entries on GRB080701A in GRBweb

Summary IPN Swift GCN 7910 GCN 7911 GCN 7913 GCN 7914 GCN 7915 GCN 7916 GCN 7917 GCN 7918 GCN 7919 GCN 7928

Summary table
Variable Value Source
T0 10:13:37 UTC GCN_circulars,Swift Det
ra 45.8386° Swift
decl 75.4748° Swift
pos_error 2.20e-04° Swift
T90 18.0 s Swift
T90_start 10:13:37 UTC Swift
fluence 7.10e-07 erg/cm² Swift
T100 18.0 s
GBM_located False
mjd 54648.42612268519 GCN_circulars,Swift Det
IPN table
GRB_name GRB080701A
ra 45.8375°
decl 75.4833°
pos_error 5.00e-02°
Swift table
GRB_name GRB080701A
t_trigger 10:13:37 UTC
ra 45.8386°
decl 75.4748°
pos_error 2.20e-04°
T90 18.0 s
fluence 7.10e-07 erg/cm²
GCN 7910 table
GRB_name GRB080701A
GCN_number 7910
Detection_method Swift Det
t_trigger 10:13:37 UTC
ra 45.8370°
decl 75.4920°
Circular_text TITLE: GCN CIRCULAR NUMBER: 7910 SUBJECT: GRB 080701: Swift detection of a burst DATE: 08/07/01 10:37:05 GMT FROM: David Palmer at LANL M. C. Stroh (PSU), A. P. Beardmore (U Leicester), D. N. Burrows (PSU), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), C. Guidorzi (INAF-OAB), E. A. Hoversten (PSU), C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL), D. Perez (U Leicester), P. Romano (INAF-IASFPA), T. Sakamoto (NASA/UMBC), R. L. C. Starling (U Leicester), T. N. Ukwatta (GSFC/GWU), L. Vetere (PSU) and H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team: At 10:13:37 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080701 (trigger=315615). Swift did not immediately slew due to an Earth limb constraint. The BAT on-board calculated location is RA, Dec 45.837, +75.492 which is RA(J2000) = 03h 03m 21s Dec(J2000) = +75d 29' 30" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a smooth peak structure with a duration of ~15 sec. The peak count rate was ~2500 counts/sec (15-350 keV), at ~1 sec after the trigger. Swift was unable to slew to the source due to due to Earth limb constraints. X-ray telescope and UV/optical telescope observations of this region will become possible at T+50 minutes. Burst Advocate for this burst is M. C. Stroh (stroh AT astroh.org). 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 7911 table
GRB_name GRB080701A
GCN_number 7911
Detection_method Swift-XRT Other
ra 45.8394°
decl 75.4754°
Circular_text TITLE: GCN CIRCULAR NUMBER: 7911 SUBJECT: GRB 080701: Swift-XRT Prompt Analysis DATE: 08/07/01 12:16:48 GMT FROM: Michael Stroh at PSU/Swift M.C. Stroh, C. Pagani (PSU) and P. Evans (U. Leicester) report on behalf of the Swift-XRT team. The XRT began observing the field at 11:00:14.4 UT, 2796.8 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 45.83937, 75.47535 which is equivalent to: RA(J2000) = 03h 03m 21.45s Dec(J2000) = +75d 28' 31.3" with an uncertainty of 3.1 arcseconds (radius, 90% containment). This location is 59 arcseconds from the BAT onboard position, within the BAT error circle. A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (1.78e+21 cm-2, Kalberla et al. 2005), with an excess column of 6.3 (+3.88/-3.07) x 10^21 cm-2 (90% confidence). This is an official product of the Swift-XRT team.
