GRB140402A

This page lists all entries on GRB140402A in GRBweb

Summary Fermi GBM IPN Swift Fermi LAT GCN 16069 GCN 16070 GCN 16071 GCN 16072 GCN 16073 GCN 16074 GCN 16075 GCN 16077 GCN 16078 GCN 16080 GCN 29370

Summary table
Variable Value Source
GRB_name_Fermi GRB140402007
T0 0:10:06 UTC Swift
ra 207.5920° Swift
decl 5.9710° Swift
pos_error 2.17e-02° Swift
T90 0.32 s Fermi_GBM
T90_error 0.63 s Fermi_GBM
T90_start 0:10:06.870 UTC Fermi_GBM
fluence 2.84e-07 erg/cm² Fermi_GBM
fluence_error 2.90e-08 erg/cm² Fermi_GBM
T100 1.19 s
GBM_located False
mjd 56749.00701388889 Swift
Fermi GBM table
GRB_name_Fermi GRB140402007
trigger_name bn140402007
ra 207.5921°
decl 5.9711°
pos_error 4.90e+00°
datum 2014-04-02
t_trigger 0:10:06.998 UTC
T90 0.32 s
T90_error 0.63 s
T90_start 0:10:06.870 UTC
fluence 2.84e-07 erg/cm²
fluence_error 2.90e-08 erg/cm²
flux_1024 1.30e+00 erg/cm²/s
flux_1024_error 1.70e-01 erg/cm²/s
flux_1024_time -1.28e-01 erg/cm²/s
flux_64 4.60e+00 erg/cm²/s
flux_64_error 7.45e-01 erg/cm²/s
IPN table
GRB_name GRB140402A
ra 207.4708°
decl 5.8667°
pos_error 2.00e-01°
Swift table
GRB_name GRB140402A
t_trigger 0:10:06 UTC
ra 207.5920°
decl 5.9710°
pos_error 2.17e-02°
T90 0.031 s
fluence 3.80e-08 erg/cm²
Fermi LAT table
GRB_name_Fermi GRB140402007
GRB_name GRB140402A
MET 418090210.0
datum 2014-04-02
t_trigger 0:10:07 UTC
ra 207.6510°
decl 6.0060°
pos_error 6.67e-02°
GCN 16069 table
GRB_name GRB140402A
GCN_number 16069
Detection_method Fermi LAT Det
t_trigger 0:10:07 UTC
ra 207.4700°
decl 5.8700°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16069 SUBJECT: GRB 140402A: Fermi-LAT detection of a burst DATE: 14/04/02 07:45:08 GMT FROM: Elisabetta Bissaldi at U.Innsbruk/IAPP E. Bissaldi (University & INFN Trieste), G. Vianello (Stanford U.) J. Chiang (KIPAC/SLAC) report on behalf of the Fermi-LAT team: At 00:10:07.00 on April 02, 2014, Fermi-LAT detected high-energy emission from GRB 140402A, which was also detected by Fermi-GBM (trigger 418090209/140402007). The best LAT on-ground location is found to be RA, Dec 207.47, 5.87 (J2000) with an error radius of 0.20 deg (90% containment, statistical error only). This position was 13 deg from the LAT boresight at the time of the trigger and is consistent with the last GBM ground location. The data from the Fermi-LAT show a significant increase in the event rate within 10 degrees of the GBM location after the GBM trigger that is spatially and temporally correlated with the GBM emission with high significance. More than 10 photons above 100 MeV are observed within 800 seconds. The highest-energy photon is a 3.5 GeV event which is observed 6.8 seconds after the GBM trigger. These numbers may increase as more data become available. A Swift ToO has been requested for this burst. The Fermi-LAT point of contact for this burst is Elisabetta Bissaldi (Elisabetta.Bissaldi@ts.infn.it). The Fermi-LAT is a pair conversion telescope designed to cover the energy band from 20 MeV to greater than 300 GeV. It is the product of an international collaboration between NASA and DOE in the U.S. and many scientific institutions across France, Italy, Japan and Sweden.
