GRB090621B

This page lists all entries on GRB090621B in GRBweb

Summary Fermi GBM IPN Swift GCN 9545 GCN 9547 GCN 9549 GCN 9550 GCN 9551 GCN 9552 GCN 9555 GCN 9557 GCN 9559 GCN 9561 GCN 9562 GCN 9565 GCN 9656 GCN 9764

Summary table
Variable Value Source
GRB_name_Fermi GRB090621922
T0 22:07:25 UTC GCN_circulars,Swift Det
ra 313.4707° Swift
decl 69.0282° Swift
pos_error 5.31e-04° Swift
T90 0.384 s Fermi_GBM
T90_error 1.032 s Fermi_GBM
T90_start 22:07:25.573 UTC Fermi_GBM
fluence 4.76e-07 erg/cm² Fermi_GBM
fluence_error 1.94e-08 erg/cm² Fermi_GBM
T100 0.957 s
GBM_located False
mjd 55003.92181712963 GCN_circulars,Swift Det
Fermi GBM table
GRB_name_Fermi GRB090621922
trigger_name bn090621922
ra 313.4321°
decl 69.0131°
pos_error 1.40e+01°
datum 2009-06-21
t_trigger 22:07:25.701 UTC
T90 0.384 s
T90_error 1.032 s
T90_start 22:07:25.573 UTC
fluence 4.76e-07 erg/cm²
fluence_error 1.94e-08 erg/cm²
flux_1024 2.02e+00 erg/cm²/s
flux_1024_error 2.84e-01 erg/cm²/s
flux_1024_time -4.48e-01 erg/cm²/s
flux_64 9.79e+00 erg/cm²/s
flux_64_error 1.50e+00 erg/cm²/s
IPN table
GRB_name GRB090621B
ra 313.4333°
decl 69.0167°
pos_error 5.00e-02°
Swift table
GRB_name GRB090621B
t_trigger 22:07:25 UTC
ra 313.4707°
decl 69.0282°
pos_error 5.31e-04°
T90 0.14 s
fluence 7.00e-08 erg/cm²
GCN 9545 table
GRB_name GRB090621B
GCN_number 9545
Detection_method Swift Det
t_trigger 22:07:25 UTC
ra 313.4320°
decl 69.0130°
Circular_text TITLE: GCN CIRCULAR NUMBER: 9545 SUBJECT: GRB 090621B: Swift detection of a short hard burst DATE: 09/06/21 22:38:35 GMT FROM: Scott Barthelmy at NASA/GSFC P.A. Curran (MSSL-UCL), S. D. Barthelmy (GSFC), A. P. Beardmore (U Leicester), D. N. Burrows (PSU), N. Gehrels (NASA/GSFC), J. A. Kennea (PSU), C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC), D. M. Palmer (LANL), A. Rowlinson (U Leicester), T. Sakamoto (NASA/UMBC), P. Schady (MSSL-UCL), M. C. Stroh (PSU) and H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team: At 22:07:25 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 090621B (trigger=355359). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 313.432, +69.013 which is RA(J2000) = 20h 53m 44s Dec(J2000) = +69d 00' 48" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a single spike with a duration less than 128 millisec. The peak count rate was ~7000 counts/sec (15-350 keV), at ~0 sec after the trigger. The XRT began observing the field at 22:08:36UT, 70.7 s after the BAT trigger. In promptly downlinked data, XRT found a faint uncatalogued source at RA, Dec (J2000) = 313.4700, 69.0282, which is RA = 20h 53m 52.8s Dec = +69d 01' 41.5" with an uncertainty of 8.0 arcseconds (radius, 90% containment). This location is 73 arcseconds from the BAT onboard position, within the BAT error circle. UVOT took a finding chart exposure of nominal 150 seconds with the White filter starting 76 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products at the XRT position. Data from the 2.7'x2.7' sub-image are not available at this time. The 8'x8' region for the list of sources generated on-board covers 100% of the BAT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.43 (Schlegel et al. 1998). Burst Advocate for this burst is P.A. Curran (pac AT mssl.ucl.ac.uk). 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 9547 table
GRB_name GRB090621B
GCN_number 9547
Detection_method Other
ra 20.0000°
decl 69.0000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 9547 SUBJECT: GRB 090621B: Optical Observations DATE: 09/06/22 01:41:48 GMT FROM: Andrew Levan at U.of Leicester A.J. Levan (U. Warwick), P. Curran (MSSL), K. Wiersema (U. Leicester) and P. Groot (Nijmegen) report: "We observed the location of the short GRB 090621B (Curran et al. GCN 9545) with the WHT, beginning at 23:48:33 UT. Observations were obtained in the i-band, with a total exposure time of 1800s. Inside the XRT error box we find a faint object at RA = 20 53 53.07 Dec = +69 01 40.8 with errors of approximately 0.5" in each axis. The object is significantly fainter than the DSSII limit, and shows no obvious variability between the first and last exposures (taken ~1.7 and ~2.3 hours post burst). Given the relatively high foreground extinction the probability of a chance alignment within the XRT error box is non-trivial. Hence we are unable to make strong statements about the association of this source with GRB 090621B at this stage."
