GRB111222A

This page lists all entries on GRB111222A in GRBweb

Summary Fermi GBM IPN GCN 12714 GCN 12715 GCN 12716 GCN 12717 GCN 12718 GCN 12719 GCN 12732 GCN 12805 GCN 12806 GCN 12807 GCN 13001

Summary table
Variable Value Source
GRB_name_Fermi GRB111222619
T0 14:51:55 UTC GCN_circulars,IPN Triangulation
ra 189.7708° IPN
decl 65.8333° IPN
pos_error 2.00e+00° IPN
T90 0.288 s Fermi_GBM
T90_error 0.036 s Fermi_GBM
T90_start 14:51:55.007 UTC Fermi_GBM
fluence 4.42e-06 erg/cm² Fermi_GBM
fluence_error 1.91e-08 erg/cm² Fermi_GBM
T100 0.295 s
GBM_located False
mjd 55917.61938657407 GCN_circulars,IPN Triangulation
Fermi GBM table
GRB_name_Fermi GRB111222619
trigger_name bn111222619
ra 179.1929°
decl 69.0361°
pos_error 3.64e+00°
datum 2011-12-22
t_trigger 14:51:55.023 UTC
T90 0.288 s
T90_error 0.036 s
T90_start 14:51:55.007 UTC
fluence 4.42e-06 erg/cm²
fluence_error 1.91e-08 erg/cm²
flux_1024 1.42e+01 erg/cm²/s
flux_1024_error 5.00e-01 erg/cm²/s
flux_1024_time -1.28e-01 erg/cm²/s
flux_64 6.23e+01 erg/cm²/s
flux_64_error 3.54e+00 erg/cm²/s
IPN table
GRB_name GRB111222A
ra 189.7708°
decl 65.8333°
pos_error 2.00e+00°
GCN 12714 table
GRB_name GRB111222A
GCN_number 12714
Detection_method IPN Triangulation
t_trigger 14:51:55 UTC
ra 179.1930°
decl 69.0360°
Circular_text TITLE: GCN CIRCULAR NUMBER: 12714 SUBJECT: IPN Triangulation of GRB 111222A (short/hard/intense) DATE: 11/12/23 16:27:26 GMT FROM: Valentin Pal'shin at Ioffe Inst K. Hurley, on behalf of the Mars Odyssey and MESSENGER GRB teams, I. G. Mitrofanov, D. Golovin, M. L. Litvak, and A. B. Sanin, on behalf of the HEND-Odyssey GRB team, J. Goldsten, on behalf of the MESSENGER NS GRB team, S. Golenetskii, R. Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo, and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, V. Connaughton, M. Briggs, and C. Meegan, on behalf of the Fermi GBM team, and S. Barthelmy, J. Cummings, N. Gehrels, H. Krimm, and D. Palmer, on behalf of the Swift-BAT team, report: The short-duration, hard, intense GRB 111222A has been observed by Fermi (GBM), Konus-Wind, INTEGRAL (SPI-ACS), MESSENGER (GRNS), Mars Odyssey (HEND), and Swift (BAT) (outside the coded field of view) so far, at about 53515 s UT (14:51:55). We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 179.193 (11h 56m 46s) +69.036 (+69d 02' 10") Corners: 179.439 (11h 57m 45s) +68.877 (+68d 52' 37") 179.815 (11h 59m 16s) +69.133 (+69d 07' 59") 178.942 (11h 55m 46s) +69.195 (+69d 11' 41") 178.575 (11h 54m 18s) +68.936 (+68d 56' 11") --------------------------------------------- The error box area is 317 sq. arcmin, and its maximum dimension is 29 arcmin. This box can be improved. The time history and spectrum will be given in a forthcoming GCN Circular. A Swift ToO observation has been requested.
GCN 12715 table
GRB_name GRB111222A
GCN_number 12715
Detection_method Konus-Wind Det
t_trigger 14:51:55.918 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 12715 SUBJECT: Konus-Wind observation of GRB 111222A DATE: 11/12/23 18:25:13 GMT FROM: Dmitry Frederiks at Ioffe Institute S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, report: The short hard intense GRB 111222A (localized by IPN: Hurley et al., GCN 12714) triggered Konus-Wind at T0=53515.918s UT (14:51:55.918) The light curve consists of a single multi-peaked pulse with a total duration of ~300 ms. The emission is seen up to ~3 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB111222_T53515/ As observed by Konus-Wind the burst had a fluence of (7.2 0.7)x10-6 erg/cm2, and a 16-ms peak flux, measured from T0 s, of (5.1 0.7)x10-5 erg/cm2/s (both in the 20 keV - 3 MeV energy range). The spectrum of the burst (measured from T0 to T0+0.256 s) is best fitted in the 20 keV - 3 MeV range by a power law with exponential cutoff model, for which alpha = -0.35 (-0.13, +0.14), and Ep = 762(-89, +101) keV, chi2 = 51.1/45 dof. All the quoted results are preliminary. All the quoted errors are at the 90% confidence level.
