GRB090117A

This page lists all entries on GRB090117A in GRBweb

Summary Fermi GBM IPN GCN 8817 GCN 8818 GCN 8819 GCN 8820 GCN 8821 GCN 8823 GCN 8954

Summary table
Variable Value Source
GRB_name_Fermi GRB090117640
T0 15:21:54 UTC GCN_circulars,superAGILE
ra 164.0042° IPN
decl -58.2500° IPN
pos_error 5.00e-02° IPN
T90 15.552 s Fermi_GBM
T90_error 4.58 s Fermi_GBM
T90_start 15:21:55.807 UTC Fermi_GBM
fluence 2.53e-06 erg/cm² Fermi_GBM
fluence_error 4.70e-08 erg/cm² Fermi_GBM
T100 17.359 s
GBM_located False
mjd 54848.64020833333 GCN_circulars,superAGILE
Fermi GBM table
GRB_name_Fermi GRB090117640
trigger_name bn090117640
ra 164.0000°
decl -58.2000°
pos_error 5.50e+00°
datum 2009-01-17
t_trigger 15:22:01.055 UTC
T90 15.552 s
T90_error 4.58 s
T90_start 15:21:55.807 UTC
fluence 2.53e-06 erg/cm²
fluence_error 4.70e-08 erg/cm²
flux_1024 1.02e+01 erg/cm²/s
flux_1024_error 2.14e-01 erg/cm²/s
flux_1024_time 1.28e-01 erg/cm²/s
flux_64 1.68e+01 erg/cm²/s
flux_64_error 9.46e-01 erg/cm²/s
IPN table
GRB_name GRB090117A
ra 164.0042°
decl -58.2500°
pos_error 5.00e-02°
GCN 8817 table
GRB_name GRB090117A
GCN_number 8817
Detection_method superAGILE
t_trigger 15:21:54 UTC
ra 164.0030°
decl -58.2490°
Circular_text TITLE: GCN CIRCULAR NUMBER: 8817 SUBJECT: GRB 090117 - SuperAGILE Localization of a long GRB DATE: 09/01/17 17:35:37 GMT FROM: Marco Feroci at IASF/INAF I. Donnarumma, E. Del Monte, Y. Evangelista, M. Feroci, F. Lazzarotto, L. Pacciani, P. Soffitta, E. Costa, I. Lapshov, M. Rapisarda (INAF/IASF Rome), A. Giuliani, S. Vercellone, A. Chen, S. Mereghetti, A. Pellizzoni, F. Perotti, P. Caraveo (INAF/IASF Milan), A. Bulgarelli, F. Gianotti, M. Trifoglio, G. Di Cocco, C. Labanti, F. Fuschino, M. Marisaldi, M. Galli, (INAF/IASF Bologna), M. Tavani, G. Pucella, F. D'Ammando, V. Vittorini, A. Argan, A. Trois, G. Piano, S. Sabatini (INAF/IASF Rome), G. Barbiellini, F. Longo, E. Moretti (INFN Trieste), P. Picozza, A. Morselli (INFN Roma-2), M. Prest, E. Vallazza (Universita' dell'Insubria), P. Lipari, D. Zanello (INFN Roma-1), and P. Giommi, C. Pittori, B. Preger, P. Santolamazza, F. Verrecchia (ASDC) and L. Salotti (ASI), on behalf of the AGILE Team, report: "SuperAGILE detected a gamma ray burst on 17 January 2009, at 15:21:54 UT. The event had a duration of about 10.0 s in the 20-60 keV energy range, with a precursor followed by the main peak. Assuming a crab-like energy spectrum, the peak flux on 1-s timescale was about 2.7E-07 erg/cm2/s. The burst position was reconstructed as (RA, Dec) (164.003 deg, -58.249 deg), which is: RA(J2000) = 10h 56m 00.75s Dec(J2000) = -58d 14' 57.84" with an uncertainty of 3' radius. The given uncertainty accounts for both the statistical and systematic errors. An analysis of the AGILE Gamma Ray Imager (GRID) data is in progress." This message may be cited.
GCN 8818 table
GRB_name GRB090117A
GCN_number 8818
Detection_method Swift-XRT Other
ra 164.0444°
decl -58.2336°
Circular_text TITLE: GCN CIRCULAR NUMBER: 8818 SUBJECT: GRB090117: Swift-XRT detection of a possible candidate afterglow DATE: 09/01/18 00:04:10 GMT FROM: Andy Beardmore at U Leicester A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team : The Swift-XRT began observing the field of the SuperAGILE GRB 090117 at 2009-01-17 19:10:13 UT, 13.7 ks after the burst. In a 1.9 ks Photon Counting mode X-ray image covering the 0.3-10 keV band, we detect an uncatalogued source within the SuperAGILE error circle at the astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue) of RA, Dec = 164.0444, -58.2336 which is equivalent to: RA (J2000): 10 56 10.66 Dec (J2000): -58 14 00.8 with an uncertainty of 2.4 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. The 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. At this stage we cannot tell if the source is fading to confirm that it is the X-ray counterpart of the SuperAGILE burst. This circular is an official product of the Swift-XRT team.
GCN 8819 table
GRB_name GRB090117A
GCN_number 8819
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 8819 SUBJECT: GRB090117 Swift/UVOT upper limits DATE: 09/01/18 03:23:36 GMT FROM: Patricia Schady at MSSL/Swift P. Schady (MSSL-UCL) reports on behalf of the Swift/UVOT team: The Swift/UVOT began observing the field of SuperAGILE GRB 090117 (Donnarumma et al., GCN 8817) at 2009-01-017 19:10:14 UT, 13.7 ks after the burst. We do not detect any source at the Swift XRT position (Beardmore et al., GCN 8818), although we note that there is a bright star with v-band magnitude v = 17.7 that lies within the XRT error circle. The UVOT 3-sigma upper limits are reported below: Filter T_start Exp(s) Mag (3-sigma upper limit) ------------------------------------------------------------- white 14.4 455 > 17.18 v 15.1 595 > 16.18 b 13.8 627 > 17.08 u 13.7 63 > 17.27 ------------------------------------------------------------- The quoted upper limits have not been corrected for the expected Galactic extinction along the line of sight of E_(B-V) = 1.63 mag. All photometry is on the UVOT photometric system described in Poole et al. (2008, MNRAS, 383, 627).