GCN 7913 table
GRB_name GRB080701A
GCN_number 7913
Detection_method Swift-BAT Det
ra 45.9440°
decl 75.4810°
Circular_text TITLE: GCN CIRCULAR NUMBER: 7913 SUBJECT: GRB 080701A, Swift-BAT refined analysis DATE: 08/07/01 13:30:11 GMT FROM: Scott Barthelmy at NASA/GSFC E. Fenimore (LANL), S. D. Barthelmy (GSFC), W. Baumgartner (GSFC/UMBC), J. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), K. McLean (GSFC/UMD), D. Palmer (LANL), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (GSFC/ORAU), M. C. Stroh (PSU), J. Tueller (GSFC), T. Ukwatta (GWU) (i.e. the Swift-BAT team): Using the data set from T-120 to T+285 sec from the recent telemetry downlink, we report further analysis of BAT GRB 080701A (trigger #315615) (Stroh, et al., GCN Circ. 7910). The BAT ground-calculated position is RA, Dec = 45.944, 75.481 deg which is RA(J2000) = 03h 03m 46.5s Dec(J2000) = +75d 28' 50.7" with an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 55%. The mask-weighted light curve shows a single FRED-like peak starting at ~T-2 sec, peaking at ~T+0 sec, and ending at ~T+20 sec. T90 (15-350 keV) is 18 +- 9 sec (estimated error including systematics). The time-averaged spectrum from T-2.7 to T+24.6 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.24 +- 0.17. The fluence in the 15-150 keV band is 7.1 +- 0.7 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T-0.08 sec in the 15-150 keV band is 2.2 +- 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/315615/BA/
GCN 7914 table
GRB_name GRB080701A
GCN_number 7914
Detection_method Swift-XRT Det
ra 45.8388°
decl 75.4748°
Circular_text TITLE: GCN CIRCULAR NUMBER: 7914 SUBJECT: GRB 080701: Enhanced Swift-XRT position DATE: 08/07/01 21:01:51 GMT FROM: Phil Evans at U of Leicester P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team. Using 699 s of overlapping XRT Photon Counting mode and UVOT data for GRB 080701, 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 = 45.83882, +75.47479 which is equivalent to: RA (J2000): 03h 03m 21.32s Dec (J2000): +75d 28' 29.3" with an uncertainty of 1.7 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 http://www.swift.ac.uk/xrt_positions/Goad.pdf), the current algorithm is an extension of this method. This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN 7915 table
GRB_name GRB080701A
GCN_number 7915
Detection_method Other
ra 45.7313°
decl 75.4783°
Circular_text TITLE: GCN CIRCULAR NUMBER: 7915 SUBJECT: GRB 080701A: Early Super-LOTIS Observations DATE: 08/07/01 21:05:17 GMT FROM: Peter A. Milne at Super-LOTIS P.A. Milne (U Arizona) reports on behalf of the Super-LOTIS team: The robotic 0.6m Super-LOTIS telescope began R-band observations of the error region of GRB 080701A at 10:14:25 UT, 49 seconds after the trigger. Initial 10 and 20 second exposures reveal no sources other than those present in the relevant DSS image. A stack of 30x60sec images reveals no source at the location of the XRT source (Stroh et al., GCN 7911), down to a 3-sigma limiting magnitude of R~19.5. Comparisons of initial and final images reveals no brightening or fading sources. We used the USNO-B star at RA=03:02:55.5, Dec=+75:28:42 to derive the R2 magnitude upper-limit. This message can be cited.
GCN 7916 table
GRB_name GRB080701A
GCN_number 7916
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 7916 SUBJECT: GRB 080701A: Swift/UVOT Upper Limits DATE: 08/07/01 22:11:42 GMT FROM: Frank Marshall at GSFC F.E. Marshall (NASA/GSFC) and M.C. Stroh (PSU) report on behalf of the Swift/UVOT team: The Swift/UVOT observed the field of GRB 080701A starting 2983 s after the BAT trigger (Stroh et al., GCN Circ. 7910). We do not find a source in any of the UVOT observations inside the enhanced XRT error circle (Evans et al., GCN Circ. 7914). The 3-sigma upper limits for detecting a source in the first finding chart (FC) exposure and co-added frames are: Filter T_start(s) T_stop(s) Exp(s) Mag (3-sigma UL) white (FC) 2983 3082 98 >19.7 white 2983 9403 736 >21.0 v 3914 4113 197 >19.1 b 3298 4934 393 >20.2 u 3093 4728 393 >19.9 uvw1 4324 4523 197 >20.0 uvm2 4119 4318 197 >19.6 uvw2 3709 3908 197 >20.2 The values quoted above are not corrected for the expected Galactic extinction corresponding to a reddening of E(B-V) = 0.54 mag in the direction of the burst (Schlegel et al. 1998).