GCN 12716 table
GRB_name GRB111222A
GCN_number 12716
Detection_method Swift-XRT Other
ra 179.2198°
decl 69.0712°
Circular_text TITLE: GCN CIRCULAR NUMBER: 12716 SUBJECT: GRB 111222A: Swift-XRT observations DATE: 11/12/23 21:24:29 GMT FROM: Dirk Grupe at PSU/Swift-XRT D. Grupe (PSU) reports on behalf of the Swift-XRT team: We have analyzed 2.3 ks of XRT data for the IPN-detected burst: GRB 111222A (Hurley et al. et al. GCN Circ. 12714), from 92.9 ks to 95.2 ks after the IPN trigger. The data are entirely in Photon Counting (PC) mode. An X-ray source is detected within the IPN error circle. Using 1964 s of PC mode data and 1 UVOT images, we find an enhanced XRT position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 179.21977, +69.07116 which is equivalent to: RA (J2000): 11h 56m 52.74s Dec(J2000): +69d 04' 16.2" with an uncertainty of 3.1 arcsec (radius, 90% confidence). This position is 322 arcsec from the IPN position. We cannot determine at the present time whether the source is fading. A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.5 (+4.9, -4.3). The best-fitting absorption column is consistent with the Galactic value of 1.7 x 10^20 cm^-2 (Kalberla et al. 2005). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 6.8 x 10^-11 (7.0 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 0 (+2.1, -0) x 10^22 cm^-2 Galactic foreground: 1.7 x 10^20 cm^-2 Excess significance: <1.6 sigma Photon index: 1.5 (+4.9, -4.3) The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00020194. This circular is an official product of the Swift-XRT team.
GCN 12717 table
GRB_name GRB111222A
GCN_number 12717
Detection_method Swift-UVOT Det
ra 179.2201°
decl 69.0709°
Circular_text TITLE: GCN CIRCULAR NUMBER: 12717 SUBJECT: GRB 111222A: Swift/UVOT Observations DATE: 11/12/24 06:29:06 GMT FROM: Mike Siegel at PSU/Swift MOC M. H. Siegel and D. Grupe (PSU) report on behalf of the Swift/UVOT team: We have analyzed 2.3 ks of UVOT data for the IPN-detected burst: GRB 111222A (Hurley et al. et al. GCN Circ. 12714), from 92.9 ks to 95.2 ks after the IPN trigger. The data are entirely in the white filter. We detect a faint optical source consistent with the XRT source reported in Grupe (GCN Circ. 12716) at a position of RA, Dec = 179.22008, Dec = 69.07096 , which is equivalent to: RA (J2000): 11h 56m 52.82s Dec(J2000): +69d 04' 15.4" with an uncertainty of 0.51 arcsec (radius, 90% confidence). Preliminary photometry using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) shows a white magnitude of 19.34+-0.03. The magnitude is not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.01 in the direction of the burst (Schlegel et al. 1998). We note, however, that a source is present at this position in the DSS. Follow-up observations will be needed to determine if the X-ray/optical source is indeed the GRB afterglow.
GCN 12718 table
GRB_name GRB111222A
GCN_number 12718
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 12718 SUBJECT: GRB 111222A: Xinglong TNT observation DATE: 11/12/25 01:52:57 GMT FROM: L.P. Xin at NAOC L.P. Xin, J.Y. Wei, Y. L. Qiu, J. Wang, J.S. Deng, C. Wu, X. H. Han, Dong.Xu on behalf of EAFON report: We began to observe GRB 111222A ( Hurley et al., GCN 12714) with Xinglong TNT telescope at Dec 24th, 18:23:18.453 (UT), about 2.15d after the burst. 15 R-band images were obtained. The exposure time is 300 sec for each frame. The source reported by Siegel et al. (GCN 12717) was detected in the each R band image. The brightness of this source was estimated to be about 17.6 mag and without any significant change during our observations time relatively to the reference object in USNO B1.0 R2 mag. The Coordinates of the reference object and its brightness are 11:56:39.863 +69:03:55.50 J2000 R2=16.86 mag, respectively. The brightness of the reported source ( Siegel et al. GCN 12717 ) we observed is brighter than the magnitude reported by USNO B1.0 R2mag which was R2=18.06 mag. This message may be cited. More observations are encouraged. Thanks for the observation assistant of TNT telescope at Xinglong observatory.