GCN 16070 table
GRB_name GRB140402A
GCN_number 16070
Detection_method Fermi GBM Det
t_trigger 0:10:07 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 16070 SUBJECT: GRB 140402A: Fermi GBM detection DATE: 14/04/02 14:29:06 GMT FROM: Hoi-Fung Yu at MPE Subject: GRB 140402A: Fermi GBM detection Peter A. Jenke (UAH) and Hoi-Fung Yu (MPE) report on behalf of the Fermi GBM Team: "At 00:10:07.00 UT on 02 April 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140402A (trigger 418090209 / 140402007). It was also detected by Fermi/LAT (Bissaldi et al. 2014, GCN 16069). The GBM on-ground location is consistent with the LAT position. The GBM light curve consists of a single pulse with a duration (T90) of about 0.3 s (50-300 keV). The time-averaged spectrum from T0-0.064 s to T0+0.064 s is well fit by a simple power law function with index -1.2 +/- 0.1. The event fluence (10-1000 keV) in this time interval is (4.0 +/- 0.4)E-07 erg/cm^2. The 64 ms peak photon flux measured starting from T0-0.064 s in the 10-1000 keV band is 4.6 +/- 0.7 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN 16071 table
GRB_name GRB140402A
GCN_number 16071
Detection_method Swift-BAT Det
ra 207.6510°
decl 6.0060°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16071 SUBJECT: GRB 140402A: Marginal BAT detection DATE: 14/04/02 14:44:10 GMT FROM: Jay R. Cummings at NASA/GSFC/Swift J. R. Cummings, S. Barthelmy (GSFC), Hans Krimm (USRA/GSFC) on behalf of the Swift-BAT team At 00:10:06 Swift-BAT triggered on GRB 140402A(trigger # 594308), also seen by FERMI-LAT (Bissaldi et al. GCN Circ #16069) and Fermi-GBM (Jenke & Yu, GCN Circ #16070) . There is a marginal BAT source (6 sigma), which is consistent with the Fermi-LAT position, at RA, Dec 207.651, +6.006, which is: RA (J2000) 13h 50m 36.2s Dec (J2000) 06d 00m 22s with an estimated 90% uncertainty radius of 4 arcmin. The partial coding was 73% (i.e. all of the Fermi-LAT error circle was in a fairly highly coded part of BAT's field of view). This burst appears to have a very hard spectrum. We may be able to improve the detection when we receive the photon event data. The unweighted lightcurve shows a single peak of about 0.32 seconds duration. A previous Swift TOO at the Fermi-LAT position did not cover this position. A new TOO has been requested.
GCN 16072 table
GRB_name GRB140402A
GCN_number 16072
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16072 SUBJECT: GRB 140402A : Xinglong TNT upper limit DATE: 14/04/02 18:10:55 GMT FROM: L.P. Xin at NAOC L. P. Xin, M. Zhai, J. Y. Wei, Y. L. Qiu, J. S. Deng, J. Wang, X. H. Han and C. Wu on behalf of EAFON report: We began to observe GRB 140402A (Bissaldi et al., GCN 16069; Peter et al, GCN 16070; Cummings et al., GCN 16071) under cloudy weather, with Xinglong 0.8-m TNT telescope at 16:04:37 (UT) , 15.95 hrs after the burst. No any new source in our 10*300 sec combined images down to the upper limit of 19.2 mag in R band, calibrated by nearby USNO B1.0 R2 mag.
GCN 16073 table
GRB_name GRB140402A
GCN_number 16073
Detection_method Swift-BAT Det
ra 207.5920°
decl 5.9710°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16073 SUBJECT: GRB 140402A BAT refined analysis DATE: 14/04/03 01:53:53 GMT FROM: Jay R. Cummings at NASA/GSFC/Swift J. R. Cummings on behalf of the BAT team Based on 10 seconds of photon event data, we present refined analysis of the BAT data on GRB 140402A (Bissaldi et al. GCN Circ #16069, Cummings et al. GCN Circ #16071). The best BAT location is RA, Dec 207.592, +5.971, which is: RA(J2000) 13h 50m 22.2s Dec(J2000) 05d 58' 16" with an estimated 90% confidence radius of 2.8 arcmin. This is 4 arcmin from the previously reported BAT position based on the immediately transmitted data (4 arcmin estimated 90% error), and 9.5 arcmin from the Fermi-LAT position (12 arcmin estimated statistical 90% error). The mask-weighted lightcurve shows a single nearly square pulse. T90 was about 0.031 +/- 0.003 seconds (estimated 90% confidence). A powerlaw fit to the spectrum from 15 to 150 keV has a photon index of 0.89 +/- 0.44 (90% confidence). In 0.034 seconds the fluence was (3.8 +/- 1.2) x 10^-8 ergs/cm^2 (62% confidence).