GCN 9549 table
GRB_name GRB090621B
GCN_number 9549
Detection_method Optical
ra 313.4635°
decl 69.0271°
Circular_text TITLE: GCN CIRCULAR NUMBER: 9549 SUBJECT: GRB 090621B: RTT150 optical observations DATE: 09/06/22 09:55:15 GMT FROM: Rodion Burenin at IKI, Moscow A. Galeev, I. Bikmaev, N. Sakhibullin (KSU/AST), R. Burenin, M. Pavlinsky, R. Sunyaev (IKI), I. Khamitov, Z. Eker (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.) report: We observed the field of the Swift-BAT GRB 090621B (Curran et al., GCN9545) with Russian-Turkish 1.5-m telescope (RTT150, Bakirlitepe, TUBITAK National Observatory, Turkey), starting at 21 Jun, 22:52:55 UT, i.e. approximately 45 minutes after the burst, using TFOSC. We made 3x300s exposures in Rc band. On combined image we do not detect any new source inside the XRT error circle (Curran et al., GCN 9545) besides the source reported by Levan et. al. (GCN 9547), which is detected only marginally. There is also one more brighter point-like source (RA=20:53:51.25, DEC=+69:01:37.4, J2000) outside but close to the edge of XRT error circle. Using USNO-B1 stars we estimate its magnitude as m_Rc=21.8+/-0.06. The limiting magnitude of combined image is m_Rc ~23.6. The finding chart can be found at: http://hea.iki.rssi.ru/grb/090621b/indexeng.html
GCN 9550 table
GRB_name GRB090621B
GCN_number 9550
Detection_method Swift-XRT Other
ra 313.4705°
decl 69.0285°
Circular_text TITLE: GCN CIRCULAR NUMBER: 9550 SUBJECT: GRB 090621B: Swift-XRT refined analysis DATE: 09/06/22 10:16:55 GMT FROM: Andy Beardmore at U Leicester A.P. Beardmore, K.L. Page (U. Leicester) and P.A. Curran (UCL-MSSL) report on behalf of the Swift-XRT team: We have analysed five orbits of Swift-XRT photon counting (PC) mode data from GRB 090621B (Curran et al., GCN Circ. 9545), spanning the interval T+80 s to T+19.5 ks after the trigger. In 10.0 ks we find a refined XRT position of RA, Dec = 313.47049, 69.02845, which is equivalent to RA (J2000) = 20:53:52.92 Dec(J2000) = +69:01:42.4 with an uncertainty of 4.0 arcsec (90% containment). This position is 1.2 arcsec from the XRT position quoted in GCN Circ. 9545. The X-ray light-curve shows a faint, fading source with a decay index of 0.61 +/- 0.19. If the source continues to decay at the same rate we predict an XRT count rate of 8.6e-4 count s^-1 at T+24 hours. The PC mode spectrum from T+80 s to T+17.1 ks can be fit by an absorbed powerlaw with a photon index of 1.47+/-0.66, assuming a Galactic column density of 1.9e21cm^-2 in the direction of the burst. The observed (unabsorbed) 0.3-10keV flux for this model is 3.8e-13 (4.5e-13) erg cm^-2 s^-1. This circular is an official product of the Swift-XRT team.
