GRB171102B

This page lists all entries on GRB171102B in GRBweb

Summary IPN Swift GCN 22082 GCN 22084 GCN 22085 GCN 22086 GCN 22087 GCN 22088 GCN 22089 GCN 22090 GCN 22092 GCN 22093

Summary table
Variable Value Source
T0 15:20:29 UTC GCN_circulars,Swift Det
ra 288.0778° Swift
decl 22.4443° Swift
pos_error 1.94e-04° Swift
T90 17.8 s Swift
T90_start 15:20:29 UTC Swift
fluence 9.30e-07 erg/cm² Swift
T100 17.8 s
GBM_located False
mjd 58059.63922453704 GCN_circulars,Swift Det
IPN table
GRB_name GRB171102B
ra 288.1042°
decl 22.4333°
pos_error 5.00e-02°
Swift table
GRB_name GRB171102B
t_trigger 15:20:29 UTC
ra 288.0778°
decl 22.4443°
pos_error 1.94e-04°
T90 17.8 s
fluence 9.30e-07 erg/cm²
GCN 22082 table
GRB_name GRB171102B
GCN_number 22082
Detection_method Swift Det
t_trigger 15:20:29 UTC
ra 288.1030°
decl 22.4380°
Circular_text TITLE: GCN CIRCULAR NUMBER: 22082 SUBJECT: GRB 171102B: Swift detection of a burst DATE: 17/11/02 15:37:07 GMT FROM: David Burrows at PSU/Swift T. N. Ukwatta (LANL), D. N. Burrows (PSU), A. D'Ai (INAF-IASFPA), V. D'Elia (ASDC), Alex Deich (PSU), J.D. Gropp (PSU), J. A. Kennea (PSU), H. A. Krimm (NSF/USRA), S. J. LaPorte (PSU), F. E. Marshall (NASA/GSFC), K. L. Page (U Leicester) and M. H. Siegel (PSU) report on behalf of the Swift Team: At 15:20:29 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 171102B (trigger=785510). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 288.103, +22.438 which is RA(J2000) = 19h 12m 25s Dec(J2000) = +22d 26' 16" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a multi-peaked structure with a duration of about 20 sec. The peak count rate was ~1500 counts/sec (15-350 keV), at ~4 sec after the trigger. The XRT began observing the field at 15:22:33.3 UT, 123.8 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 288.07776, 22.44512 which is equivalent to: RA(J2000) = 19h 12m 18.66s Dec(J2000) = +22d 26' 42.4" with an uncertainty of 3.7 arcseconds (radius, 90% containment). This location is 87 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 consistent with the Galactic value of 4.51 x 10^21 cm^-2 (Willingale et al. 2013). UVOT took a finding chart exposure of 250 seconds with the U filter starting 124 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers none of the XRT error circle. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18.0 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.75. Burst Advocate for this burst is T. N. Ukwatta (tilan.ukwatta AT gmail.com). 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 22084 table
GRB_name GRB171102B
GCN_number 22084
Detection_method Swift-XRT Det
ra 288.0779°
decl 22.4443°
Circular_text TITLE: GCN CIRCULAR NUMBER: 22084 SUBJECT: GRB 171102B: Enhanced Swift-XRT position DATE: 17/11/02 19:08:46 GMT FROM: Phil Evans at U of Leicester J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team. Using 1915 s of XRT Photon Counting mode data and 5 UVOT images for GRB 171102B, 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 = 288.07787, +22.44433 which is equivalent to: RA (J2000): 19h 12m 18.69s Dec (J2000): +22d 26' 39.6" with an uncertainty of 1.8 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 22085 table
GRB_name GRB171102B
GCN_number 22085
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 22085 SUBJECT: GRB 171102B: Swift-XRT refined Analysis DATE: 17/11/03 00:06:36 GMT FROM: Phil Evans at U of Leicester S.L. Gibson (U. Leicester), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), A. Melandri (INAF-OAB), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), B. Sbarufatti (INAF-OAB/PSU), D.N. Burrows (PSU), A. Tohuvavohu (PSU) and T.N. Ukwatta report on behalf of the Swift-XRT team: We have analysed 10 ks of XRT data for GRB 171102B (Ukwatta et al. GCN Circ. 22082), from 110 s to 24.1 ks after the BAT trigger. The data comprise 7 s in Windowed Timing (WT) mode (taken while Swift was slewing), with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Osborne et al. (GCN Circ. 22084). The light curve can be modelled with an initial power-law decay with an index of alpha=0.58 (+0.08, -0.11), followed by a break at T+5902 s to an alpha of 1.32 (+0.43, -0.17). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.17 (+0.17, -0.16). The best-fitting absorption column is 5.8 (+1.7, -1.3) x 10^21 cm^-2, consistent with the Galactic value of 4.5 x 10^21 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 6.9 x 10^-11 (8.1 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 5.8 (+1.7, -1.3) x 10^21 cm^-2 Galactic foreground: 4.5 x 10^21 cm^-2 Excess significance: <1.6 sigma Photon index: 1.17 (+0.17, -0.16) If the light curve continues to decay with a power-law decay index of 1.32, the count rate at T+24 hours will be 4.1 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 2.8 x 10^-13 (3.3 x 10^-13) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00785510. This circular is an official product of the Swift-XRT team.