GCN 16074 table
GRB_name GRB140402A
GCN_number 16074
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 16074 SUBJECT: GRB 140402A: MASTER optical observations DATE: 14/04/03 11:53:03 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University E. Gorbovskoy, V. Lipunov, M. Pruzhinskaya, D.Denisenko, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.V.Chazov, D.Kuvshinov Lomonosov Moscow State University, Sternberg Astronomical Institute A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory V.Krushinski, I.Zalozhnih, A. Popov Ural Federal University, Kourovka Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE) Claudio Mallamaci, Carlos Lopez and Federico Podest Observatorio Astronomico Felix Aguilar (OAFA) MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Blagoveschensk was pointed to the GRB140402A (Jenke et. al GCN 16070) ~ 13.6h (49103 sec) after trigger time at 2014-04-02 13:48:30 UT directly after sunset and the weather conditions became good. We haven't found optical transient within Fermi-LAT (Bissaldi et. al. GCN 16069) and SWIFT-BAT (Cummings et. al GCN 16073) error-boxes on single and coadd images. The 5-sigma unfiltered upper limit has been about 18.2 mag on single (180 s) image and about 19.8 on coadd of 10 images with total exposure 1800 s. Also MASTER II robotic telescope located in Kislovodsk was twice pointed to this GRB by FERMI-GBM two alert coordinates 23 s and ~ 1h after trigger time. But the final Fermi-LAT and SWIFT-BAT position is out of our FOV due to big coordinates errors. The message may be cited.
GCN 16075 table
GRB_name GRB140402A
GCN_number 16075
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16075 SUBJECT: GRB 140402A: Swift-XRT observations DATE: 14/04/03 16:28:34 GMT FROM: Kim Page at U.of Leicester C. Pagani (U. Leicester) reports on behalf of the Swift team: We report on Swift-XRT observations of the Fermi/GBM and Fermi/LAT-detected GRB 140402A (Jenke & Yu, GCN Circ. 16070; Bissaldi, Vianello & Chiang, GCN Circ. 16069). The XRT observations consist of two pointings, the first centred on the reported Fermi/LAT GRB position (Bissaldi et al., GCN Circ. 16069), the second on the position derived from ground analysis of Swift-BAT data (Cummings, GCN Circ. 16071). The first XRT pointing consists of 4.5 ks of Photon Counting (PC) mode data, from 33.3 ks to 51.2 ks after the Fermi/LAT trigger, and is centred on the LAT position. No source is detected in the XRT data. The 3-sigma upper limit on the count rate is 3.6E-03 cts/s, which is 1.8E-13 erg cm^-2 s^-1 using a typical flux conversion of 5E-11 erg cm^-2 count^-1. These data only partially cover the BAT refined error circle (Cummings, GCN Circ. 16073). The second XRT pointing consists of 4.9 ks of PC mode data, from 56 ks to 107 ks after the Fermi/LAT trigger, and is centred on the BAT position. No source is detected in the XRT data. The 3-sigma upper limit on the count rate is 3.0E-03 cts/s, which is 1.5E-13 erg cm^-2 s^-1 using a typical flux conversion of 5E-11 erg cm^-2 count^-1. This circular is an official product of the Swift-XRT team.
GCN 16077 table
GRB_name GRB140402A
GCN_number 16077
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16077 SUBJECT: GRB 140402A: Swift/UVOT Upper Limits DATE: 14/04/03 21:19:39 GMT FROM: Alice Breeveld at MSSL-UCL A. A. Breeveld (UCL-MSSL) and C. Pagani (U. Leicester) report on behalf of the Swift/UVOT team: The Swift/UVOT took exposures at both the pointings for GRB140402A described in Pagani et al., GCN Circ. 16075. No optical afterglow consistent with the BAT position given by Cummings (GCN Circ. 16081) is detected in the UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) are: Filter T_start(s) T_stop(s) Exp(s) Mag white 57023 57665 632 >21.5 u 56375 61574 649 >20.5 v 57672 58344 659 >19.8 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.03 in the direction of the burst (Schlegel et al. 1998).
