GRB111022A

This page lists all entries on GRB111022A in GRBweb

Summary IPN Swift GCN 12471 GCN 12473 GCN 12474 GCN 12476 GCN 12482 GCN 12483 GCN 12487 GCN 12490

Summary table
Variable Value Source
T0 16:07:04 UTC GCN_circulars,Swift Det
ra 275.8710° Swift
decl -23.6660° Swift
pos_error 7.77e-03° Swift
T90 24.7 s Swift
T90_start 16:07:04 UTC Swift
fluence 2.00e-06 erg/cm² Swift
T100 24.7 s
GBM_located False
mjd 55856.67157407408 GCN_circulars,Swift Det
IPN table
GRB_name GRB111022A
ra 275.8708°
decl -23.6667°
pos_error 5.00e-02°
Swift table
GRB_name GRB111022A
t_trigger 16:07:04 UTC
ra 275.8710°
decl -23.6660°
pos_error 7.77e-03°
T90 24.7 s
fluence 2.00e-06 erg/cm²
GCN 12471 table
GRB_name GRB111022A
GCN_number 12471
Detection_method Swift Det
t_trigger 16:07:04 UTC
ra 275.8720°
decl -23.6680°
Circular_text TITLE: GCN CIRCULAR NUMBER: 12471 SUBJECT: GRB 111022A: Swift detection of a burst DATE: 11/10/22 16:23:02 GMT FROM: Jamie A. Kennea at PSU/Swift-XRT S. Immler (CRESST/GSFC/UMD), M. M. Chester (PSU), V. D'Elia (ASDC), N. Gehrels (NASA/GSFC), C. Guidorzi (U Ferrara), S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU), C. B. Markwardt (NASA/GSFC), K. L. Page (U Leicester), E. Sonbas (GSFC/USRA/Adiyaman Univ.), E. Troja (NASA/GSFC/ORAU) and T. N. Ukwatta (MSU) report on behalf of the Swift Team: At 16:07:04 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 111022A (trigger=506070). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 275.872, -23.668 which is RA(J2000) = 18h 23m 29s Dec(J2000) = -23d 40' 03" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single peak structure with a duration of about 15 sec. The peak count rate was ~3000 counts/sec (15-350 keV), at ~1 sec after the trigger. The XRT began observing the field at 16:08:21.1 UT, 76.1 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 275.8642, -23.6724 which is equivalent to: RA(J2000) = 18h 23m 27.40s Dec(J2000) = -23d 40' 20.6" with an uncertainty of 6.3 arcseconds (radius, 90% containment). This location is 27 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. Swift entered the SAA shortly after detecting this burst, so there are no prompt UVOT data products for this burst at this time. Burst Advocate for this burst is S. Immler (immler 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 12473 table
GRB_name GRB111022A
GCN_number 12473
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 12473 SUBJECT: GRB 111022A: MASTER-Net early limit DATE: 11/10/22 17:51:33 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, V.V.Chazov, P.V.Kortunov, A.Kuznetsov, D.Zimnukhov, M. Kornilov, A.Sankovich Sternberg Astronomical Institute, Moscow State University A. Tlatov, A.V. Parhomenko, D. Dormidontov, V. Senik Kislovodsk Solar Station of the Pulkovo Observatory V.Yurkov, Yu.Sergienko, D.Varda, I.Kudelina, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk V.Krushinski, I.Zalozhnich, T.Kopytova, A. Popov Ural State University, Kourovka K.Ivanov, S.Yazev, N.M.Budnev, E.Konstantinov, V.Lenok, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Kislovodsk was pointed to the GRB111022A 29 sec after notice time and 47 sec after GRB time at 2011-10-22 16:07:52 UT. On our first (10s exposure) set we haven't found optical transient within SWIFT error-box. The 5-sigma upper limit has been about 16.6 mag. The object was observed on high (80 deg) zenit distance. The message may be cited.
GCN 12474 table
GRB_name GRB111022A
GCN_number 12474
Detection_method correction
Circular_text TITLE: GCN CIRCULAR NUMBER: 12474 SUBJECT: GRB 111022A: Preliminary UVOT TDRSS Non-Detection DATE: 11/10/22 17:54:31 GMT FROM: Stephen Holland at USRA/NASA/GSFC/SSC S. T. Holland (CRESST/USRA/GSFC), and S. Immler (CRESST/USRA/GSFC) report on behalf of the Swift/UVOT team: GRB 111022A: Swift/UVOT Non-Detection UVOT took a finding chart exposure of 150 seconds with the white filter starting 815 seconds after the BAT trigger. This field is very crowded, but 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 estimated 3-sigma upper limit is white > 20.0 mag. No correction has been made for the expected Galactic extinction corresponding to a reddening of E_{B-V} = 0.66 mag. Due to the low Galactic latitude of this burst the extinction is highly uncertain.
GCN 12476 table
GRB_name GRB111022A
GCN_number 12476
Detection_method Swift-BAT Det
ra 275.8710°
decl -23.6660°