GCN 12719 table
GRB_name GRB111222A
GCN_number 12719
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 12719 SUBJECT: GRB111222A: GMG optical observation DATE: 11/12/25 02:09:23 GMT FROM: Dong Xu at Weizmann Inst D. Xu (WIS/NAOC), X.-H. Zhao, J.-M. Bai (YNAO), J.-R. Mao (KASI/YNAO) report: We observed the field of GRB 111222A (Hurley et al., GCN 12714; Grupe et al., GCN 12716; Siegel et al., GCN 12717) with the 2.4m GMG telescope equipped with YFOSC. Observations started at 17:34 UT on 2011-12-24 (i.e., 50.717 hrs after the burst) in a seeing of ~3.2", and 3x600s SDSS r-band and 3x600s SDSS z-band images were obtained. As noted in GCN 12717, there was a SDSS star present at the UVOT position which has the following mags: u=22.34+/-0.30 g=19.47+/-0.01 r=18.08+/-0.01 i=16.66+/-0.01 z=15.85+/-0.01. The star had r=18.08+/-0.01 mag and z=15.83+/-0.02 mag in our stacked images (calibrated with nearby SDSS stars), being consistent with the SDSS r- and z-band archival mags. We thank the GMG staff, especially J.-J. Zhang for performing these observations.
GCN 12732 table
GRB_name GRB111222A
GCN_number 12732
Detection_method Suzaku WAM Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 12732 SUBJECT: GRB 111222A : Suzaku WAM observation of the prompt emission DATE: 11/12/26 06:09:28 GMT FROM: Norisuke Ohmori at Miyazaki U N. Ohmori, M. Akiyama, M. Yamauchi (Univ. of Miyazaki), M. Ohno, Y. Hanabata, T. Uehara, T. Kawano, K. Takaki, M. Mizuno, Y. Fukazawa (Hiroshima U.), K. Yamaoka (Aoyama Gakuin U.), W. Iwakiri, M. Tashiro, Y. Terada, T. Yasuda, K. Takahara, M. Asahina, S. Kobayashi, A. Sakamoto (Saitama U.), S. Sugita (Nagoya U.), M. Kokubun, T. Takahashi (ISAS/JAXA), Y. E. Nakagawa (Waseda U.), C-J. Chuang, Y. Urata, P. Tsai (NCU), K. Nakazawa, K. Makishima (Univ. of Tokyo), The short hard intense GRB111222A (localized by IPN: Hurley et al., GCN 12714) was detected by the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy range of 50 keV - 5 MeV at 14:51:55 UT (=T0). The observed light curve shows a double-peaked structure starting at T0 s, ending at T0+2 s with a duration (T90) of about 1 seconds. The fluence in 100 - 1000 keV was 3.98 (-1.21, +0.74) x 10^-6 erg/cm^2. The 1-s peak flux measured from T0 s was 4.70 (-1.18, +1.00) photons/cm^2/s in the same energy range. Preliminary result shows that the time-averaged spectrum from T0 to T0+2 s is well fitted by a power-law with exponential cutoff model: dN/dE ~ E^{-alpha} * exp(-(2-alpha)*E/Epeak) with alpha : -0.28 (-0.49, +0.43), and Epeak : 629 (-50, +61) keV (chi^2/d.o.f. = 94.8/98). All the quoted errors are at statistical 90% confidence level. The light curves for this burst are available at: http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/untrig/grb_table.html
GCN 12805 table
GRB_name GRB111222A
GCN_number 12805
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 12805 SUBJECT: GRB 111222A: Second Swift observation DATE: 12/01/04 17:34:01 GMT FROM: Dirk Grupe at PSU/Swift-XRT D. Grupe (PSU) and M. Siegel (PSU) report on behalf of the Swift team: Swift re-observed the field of the IPN burst GRB 111222A (Hurley et al., GCN circ. 12714) on 2011-12-31 for 5 ks. We do not detect the X-ray source reported by Grupe (GCN circ. 12716) in a 2.5 ks observation 27 hours after the burst anymore. The 3-sigma upper limit at the position of the afterglow is 2.2e-3 counts/s in the Swift XRT. We conclude that the X-ray source has faded and is the afterglow of GRB 111222A. Swift/UVOT observed the burst for 4.9 ks, with all data taken in the white filter. We confirm the previously reported optical source noted in Siegel and Grupe (GCN Circ. 12717) that was also present in the DSS images. We find that the source has faded significantly since the initial observation from a white magnitude of 19.34+-0.03 to 19.89+-0.03. This implies that the previous observation recorded light from both the host galaxy and the optical afterglow of the burst. Further observations of the host galaxy are strongly encouraged. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00020194. This circular is an official product of the Swift team.