GCN 16078 table
GRB_name GRB140402A
GCN_number 16078
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16078 SUBJECT: GRB 140402A: Swift-XRT observations DATE: 14/04/04 07:30:49 GMT FROM: Claudio Pagani at U of Leicester C. Pagani (U. Leicester) reports on behalf of the Swift team: We report on Swift-XRT observations of the Fermi/GBM and Fermi/LAT-detected GRB 140402A (Jenke, GCN Circ. 16070, Bissaldi, GCN Circ. 16069). The XRT observations consist of two pointings, the first centered on the reported Fermi/LAT GRB position (Bissaldi, GCN Circ. 16069), the second on the position derived from ground analysis of Swift-BAT data (Cummings, GCN Circ. 16071). The first XRT pointing consists of 4.5 ks of Photon Counting (PC) mode data, from 33.3 ks to 51.2 ks after the Fermi/LAT trigger and are centered on the LAT position. No source is detected in the XRT data. The 3-sigma upper limit on the count rate is 3.6E-03 cts/s, which is 1.8E-13 erg cm^-2 s^-1 using a typical flux conversion of 5E-11 erg cm^-2 count^-1. These data only partially cover the BAT refined error circle (Cummings, GCN Circ. 16073). The second XRT pointing consists of 4.9 ks of PC mode data, from 56 ks to 107 ks after the Fermi/LAT trigger and are centered on the BAT position. No source is detected in the XRT data. The 3-sigma upper limit on the count rate is 3.0E-03 cts/s, which is 1.5E-13 erg cm^-2 s^-1 using a typical flux conversion of 5E-11 erg cm^-2 count^-1. This circular is an official product of the Swift-XRT team.
GCN 16080 table
GRB_name GRB140402A
GCN_number 16080
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 16080 SUBJECT: GRB 140402A: Deep limit on the optical afterglow from Magellan observations DATE: 14/04/04 17:26:41 GMT FROM: Wen-fai Fong at CFA W. Fong (Harvard), S. Ehlert (MIT), D. Osip (LCO/OCIW), B. Rackham (Arizona), M. McDonald (MIT), and E. Berger (Harvard) report: "We observed the location of the short-duration GRB 140402A, detected by Fermi/LAT (Bissaldi et al., GCN 16069), Fermi/GBM (Jenke et al., GCN 16070) and Swift/BAT (Cummings et al., GCN 16071) with the Inamori Magellan Areal Camera and Spectrograph (IMACS) mounted on the Magellan/Baade 6.5-m telescope to cover the full refined BAT position (Cummings et al., GCN 16073). We obtained 3x300-sec r-band observations on 2014 Apr 03.22 UT (1.21 days post-burst) in 0.7" seeing at an airmass of 1.2. To check for the presence of a fading optical source, we re-observed the field (3x300-sec) on 2014 Apr 04.35 UT, 2.33 days post-burst and 1.12 days after the first set of observations. Digital image subtraction of the two epochs using the ISIS software package reveals no residuals in or around the BAT-refined position. Therefore, calibrated to SDSS DR9 sources in the same field, we place a 3-sigma limit of r>25.0 mag on the optical afterglow of GRB 140402A at 1.21 days after the burst."
GCN 29370 table
GRB_name GRB140402A
GCN_number 29370
Detection_method Swift-XRT Other
ra 207.5986°
decl 5.7744°
Circular_text TITLE: GCN CIRCULAR NUMBER: 29370 SUBJECT: GRB 140402A: Swift-XRT refined Analysis DATE: 21/01/29 14:52:05 GMT FROM: Phil Evans at U of Leicester M. Perri (SSDC & INAF-OAR), V. D'Elia (SSDC & INAF-OAR), A. D'Ai (INAF-IASFPA), J. D. Gropp (PSU), J.A. Kennea (PSU), A. Tohuvavohu (U. Toronto), K.L. Page (U. Leicester), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester) and J.R. Cummings report on behalf of the Swift-XRT team: report on behalf of the Swift-XRT team: We have analysed 4.5 ks of XRT data for the Fermi/GBM-detected burst GRB 140402A (Cummings et al. GCN Circ. 16071), from 32.8 ks to 51.2 ks after the Fermi/GBM trigger. The data are entirely in Photon Counting (PC) mode. The refined XRT position is RA, Dec = 207.5986, +5.7744 which is equivalent to: RA (J2000): 13 50 23.67 Dec(J2000): +05 46 28.0 with an uncertainty of 5.6 arcsec (radius, 90% confidence). This position is 9.6 arcmin from the Fermi/GBM position. We cannot determine at the present time whether the source is fading. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00020373. This circular is an official product of the Swift-XRT team.