GCN 7917 table
GRB_name GRB080701A
GCN_number 7917
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 7917 SUBJECT: TLS I-Band Observation of GRB 080701A DATE: 08/07/01 22:28:54 GMT FROM: Andrea Rossi at TLS Tautenburg Rossi, A. (TLS Tautenburg), Gonsalves, E. (U. Dartmouth), Schulze, S. (TLS Tautenburg), Klose, S. (TLS Tautenburg), Filgas, R. (TLS Tautenburg), and Ludwig, F. (TLS Tautenburg) report on behalf of a larger collaboration: We observed the X-ray error circle of the Swift GRB 080701A (Evans, P. A. et al., GCN 7914; Stroh, M. C. et al., GCN 7910) with the TLS 1.34m Schmidt telescope under good observing conditions (seeing is about 1-2 arcsec and very good visibility). We obtained in total 10 x 150 sec images starting at 21:02 UT and 5 x 300 sec images starting at 21:40 UT in the I band. We did not find any new source in the stacked image down to the 3-sigma limiting magnitude of 21.7 mag calibrated on USNO-B1 field. This message can be cited.
GCN 7918 table
GRB_name GRB080701A
GCN_number 7918
Detection_method Optical
ra 45.8396°
decl 75.4710°
Circular_text TITLE: GCN CIRCULAR NUMBER: 7918 SUBJECT: GRB 080701A, VATT optical upper limit DATE: 08/07/01 22:43:48 GMT FROM: Peter Garnavich at U of Notre Dame C. Peters (Goshen College) and P. Garnavich (Notre Dame) report: We observed the field of GRB 080701A with the Vatican Advanced Technology Telescope (VATT) beginning July 1.46 (UT) or 45 minutes after the bursts (Stroh et al. GCN 7910). Four exposures totaling 190 sec in the R-band were obtained. The combined image was calibrated assuming the brightness of the USNO-B1 star at RA=3:03:21.50 DEC=75:28:15.48 is R=16.52. No source is detected down to R=22.0 at the improved XRT position (Evans et al. GCN 7914).
GCN 7919 table
GRB_name GRB080701A
GCN_number 7919
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 7919 SUBJECT: GRB 080701: Swift-XRT refined analysis DATE: 08/07/02 00:12:31 GMT FROM: Michael Stroh at PSU/Swift M.C. Stroh (PSU) reports on behalf of the Swift-XRT team. We have analyzed the first four orbits of Swift-XRT data obtained for GRB 080701 (Stroh et al., GCN Circ. 7910), totaling 2.4ks of Photon Counting data. The UVOT-enhanced XRT position has been given by Evans et al. in GCN Circ 7914. The X-ray light-curve can be fit by a power-law with a decay index of 1.04 +/- 0.27. Assuming a constant decay rate, we predict counting rates at T+24 and T+48 hours of 4.55e-3 and 2.21e-3 cts/s respectively. The spectrum can be fit with a power-law in excess of the Galactic value (1.78e21 cm-2, Kalberla et al. 2005), with an excess column of 9.21 (+6.43/-4.78)e21 cm^-2 and a photon index of 2.93 (+0.79/-0.59). The observed (unabsorbed) 0.3-10 keV flux is 3.55e-12 (1.976e-11) ergs/ cm^2/s. This is an official product of the Swift-XRT team.
GCN 7928 table
GRB_name GRB080701A
GCN_number 7928
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 7928 SUBJECT: GRB 080701A: Early RAPTOR optical limits DATE: 08/07/02 23:24:50 GMT FROM: James Wren at LANL J. Wren, W.T. Vestrand, P.R. Wozniak, H. Davis, B. Norman of Los Alamos National Laboratory report: The RAPTOR telescope system responded to Swift trigger 315615 (Stroh et al., GCN 7910) under good observing conditions. Our narrow-field instruments began observing the location at 10:14:06.47 UTC, 28.8 s after the Swift trigger. We detect no counterpart at the improved XRT position (Evans et al., GCN 7914). The limiting magnitudes of our unfiltered observations when calibrated to the USNO-B1 R-band are given in the following table. The GRB location was also within the field of view of our continuous all-sky monitoring system. We can place 3 sigma limits at or below magnitude 9.4 during the time period within 2 minutes both before and after the trigger. t-mid(s) exp(s) mag mag-err -------------------------------------------- -11.68 10.0 9.7 3 sigma limit 11.57 10.0 10.0 3 sigma limit 34.80 10.0 9.9 3 sigma limit 71.45 45.0 19.3 3 sigma limit 173.93 100.0 19.8 3 sigma limit 300.65 100.0 19.9 3 sigma limit 561.10 270.0 20.5 3 sigma limit