GRB090408A

This page lists all entries on GRB090408A in GRBweb

Summary GCN 9110 GCN 9114 GCN 9115 GCN 9120 GCN 9330

Summary table
Variable Value Source
T0 15:02:11 UTC GCN_circulars,Swift Det
ra 231.6180° GCN_circulars,Swift Det
decl 37.5640° GCN_circulars,Swift Det
GBM_located False
mjd 54929.6265162037 GCN_circulars,Swift Det
GCN 9110 table
GRB_name GRB090408A
GCN_number 9110
Detection_method Swift Det
t_trigger 15:02:11 UTC
ra 231.6180°
decl 37.5640°
Circular_text TITLE: GCN CIRCULAR NUMBER: 9110 SUBJECT: GRB 090408: Swift detection of a burst DATE: 09/04/08 15:17:41 GMT FROM: Scott Barthelmy at NASA/GSFC M. C. Stroh (PSU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), M. M. Chester (PSU), P. A. Evans (U Leicester), O. Godet (U Leicester), D. Grupe (PSU), C. Guidorzi (U Ferrara), S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA), F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester), J. P. Osborne (U Leicester), K. L. Page (U Leicester), D. M. Palmer (LANL), J. L. Racusin (PSU), P. Romano (INAF-IASFPA), B. Sbarufatti (INAF-IASFPA) and T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team: At 15:02:11 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 090408 (trigger=348720). Swift will execute a delayed slew to the burst. The BAT on-board calculated location is RA, Dec 231.618, +37.564, which is RA(J2000) = 15h 26m 28s Dec(J2000) = +37d 33' 51" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT TDRSS light curve shows nothing significant as is typical for an image trigger. Due to an observing constraint, Swift will not slew until T0+55 minutes. There will be no XRT or UVOT data until this time. Burst Advocate for this burst is M. C. Stroh (stroh AT astroh.org). 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 9114 table
GRB_name GRB090408A
GCN_number 9114
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 9114 SUBJECT: GRB 090408: Xinglong TNT optical Upper Limit DATE: 09/04/09 05:06:27 GMT FROM: L.P. Xin at NAOC L.P. Xin, W.K. Zheng, Y.L. Qiu, J.Y. Wei, J. Wang, J.S. Deng, Y. Urata and J.Y. Hu on behalf of EAFON report: We have observed GRB 090408 (Stroh et al., GCN 9110) with Xinglong TNT telescope from Apr.8,16:27:30 (UT), 1.42 hour after the burst. After combined 18*300s R band images, no new source was found in our combined image. The 3 sigma upper limits derived from USNO-B1.0 R2 magnitude is R=21.1 mag at the mean time of 1.67 hour since the trigger. This message may be cited. For more information about Xinglong GRBs Follow-up observations, please visit the website: http://www.xinglong-naoc.org/grb/
GCN 9115 table
GRB_name GRB090408A
GCN_number 9115
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 9115 SUBJECT: GRB090408, RIMOTS optical upper limits DATE: 09/04/09 09:40:27 GMT FROM: Kenta Kono at Miyazaki U K.Kono, E.Sonoda, N.Ohmori, H.hayasi, A.Daikyuji, Y.Nisioka, K.Noda, M.Yamauchi (University of Miyazaki) We have observed the field covering the error circle of GRB090408 (Swift trigger 348720, GCN 9110, M.C.Stroh et al.) with the unfiltered CCD camera on the 30-cm telescope at University of Miyazaki. The observation was started 15:05:13 UT (2 min. after the Swift trigger), under cloudy condition. First analyzable image was obtained at 15:16:52 UT (14 min. after the Swift trigger). We have compared our data of 30 sec exposures with the USNO-A2.0 catalog, There is no new source at the reported position. (GCN 9110,M.C.Stroh et al.) the upper limits are as follows: -------------------------------------------------------------- Start(UT) End(UT) Num. of frames Limit (mag.) -------------------------------------------------------------- 15:16:52 15:17:22 1 13.5 15:16:52 15:33:25 14 16.5 ---------------------------------------------------------------
GCN 9120 table
GRB_name GRB090408A
GCN_number 9120
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 9120 SUBJECT: GRB090408 : TAOS optical observations DATE: 09/04/10 07:28:36 GMT FROM: Kuiyun Huang at ASIAA GRB090408 : TAOS optical observations S.K. King, K.Y. Huang, S.Y. Wang and the TAOS team The four 50cm TAOS telescopes observed GRB 090408 position (Stroh et al, GCN9110) at 91s after the burst. No new optical emission was detected in the BAT possition error range. The 3-sigma limiting magnitude, compared with USNOB red stars, are as follows: ------------------------------------------------------------------------------ Mean Dealy(s) Exposure time Limit mag. Telescope ------------------------------------------------------------------------------- 157 5s x15 15.2 TAOSB 221.5 1s x60 14.8 TAOSD -------------------------------------------------------------------------------- -- Lijin (Kuiyun) Huang Postdoctoral Fellow Institute of Astronomy & Astrophysics, Academia Sinica (ASIAA) Phone: 886-2-3365 2200 x728
GCN 9330 table
GRB_name GRB090408A
GCN_number 9330
Detection_method Optical
ra 231.6157°
decl 37.5628°
Circular_text TITLE: GCN CIRCULAR NUMBER: 9330 SUBJECT: GRB 090408: optical upper limit DATE: 09/05/09 20:55:42 GMT FROM: Alexei Pozanenko at IKI, Moscow D. Shakhovskoy, V. Rumyantsev (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the Swift GRB 090408 (Swift trigger=348720; Stroh et al., GCN 9110) in R-filter on Apr. 8 with AZT-11 telescope of CrAO. We do not detect any new object within BAT erorr box (Stroh et al., GCN 9110) in a stacked image in R at ~ 3.7 hrs after burst onset. An upper limit photometry of combined images based on USNO B1.0 1275-0286482 RA(J2000)=15:26:27.78 Dec(J2000)= +37:33:46.2 R =17.55 is following: T0+ Filter, Exposure, mag., err. (d) (s) 0.1561 R 20x180 > 20.4 (3sigma)