GCN 12806 table
GRB_name GRB111222A
GCN_number 12806
Detection_method Fermi GBM Det
t_trigger 14:51:55.020 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 12806 SUBJECT: GRB 111222A: Fermi GBM observations DATE: 12/01/05 07:54:09 GMT FROM: Arne Rau at MPE Arne Rau (MPE) and Charles Meegan (USRA) report on behalf of the Fermi GBM Team: "At 14:51:55.02 UT on 22 December 2011, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 111222A (trigger 346258317 / 111222619). The burst was was also detected by the 3rd Interplanetary Network (Hurley et al. 2011, GCN 12714) and The GBM on-ground location is consistent with the IPN position. The angle from the Fermi LAT boresight is 136 degrees. Moreover, this burst was bright enough to result in a Fermi spacecraft autonomous rapid repoint (ARR) maneuver. The GBM light curve shows a single pulse with a duration (T90) of about 0.32 s (50-300 keV). The time-averaged spectrum from T0-0.064 s to T0+0.320 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.38 +/- 0.06 and the cutoff energy, parameterized as Epeak, is 725 +/- 45 keV. The event fluence (10-1000 keV) in this time interval is (1.502 +/- 0.034)E-05 erg/cm^2. The 64-msec peak photon flux measured starting from T0+0.0 s in the 10-1000 keV band is 60.2 +/- 3.4 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN 12807 table
GRB_name GRB111222A
GCN_number 12807
Detection_method Other
ra 179.2201°
decl 69.0709°
Circular_text TITLE: GCN CIRCULAR NUMBER: 12807 SUBJECT: GRB 111222A, the review of the sky area in plate archives DATE: 12/01/05 11:24:18 GMT FROM: Valentyna Golovnya at Main Astro Obs,Kyiv V.V. Golovnya (Main Astro Obs, Kyiv) report: We have undertaken the review of the sky area in vicinity of GRB 111222A (M. H. Siegel and D. Grupe, GCN Circ.12717) on astronegatives, collected in Ukrainian NAS Main astronomical observatory plate archive (1976-1996). All the plates with the possible object appearance are digitized using Microtek ScanMaker 9800XL TMA and Epson Expression 10000XL flatbed scanners and have been placed into Golosiiv Plate Archive database DBGPA with open access to them. The list of plates is given in the table: YYYYMMDD/TimeUT --Plates-- Exp. LimMag Star USNOA2 19850424/193653 GUA040C000630 16.0 15.35 1575-03212355 19860301/224314 GUA040C000837A 18.0 16.35 1575-03212664 19860409/202551 GUA040C000846 16.0 15.75 1575-03212662 Plates: the plates archive identifier of DWA (D/F=400/2000, GUA040C M=103"/mm) of the Ukrainian NAS Main Astro obs. (Marsden's number - 83) the plate number [1]. Exp. - Duration of the maximum exposure (minutes). LimMag - Limited V mag, derived in the 20 minutes area around the location given in GCN Circ.12717: RA (J2000): 11h 56m 52.82s,Dec(J2000): +69d 04' 15.4" Star USNOA2 - Comparison star. The preview images of 3 areas together with the 20x20 min.of arc area from SkyMap can be found in http://gua.db.ukr-vo.org/img/grb/111222A/index.html The images with full resolution are available via e-mail on demand. References: 1.L.Pakuliak DATABASE of GOLOSIIV PLATE ARCHIVE (DBGPA V2.0), http://gua.db.ukr-vo.org
GCN 13001 table
GRB_name GRB111222A
GCN_number 13001
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 13001 SUBJECT: GRB 111222A: Swift observation on 2012 February 06/07 DATE: 12/03/02 18:08:01 GMT FROM: Dirk Grupe at PSU/Swift-XRT D. Grupe and M. Siegel (PSU) report on behalf of the Swift team: Swift re-observed the field of the IPN burst GRB 111222A (Hurley et al., GCN circ. 12714) on 2012-02-06/07 for 5.1 ks. We do not detect the X-ray source reported by Grupe (GCN circ. 12716) in a 2.5 ks observation 27 hours after the burst. The 3-sigma upper limit at the position of the afterglow is 1.4e-3 counts/s in the Swift XRT. This observation confirms our findings from a 5 ks Swift observation obtained on 2011-12-31 (Grupe & Siegel, GCN circ. 12805) that the source has faded. We therefore conclude that the X-ray source reported by Grupe (GCN circ. 12716) is the afterglow of GRB 111222A. UVOT observations show that the source reported in Grupe & Siegel (GCN circ. 12805) has remained at constant white magnitude of 19.88 since fading by 0.48 magnitudes between the first and second Swift/UVOT observations. Multi-color photometry confirms that the source is very red (B-V=1.26), with only upper limits in UV passbands). Its relation to the burst is still unknown. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00020194. This circular is an official product of the Swift team.