Circular_text TITLE: GCN CIRCULAR NUMBER: 12476 SUBJECT: GRB 111022A: Swift-BAT refined analysis DATE: 11/10/22 20:01:20 GMT FROM: Scott Barthelmy at NASA/GSFC H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), S. Immler (CRESST/GSFC/UMD), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team): Using the data set from T-60 to T+243 sec from recent telemetry downlinks, we report further analysis of BAT GRB 111022A (trigger #506070) (Immler, et al., GCN Circ. 12471). The BAT ground-calculated position is RA, Dec = 275.871, -23.666 deg, which is RA(J2000) = 18h 23m 29.1s Dec(J2000) = -23d 39' 58.7" with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 66%. The mask-weighted light curve shows two peaks: a small peak starting at ~T-18 sec, peaking at ~T-12 sec, merging into the main peak at ~T-8 sec, peaking at ~T-2 sec, and ending at ~T+15 sec. T90 (15-350 keV) is 24.7 +- 3.6 sec (estimated error including systematics). The time-averaged spectrum from T-17.69 to T+18.57 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 1.01 +- 0.37, and Epeak of 64.7 +- 13.9 keV (chi squared 63.3 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 2.0 +- 0.1 x 10^-6 erg/cm2 and the 1-sec peak flux measured from T-1.46 sec in the 15-150 keV band is 2.5 +- 0.2 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.73 +- 0.08 (chi squared 76.5 for 57 d.o.f.). 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/506070/BA/
GCN 12482 table
GRB_name GRB111022A
GCN_number 12482
Detection_method Swift-XRT Other
ra 275.8648°
decl -23.6732°
Circular_text TITLE: GCN CIRCULAR NUMBER: 12482 SUBJECT: GRB 111022A: Swift-XRT refined Analysis DATE: 11/10/23 14:15:22 GMT FROM: Giulia Stratta at ASDC G. Stratta (ASDC), V. D'Elia (ASDC) and S. Immler (CRESST/GSFC/UMD) report on behalf of the Swift-XRT team: We have analysed 1.1 ks of XRT data for GRB 111022A (Immler et al. GCN Circ. 12471), from 775 s to 1.9 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The refined XRT position is RA, Dec = 275.86481, -23.67325 which is equivalent to: RA (J2000): 18 23 27.55 Dec(J2000): -23 40 23.7 with an uncertainty of 3.6 arcsec (radius, 90% confidence). The light curve is consistent with a constant source of mean count rate 1.1e-01 ct/sec. A power-law fit gives an index of 0.2 (+0.6, -0.7). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 2.3 (+0.6, -0.5). The best-fitting absorption column is 6.8 (+4.0, -2.7) x 10^21 cm^-2, in excess of the Galactic value of 2.2 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 4.4 x 10^-11 (1.0 x 10^-10) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 6.8 (+4.0, -2.7) x 10^21 cm^-2 Galactic foreground: 2.2 x 10^21 cm^-2 Excess significance: 2.8 sigma Photon index: 2.3 (+0.6, -0.5) The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00506070. This circular is an official product of the Swift-XRT team.
GCN 12483 table
GRB_name GRB111022A
GCN_number 12483
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 12483 SUBJECT: GRB 111022A: RIzY Observation DATE: 11/10/23 15:01:33 GMT FROM: Myungshin Im at Seoul Nat U Myungshin Im (CEOU/Seoul National Univ), and Yuji Urata (NCU) on behalf of EAFON We observed GRB 111022A (Holland et al., GCN 12472) in R,I,z, and Y filters with a 1.0-m telescope at Mt. Lemmon, Arizona. The observation started at 10-23-07:52:02 UT, or about 14.5 hrs after the BAT alert, with total integraion of 10 min in each filter. No credible afterglow candidate was found at the enhanced XRT position (Beardmore et al. GCN 12478). We thank the LOAO operator, J. Youn for his assistance with the observation.
GCN 12487 table
GRB_name GRB111022A
GCN_number 12487
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 12487 SUBJECT: GRB 111022A: Swift/UVOT Upper Limits DATE: 11/10/23 21:15:38 GMT FROM: Paul Kuin at MSSL N. P. M. Kuin (MSSL-UCL) and S. Immler (CRESST/GSFC/UMD) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 111022A 815 s after the BAT trigger (Immler et al., GCN Circ. 12471). No optical afterglow consistent with the XRT position (Stratta et al, GCN Circ. 12482) is detected in the initial UVOT exposures. The field is very crowded and the detection limits may be affected in the white filter by the coincidence loss pattern from a neighboring star. 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 815 965 147 >21.3 white 815 1287 186 >21.5 v 972 1859 117 >18.7 b 1071 1957 117 >19.9 u 1046 1932 114 >18.9 w1 1021 1908 117 >19.5 m2 996 1883 117 >21.0 w2 1120 1833 97 >19.0 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.66 in the direction of the burst (Schlegel et al. 1998).
GCN 12490 table
GRB_name GRB111022A
GCN_number 12490
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 12490 SUBJECT: GRB 111022A: MITSuME Akeno Optical upper limits DATE: 11/10/24 12:25:42 GMT FROM: Yoichi Yatsu at Tokyo Tech. K. Tokoyoda, Y. Yatsu, Y. Aoki, R. Usui, K. Kawakami, M. Hayashi, S. Song, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We observed GRB 111022A (S. Immler et al, GCN12471) with the optical three color (g, Rc, and Ic) CCD camera attached to the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan. The observation started on 2011-10-23 9:16:56 UT (~16.8 h after the burst). We did not find any new point source within the Swift XRT error circle (G. Stratta et al, GCN12482) in three bands. Photometric results and are listed below. We used GSC2.3 catalog for flux calibration. T0+[day] MID-UT T-EXP[sec] g' Rc Ic --------------------------------------------------------------------------------- 0.71519 9:47:22 3060 >18.4 >16.5 >16.5 --------------------------------------------------------------------------------- T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]