GCN 22086 table
GRB_name GRB171102B
GCN_number 22086
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 22086 SUBJECT: GRB 171102B: Swift/UVOT Upper Limits DATE: 17/11/03 05:32:40 GMT FROM: Sam LaPorte at PSU GRB 171102B: Swift/UVOT Upper Limits S. J. LaPorte (PSU) and T. N. Ukwatta (LANL) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 171102B 125 s after the BAT trigger (Ukwatta et al., GCN Circ. 22082). No optical afterglow consistent with the XRT position (Osborne et al. GCN Circ. 22084) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white_FC 4979 5129 147 >20.2 u_FC 125 375 246 >19.8 white 4979 5749 344 >20.5 v 432 11930 1160 >19.3 b 381 18368 1057 >20.5 u 125 24106 2391 >21.5 w1 481 23421 2042 >20.7 m2 456 22515 1843 >21.3 w2 407 11017 1179 >20.7 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.75 in the direction of the burst (Schlegel et al. 1998).
GCN 22087 table
GRB_name GRB171102B
GCN_number 22087
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 22087 SUBJECT: GRB 171102B: MITSuME Akeno optical upper limits DATE: 17/11/03 12:12:39 GMT FROM: Katsuhiro L. Murata at Nagoya U S. Harita, R. Itoh, K. L. Muarata, Y. Tachibana, T. Yoshii, K. Morita, T. Ozawa, H. Mamiya, K. Shiraishi, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We searched for the optical counterpart of GRB171102B (T. N. Ukwatta et al., GCN Circular #22082) with the optical three color (g', Rc, and Ic) CCD cameras attached to the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan. The observation started on 2017-11-03 09:05:03.04 UT . We did not find any new point source within XRT circle in all three bands. We obtained following limits for the magnitudes. T0+[hour] MID-UT T-EXP[sec] g' Rc Ic ------------------------------------------------------------------------------------------------------- ~17.742 09:24:59 300 >18.2 >17.5 >16.9 ------------------------------------------------------------------------------------------------------- T0+ : Elapsed time after the burst T-EXP: Total Exposure time We used GSC2.3 catalog for flux calibration.
GCN 22088 table
GRB_name GRB171102B
GCN_number 22088
Detection_method Swift-BAT Det
ra 288.0960°
decl 22.4340°
Circular_text TITLE: GCN CIRCULAR NUMBER: 22088 SUBJECT: GRB 171102B: Swift-BAT refined analysis DATE: 17/11/03 13:03:02 GMT FROM: Amy Lien at GSFC C. B. Markwardt (GSFC), S. D. Barthelmy (GSFC), J. R. Cummings (CPI), H. A. Krimm (NSF/USRA), A. Y. Lien (GSFC/UMBC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), T. N. Ukwatta (LANL) (i.e. the Swift-BAT team): Using the data set from T-240 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 171102B (trigger #785510) (Ukwatta et al., GCN Circ. 22082). The BAT ground-calculated position is RA, Dec = 288.096, 22.434 deg which is RA(J2000) = 19h 12m 23.0s Dec(J2000) = +22d 26' 03.2" with an uncertainty of 2.1 arcmin, (radius, sys+stat, 90% containment). The partial coding was 22%. The mask-weighted light curve shows a weak pulse that starts at ~ T-6 s and ends at ~ T+14 s. T90 (15-350 keV) is 17.8 +- 3.1 sec (estimated error including systematics). The time-averaged spectrum from T-6.18 to T+13.72 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.16 +- 0.24. The fluence in the 15-150 keV band is 9.3 +- 1.4 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+3.51 sec in the 15-150 keV band is 1.2 +- 0.4 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/785510/BA/
GCN 22089 table
GRB_name GRB171102B
GCN_number 22089
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 22089 SUBJECT: GRB 171102B: RATIR Optical and NIR Observations DATE: 17/11/03 15:04:13 GMT FROM: Nat Butler at Az State U Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Ori Fox (STScI), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UVI), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), Jesús González (UNAM), Carlos Román-Zúñiga (UNAM), Harvey Moseley (GSFC), John Capone (UMD), V. Zach Golkhou (U. Wash.), and Vicki Toy (UMD) report: We observed the field of GRB 171102B (Ukwatta, et al., GCN 22082) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astronómico Nacional on Sierra San Pedro Mártir from 2017/11 3.14 to 2017/11 3.20 UTC (11.99 to 13.55 hours after the BAT trigger), obtaining a total of 0.98 hours exposure in the r and i bands and 0.42 hours exposure in the Z, Y, J, and H bands. For a source within the Swift-XRT error circle (Osborne, et al., GCN 22084), in comparison with the USNO-B1 and 2MASS catalogs, we obtain the following upper limits (3-sigma): r > 22.51 i > 22.59 Z > 21.14 Y > 21.53 J > 21.36 H > 20.97 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB.