GCN 9551 table
GRB_name GRB090621B
GCN_number 9551
Detection_method Swift-BAT Det
ra 313.4550°
decl 69.0340°
Circular_text TITLE: GCN CIRCULAR NUMBER: 9551 SUBJECT: GRB 090621B: Swift-BAT refined analysis DATE: 09/06/22 13:08:54 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), P.A. Curran (MSSL-UCL), E. E. Fenimore (LANL), N. Gehrels (GSFC), C. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), A. M. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team): Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT short hard burst GRB 090621B (trigger #355359) (Curran, et al., GCN Circ. 9545). The BAT ground-calculated position is RA, Dec = 313.455, 69.034 deg, which is RA(J2000) = 20h 53m 49.3s Dec(J2000) = +69d 02' 02.9" with an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment). The partial coding was 69%. The mask-weighted light curve shows a single peak starting a ~T+0 sec and ending at ~T+0.2 sec. There is a 2.5-sigma hint of extended emission from ~T+150 to ~T+240 sec. T90 (15-350 keV) is 0.14 +- 0.04 sec (estimated error including systematics). The time-averaged spectrum from T-0.028 to T+0.148 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 0.82 +- 0.23. The fluence in the 15-150 keV band is 7.0 +- 1.0 x 10^-8 erg/cm2. The 1-sec peak photon flux measured from T-0.44 sec in the 15-150 keV band is 3.9 +- 0.5 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/355359/BA/
GCN 9552 table
GRB_name GRB090621B
GCN_number 9552
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 9552 SUBJECT: GRB 090621B: Swift/UVOT Upper Limits DATE: 09/06/22 13:45:39 GMT FROM: Peter Curran at MSSL P.A. Curran (MSSL-UCL) reports on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 090621B 76s after the BAT trigger (Curran et al., GCN 9545). No optical afterglow consistent with the refined XRT position (Beardmore et al., GCN 9550) or the optical source observed by Levan et al. (GCN 9547) is detected in the UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Poole et al. 2008, MNRAS, 383, 627) for the first exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag wh 76 18173 1221 >22.29 v 618 10774 1142 >20.67 b 544 23952 1986 >21.88 u 289 29731 2675 >21.77 uw1 668 29017 2882 >21.63 um2 643 28110 2006 >21.32 uw2 594 6589 432 >20.50 The values quoted above are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.44 in the direction of the burst (Schlegel et al. 1998).
GCN 9555 table
GRB_name GRB090621B
GCN_number 9555
Detection_method VLA Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 9555 SUBJECT: GRB 090621B: VLA observations DATE: 09/06/22 16:03:04 GMT FROM: Edo Berger at Harvard E. Berger and W.-f. Fong (Harvard) report: "We observed the field centered on the XRT error circle of the short GRB 090621B (GCNs #9545,9550) with the VLA at a frequency of 8.46 GHz starting on 2009 June 22.53 UT (14.6 hours post burst). We do not detect any sources within the refined XRT error circle to a 3-sigma limit of 54 microJy." [GCN OPS NOTE(22jun09): Per author's request, the missing "B" was added to the GCN name.]
GCN 9557 table
GRB_name GRB090621B
GCN_number 9557
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 9557 SUBJECT: GRB 090621B: P60 Observations DATE: 09/06/22 17:40:24 GMT FROM: S. Bradley Cenko at Caltech S. B. Cenko (UC Berkeley), A. J. Levan (U. Warwick), M. M. Kasliwal, S. R. Kulkarni (Caltech) report on behalf of a larger collaboration: We have imaged the field of the short GRB090621B (Curran et al., GCN 9545) with the automated Palomar 60-inch telescope. Observations consisted of 20 x 180 s images in the i' filter at a mean epoch of 5:37 UT on 22 June 2009 (~ 7.5 hours after the burst). We detect the candidate afterglow reported by Levan et al. (GCN 9547) and Galeev et al. (GCN 9549) at low significance. Using several USNO-B sources in the field for reference, we measure a magnitude of I ~ 22.9. No other sources are detected inside the revised XRT error circle (Beardmore et al., GCN 9550). Directly comparing our P60 image with the WHT image from ~ 2 hours after the burst (GCN 9547), we find the candidate has faded marginally by 0.5 +- 0.3 mag. Further late-time observations will be needed to confirm if this is the optical afterglow of GRB090621B.
GCN 9559 table
GRB_name GRB090621B
GCN_number 9559
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 9559 SUBJECT: GRB 090621B: Gemini spectrum of afterglow candidate DATE: 09/06/22 19:42:32 GMT FROM: Edo Berger at Harvard E. Berger (Harvard), A. Cucchiara, D.B. Fox (Penn State), and A.J. Levan (U. Warwick) report: "On 2009 June 22.41 UT we used the GMOS instrument mounted on the Gemini-North 8-m telescope to obtain spectroscopic observations of the candidate optical afterglow (GCN #9547) of the short GRB 090621B (GCN #9545). A pair of 1800 sec exposures were obtained with a wavelength coverage of 4500-7500A. The combined spectrum of the source reveals broad features typical of an early M dwarf star. We therefore conclude that this object is unrelated to the GRB."