GCN 8820 table
GRB_name GRB090117A
GCN_number 8820
Detection_method GROND
Circular_text TITLE: GCN CIRCULAR NUMBER: 8820 SUBJECT: GRB 090117: GROND Upper Limits DATE: 09/01/18 04:13:15 GMT FROM: Andrea Rossi at TLS Tautenburg A. Rossi (Tautenburg Obs.), F. Olivares (MPE Garching), A. Kupcu Yoldas (ESO), J. Greiner, and A. Yoldas (both MPE Garching) report on behalf of the GROND team: We observed the field of GRB 090117 (SuperAGILE trigger, Donnarumma et al. GCN #8817) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2m MPI/ESO telescope at La Silla (Chile). Observations started at 01:40 UT, about 9 hrs after the GRB. We do not detect any new sources within the 5-sigma Swift/XRT error circle (Breadmore & Evans, GCN #8818). Note that there is a R~16 magnitude star within the XRT position contaminating the search for the GRB afterglow. Co-added images of the first 8 minutes yield the following specific limits (in AB magnitudes): g' > 23.7 r' > 24.1 i' > 23.2 z' > 22.2 J > 21.9 H > 20.9 K > 20.3 The magnitudes are calibrated against the GROND zeropoints and 2MASS field stars.
GCN 8821 table
GRB_name GRB090117A
GCN_number 8821
Detection_method Fermi GBM Det
t_trigger 15:22:01.050 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 8821 SUBJECT: GRB 090117 - Fermi GBM Observations DATE: 09/01/18 05:58:26 GMT FROM: Valerie Connaughton at MSFC Valerie Connaughton (UAH) reports on behalf of the Fermi GBM Team: "At 15:22:01.05 UT on 17 Jan 2009, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 090117 (trigger 253898523 / 090117640) which was also detected by SuperAGILE (Donnarumma et al. 2009, GCN 8817). The GBM on-ground location is consistent with the reported position from SuperAGILE. The angle from the Fermi LAT boresight is 51 degrees. The GBM light curve shows a soft event with a single peak lasting about 2 seconds superimposed on a lower-level continuum. The burst duration (T90) is about 21 s (8-1000 keV). The time-averaged spectrum from T0-5 s to T0+4 s is best fit by a Band function with Epeak = 25 +/- 2 keV, alpha = -0.4 +/- 0.5, and beta = -2.5 +/- 0.1 The event fluence (8-1000 keV) in this time interval is (1.8 +/- 1.3)E-6 erg/cm^2, with a 1 sec peak flux starting at T0 of 9.6 +/- 4.2 ph/cm^2/s and a 0.256 sec peak flux starting at T0+0.256 sec of 18.6 +/- 8.0 ph/cm^2/s. In view of the soft spectrum and the position of the burster close to the Galactic plane, other spectral forms were investigated that are more typical of galactic transient sources. Of these, the best fit was obtained using a thermal Bremmstrahlung model with kT = 49. The Band GRB function was preferred statistically with delta chi2 = -5 for 1 extra parameter. It is likely, therefore, that this is a soft GRB rather than a new galactic transient. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN 8823 table
GRB_name GRB090117A
GCN_number 8823
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 8823 SUBJECT: GRB 090117: confirmation of the X-ray afterglow DATE: 09/01/18 07:55:36 GMT FROM: Kim Page at U.of Leicester K.L. Page & A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team: Following the collection of further XRT data, we see that the source found by Beardmore & Evans (GCN Circ. 8818) is fading, so confirm it as the X-ray afterglow of GRB 090117 (Donnarumma et al., GCN Circ. 8817; Connaughton, GCN Circ. 8821). This circular is an official product of the Swift-XRT team.
GCN 8954 table
GRB_name GRB090117A
GCN_number 8954
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 8954 SUBJECT: Radio observation of GRB 090117 with ATCA DATE: 09/03/09 06:29:00 GMT FROM: Aquib Moin at CIRA/ATNF Aquib Moin (Curtin Institute of Radio Astronomy / Australia Telescope National Facility), Steven Tingay (Curtin Institute of Radio Astronomy), Chris Phillips (Australia Telescope National Facility), Gregory Taylor (University of New Mexico), Mark Wieringa (Australia Telescope National Facility) and Ralph Martin (Perth Observatory) report: We observed the SuperAGILE-GRID position of the GRB090117 (GCN 8817) at 4.800 and 4.928 GHz with the Australia Telescope Compact Array (ATCA) between 01:00:00 UT and 22:00:00 UT on February 21/22, 2009. We did not detect a radio source at the position of the GRB090117 (GCN 8817). The data at 4.800 and 4.928 GHz were merged and the radio flux density at the GRB position found out to be -0.0109 +/- 0.189 mJy/beam (1-sigma). The Australia Telescope Compact Array (/ Parkes telescope / Mopra telescope / Long Baseline Array) is part of the Australia Telescope which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. See the 4.800 & 4.928 GHz combined image at: http://cira.ivec.org/dokuwiki/doku.php/grb/grb090117/grb090117_field_image