GCN 22090 table
GRB_name GRB171102B
GCN_number 22090
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 22090 SUBJECT: GRB 171102B: Nanshan 0.36m and 0.60m optical upper limits DATE: 17/11/03 15:49:14 GMT FROM: Dong Xu at NAOC/CAS H.J. Tan (CCU), Z.P. Zhu, H.X. Feng, D. Xu (NAOC), Y.D. Hu (IAA-CSIC), X. Gao (Urumqi No.1 Senior High School) report: We observed the field of GRB 171102B (Ukwatta et al., GCN 22082) using the 0.36m and 0.60m telescopes located at Nanshan, Xinjiang, China. All imaged were taken without filter. Our photometry was summarized as follows: ======================================== Tmid(s)+T0 Telescope Exptime(s) UL(R) 389 36cm 40*3 >16.10 645 60cm 30*3 >17.80 1365 60cm 60*15 >18.55 ======================================== Note: (1) Photometry is calibrated with stars (R2 magnitude) in the USNO B1 catalogue, although images were taken without filter.
GCN 22092 table
GRB_name GRB171102B
GCN_number 22092
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 22092 SUBJECT: GRB 171102B: TShAO optical upper limit DATE: 17/11/03 20:49:21 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Kusakin (Fesenkov Astrophysical Institute), A. Pozanenko (IKI), I. Reva (Fesenkov Astrophysical Institute), A. Volnova (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of the Swift GRB 170822A (Ukwatta et al., GCN 22082) with Zeiss-1000 1-m telescope of Tien Shan Astronomical Observatory starting on Nov., 02 (UT) 15:47:45. We took several images in R-filter. Within enhanced XRT error circle (Osborne et al., GCN 22084) we do not detect any object. Preliminary photometry of the afterglow is following. Date UT start t-T0 Filter Exp. OT Err. UL (mid, days) (s) (3 sigma) 2017-11-02 15:47:45 0.04377 R 30*120 n/d n/d 20.1 Photometry is based on nearby USNO-B1.0 stars R2 magnitudes USNO-B.1_id R2 1124-0422739 16.70 1124-0422527 16.20 1124-0422440 15.76
GCN 22093 table
GRB_name GRB171102B
GCN_number 22093
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 22093 SUBJECT: GRB 171102B: AbAO optical upper limit DATE: 17/11/03 20:51:02 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), R. Inasaridze (AbAO), A. Pozanenko (IKI), A. Volnova (IKI), V. Ayvazian (AbAO), O. Kvaratskhelia (AbAO), G. Inasaridze (AbAO), I. Molotov (KIAM) report on behalf of larger GRB follow-up collaboration: We observed the field of the Swift GRB 170822A (Ukwatta et al., GCN 22082) with AS-32 (0.7m) telescope of Abastumani Observatory starting on Nov., 02 (UT) 15:53:26. We obtained several unfiltered images of the field. Within enhanced XRT error circle (Osborne et al., GCN 22084) we do not detect any object. Preliminary photometry of the field is following Date UT start t-T0 Filter Exp. OT Err UpLim (3 sigma) (mid, days) (s) 2017-11-02 15:53:26 0.05497 CR 53*60 n/d n/d 21.7 Photometry is based on nearby USNO-B1.0 stars R2 magnitudes USNO-B.1_id R2 1124-0422571 18.10 1124-0422577 17.52 1124-0422572 18.34 1124-0422730 17.80 A finding chart can be found at http://grb.rssi.ru/GRB171102B/GRB171102B_AAO_171102.png