GCN 9561 table
GRB_name GRB090621B
GCN_number 9561
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 9561 SUBJECT: GRB 090621B: I-band observations from 1.23m CAHA DATE: 09/06/22 20:05:29 GMT FROM: Javier Gorosabel at IAA-CSIC J. Gorosabel (IAA-CSIC), P. Kubanek (GACE and IAA-CSIC), S. Mottola (DLR), U. Carsenty (DLR), A. Levan (U. Warwick), M. Jelinek (IAA- CSIC), A.J. Castro-Tirado (IAA-CSIC), A. de Ugarte Postigo (ESO, INAF/ OAB), report on behalf of a larger collaboration: "Following the detection of the short-hard GRB 090621B by SWIFT (Curran et al. GCNC 9545) we carried out I-band observations with the 1.23m telescope at Observatory of Calar Alto. The observations were done on June 22.094-22.161 UT (4.14-5.75 hours post burst) with a total exposure time of 22x240s. The candidates reported by Levan et al. (GCNC 9547) and Galeev (GCNC 9549) are preliminarily detected at I~22.5 and I~20.6, respectively, against USNO-B field stars."
GCN 9562 table
GRB_name GRB090621B
GCN_number 9562
Detection_method Fermi GBM Det
t_trigger 22:07:25.700 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 9562 SUBJECT: GRB 090621B: Fermi GBM detection DATE: 09/06/23 00:03:11 GMT FROM: Adam Goldstein at Fermi-GBM/UAH A. Goldstein (UAH) and J.M. Burgess (UAH) report on behalf of the Fermi GBM Team: "At 22:07:25.70 UT on 21 June 2009, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 090621B (trigger 267314847 / 090621922) which was also detected by the Swift BAT (P.A. Curran et al. 2009, GCN 9545). The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight is 108 degrees. The GBM light curve consists of one short spike with a duration (T90) of about 0.128 s (8-1000 keV). The time-averaged spectrum from T0-0.064 s to T0+0.064 s is best fit by a Band function with Epeak = 321.60 +/- 129.00 keV, alpha = -0.13 +/- 0.38, and beta = -1.57 +/- 0.08 (chi squared 401 for 481 d.o.f.). The event fluence (8-1000 keV) in this time interval is (3.71 +/- 0.58)E-07 erg/cm^2. The 0.128-sec peak photon flux measured starting from T0-0.064 s in the 8-1000 keV band is 6.4 +/- 1.4 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN 9565 table
GRB_name GRB090621B
GCN_number 9565
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 9565 SUBJECT: GRB 090621B: GRT Optical Observation DATE: 09/06/23 02:18:16 GMT FROM: Takanori Sakamoto at NASA/GSFC T. Sakamoto (UMBC/GSFC), D. Donato (ORAU/GSFC), N. Gehrels (GSFC), T. Okajima (JHU/GSFC), T.N. Ukwatta (GWU/GSFC), Y. Urata (NCU), C.A. Wallace (FGCU) We observed the field of GRB 090621B detected by Swift (trigger #355359; Curran et al., GCN #9545) with the 14-inch Goddard Robotic Telescope (GRT) located at the Goddard Geophysical and Astronomical Observatory (http://cddisa.gsfc.nasa.gov/ggao/). 100 set of 30 sec exposures were taken in the R filter starting from June 22 01:51:44 (UT) about 3.7 hours after the trigger and stopped on June 22 02:47:51 (UT). We do not detect the optical afterglow both in the individual images and the combined image inside the XRT position (Beardmore et al., GCN #9550). The estimated three sigma upper limit of the combined image (total exposure of 2880 sec; excluding four bad quality images) is ~17.8 mag using the USNO-B1 catalog.
GCN 9656 table
GRB_name GRB090621B
GCN_number 9656
Detection_method Optical
ra 313.4887°
decl 69.0299°
Circular_text TITLE: GCN CIRCULAR NUMBER: 9656 SUBJECT: GRB 090621B: MTM-500 optical observations DATE: 09/07/11 20:19:43 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Pozanenko (IKI), A. Volnova (SAI MSU), V. Kouprianov, Ya. Naiden, V. Slesarenko, A. Devyatkin (Pulkovo Observatory), report on behalf of larger GRB follow-up collaboration: We observed the field of the Swift GRB 090621B (Curran et al, GCN 9545) with MTM-500 telescope of Kislovodsk solar station of the Pulkovo observatory in two series in R-filter between (UT) 2009-06-21 22:31 - 2009-06-22 00:01, i.e. starting ~24 minutes after burst onset. The upper limit of a stacked image of first 15 frames based on USNO B1.0 stars is following T0+ Filter Exp. mag. (mid, d) s 0.02147 R 15x60 >18.5 (3 sigma) While we do not detect objects reported in GCN 9547 (Levan et al.) and GCN 9549 (Galeev et al.) in the stacked image above, we may suggest a possible object near the edge of the refined XRT error box (Beardmore et al., GCN 9550) in coordinates (J2000) RA = 20:53:53.24 Dec = +69:01:45.5. This possible object appears more intense in the stacked image of the first five frames, and does not appear in the second epoch of our observations started on Jun.21 (UT) 23:37. Due to low S/N ratio we cannot confirm the object is real. We encourage re-analysis of later deep observations to clarify the nature of the object. The finding chart can be found at http://grb.rssi.ru/GRB090621B/grb090621B_MTM.png , where source labeled #5 is the USNO B1.0 star 1590-0172172 (RA(J2000)=20:53:57.28, Dec(J2000)=+69:01:47.8, R2=19.41)
GCN 9764 table
GRB_name GRB090621B
GCN_number 9764
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 9764 SUBJECT: GRB 090621B: MAGIC telescope GeV observation DATE: 09/08/11 07:10:46 GMT FROM: Markus Garczarczyk at MPI/MAGIC Carosi A. (INAF Rome), Gaug M. (IAC Tenerife), Antonelli L.A. (INAF Rome), Bastieri D. (Univ. Padova), Becerra Gonzalez J. (IAC Tenerife), Covino S. (INAF Rome), Galante N. (MPI Munich), Garczarczyk M. (IFAE Barcelona), La Barbera A. (INAF Palermo), Longo F. (INFN Trieste), Scapin V. (Univ. Udine) and Spiro S. (INAF Rome) for the MAGIC collaboration The MAGIC Imaging Atmospheric Cherenkov Telescope performed a follow-up observation of the BAT short burst GRB090621B (Curran et al., GCN Circ. 9545). The burst was also triggered by Fermi-GBM (Goldstein et al., GCN Circ. 9562). We received the GCN alert at 22:07:38 UT (T0+13s). Data taking with MAGIC started at 22:43:33 UT (T0+2169s), when the GRB zenith angle went below 60 degrees. The observation continued for 12570 s. No evidence for VHE gamma-ray emission above the analysis threshold was found. A preliminary analysis, for the hypothesis of steady emission and assumption of a differential photon spectral index of -2.5, yields the following 95% CL differential flux upper limits, including a 30% systematic uncertainty on the telescope efficiency. Because of improving sensitivities and analysis threshold due to decreasing zenith angle during the observation, the data sample was split into 4 parts: E ( 300-1000 GeV): 0.42 * 10^-10 erg cm^-2 s^-1 for a time window from 22:43:33 UT to 23:38:37 UT Analysis threshold: 407 GeV E ( 175- 300 GeV): 5.61 * 10^-10 erg cm^-2 s^-1 E ( 300-1000 GeV): 0.19 * 10^-10 erg cm^-2 s^-1 for a time window from 23:38:37 UT to 00:32:31 UT Analysis threshold: 291 GeV E ( 175- 300 GeV): 4.97 * 10^-10 erg cm^-2 s^-1 E ( 300-1000 GeV): 0.24 * 10^-10 erg cm^-2 s^-1 for a time window from 00:32:31 UT to 01:23:06 UT Analysis threshold: 224 GeV E ( 125- 175 GeV): 15.27 * 10^-10 erg cm^-2 s^-1 E ( 175- 300 GeV): 1.25 * 10^-10 erg cm^-2 s^-1 E ( 300-1000 GeV): 0.22 * 10^-10 erg cm^-2 s^-1 for a time window from 01:23:06 UT to 02:13:04 UT Analysis threshold: 186 GeV We can also exclude emission of a constant flux in any 100s time bin smaller than: E ( 300-1000 GeV): 4.02 * 10^-10 erg cm^-2 s^-1 for a time window from 22:43:33 UT to 23:38:37 UT Analysis threshold: 407 GeV E ( 175- 300 GeV): 23.60 * 10^-10 erg cm^-2 s^-1 E ( 300-1000 GeV): 1.52 * 10^-10 erg cm^-2 s^-1 for a time window from 23:38:37 UT to 00:32:31 UT Analysis threshold: 291 GeV E ( 175- 300 GeV): 15.33 * 10^-10 erg cm^-2 s^-1 E ( 300-1000 GeV): 1.41 * 10^-10 erg cm^-2 s^-1 for a time window from 00:32:31 UT to 01:23:06 UT Analysis threshold: 224 GeV E ( 125- 175 GeV): 22.23 * 10^-10 erg cm^-2 s^-1 E ( 175- 300 GeV): 7.87 * 10^-10 erg cm^-2 s^-1 E ( 300-1000 GeV): 1.15 * 10^-10 erg cm^-2 s^-1 for a time window from 01:23:06 UT to 02:13:04 UT Analysis threshold: 186 GeV This message can be cited.