GRB160411A

This page lists all entries on GRB160411A in GRBweb

Summary Fermi GBM IPN Swift GCN 19279 GCN 19281 GCN 19283 GCN 19284 GCN 19286 GCN 19289 GCN 19291 GCN 19292 GCN 19293 GCN 19302 GCN 19313

Summary table
Variable Value Source
GRB_name_Fermi GRB160411062
T0 1:28:51 UTC GCN_circulars,Swift Det
ra 349.3569° Swift
decl -40.2423° Swift
pos_error 2.85e-04° Swift
T90 0.672 s Fermi_GBM
T90_error 0.435 s Fermi_GBM
T90_start 1:28:51.590 UTC Fermi_GBM
fluence 2.25e-07 erg/cm² Fermi_GBM
fluence_error 1.89e-08 erg/cm² Fermi_GBM
T100 1.262 s
GBM_located False
mjd 57489.06170138889 GCN_circulars,Swift Det
Fermi GBM table
GRB_name_Fermi GRB160411062
trigger_name bn160411062
ra 349.3571°
decl -40.2422°
pos_error 1.05e+01°
datum 2016-04-11
t_trigger 1:28:52.518 UTC
T90 0.672 s
T90_error 0.435 s
T90_start 1:28:51.590 UTC
fluence 2.25e-07 erg/cm²
fluence_error 1.89e-08 erg/cm²
flux_1024 2.31e+00 erg/cm²/s
flux_1024_error 2.65e-01 erg/cm²/s
flux_1024_time -7.68e-01 erg/cm²/s
flux_64 5.52e+00 erg/cm²/s
flux_64_error 1.39e+00 erg/cm²/s
IPN table
GRB_name GRB160411A
ra 349.3625°
decl -40.2667°
pos_error 5.00e-02°
Swift table
GRB_name GRB160411A
t_trigger 1:28:51 UTC
ra 349.3569°
decl -40.2423°
pos_error 2.85e-04°
T90 0.36 s
fluence 8.00e-08 erg/cm²
GCN 19279 table
GRB_name GRB160411A
GCN_number 19279
Detection_method Swift Det
t_trigger 1:28:51 UTC
ra 349.3620°
decl -40.2710°
Circular_text TITLE: GCN CIRCULAR NUMBER: 19279 SUBJECT: GRB 160411A: Swift detection of a short burst DATE: 16/04/11 01:37:41 GMT FROM: David Palmer at LANL K. L. Page (U Leicester), J. A. Kennea (PSU), A. Y. Lien (GSFC/UMBC), D. M. Palmer (LANL) and M. H. Siegel (PSU) report on behalf of the Swift Team: At 01:28:51 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 160411A (trigger=682339). Swift could not immediately slew to the burst due to an observing constraint. The BAT on-board calculated location is RA, Dec 349.362, -40.271 which is RA(J2000) = 23h 17m 27s Dec(J2000) = -40d 16' 14" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single-peaked structure with a duration of about 0.5 sec. The peak count rate was ~3000 counts/sec (15-350 keV), at ~0.2 sec after the trigger. Due to an observing constraint, Swift will not slew until T0+50.4 minutes. There will be no XRT or UVOT data until this time. Burst Advocate for this burst is K. L. Page (klp5 AT leicester.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 19281 table
GRB_name GRB160411A
GCN_number 19281
Detection_method Swift-XRT Other
ra 349.3559°
decl -40.2425°
Circular_text TITLE: GCN CIRCULAR NUMBER: 19281 SUBJECT: GRB 160411A: Swift-XRT observations DATE: 16/04/11 03:10:17 GMT FROM: Phil Evans at U of Leicester M. Perri (ASDC), P.A. Evans (U. Leicester), J.P. Osborne (U. Leicester), D.N. Burrows (PSU), J.A. Kennea (PSU) and G. Cusumano (INAF-IASF PA) report on behalf of the Swift-XRT team: The XRT began observing the field of GRB 160411A at 02:21:04.2 UT, 3132.3 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 349.35590, -40.24247 which is equivalent to: RA(J2000) = 23h 17m 25.42s Dec(J2000) = -40d 14' 32.9" with an uncertainty of 4.0 arcseconds (radius, 90% containment). This location is 103 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper. We cannot determine whether the source is fading at the present time. A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 1.61 x 10^20 cm^-2 (Willingale et al. 2013).
GCN 19283 table
GRB_name GRB160411A
GCN_number 19283
Detection_method Swift-XRT Det
ra 349.3569°
decl -40.2423°
Circular_text TITLE: GCN CIRCULAR NUMBER: 19283 SUBJECT: GRB 160411A: Enhanced Swift-XRT position DATE: 16/04/11 06:35:06 GMT FROM: Phil Evans at U of Leicester P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team. Using 1177 s of XRT Photon Counting mode data and 3 UVOT images for GRB 160411A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 349.35691, -40.24227 which is equivalent to: RA (J2000): 23h 17m 25.66s Dec (J2000): -40d 14' 32.2" 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. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177). This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN 19284 table
GRB_name GRB160411A
GCN_number 19284
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 19284 SUBJECT: GRB 160411A: MASTER-NET early optical observations. DATE: 16/04/11 08:06:17 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, N.Tyurina, V.Kornilov, P.Balanutsa, A.Kuznetsov, D.Kuvshinov Lomonosov Moscow State University, Sternberg Astronomical Institute D.Buckley, S. Potter, A.Kniazev, M.Kotze South African Astronomical Observatory K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Senik Kislovodsk Solar Station of the Pulkovo Observatory V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk 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) R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres The Instituto de Astrofisica de Canarias MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in SAAO was pointed to the GRB160411A 34 sec after notice time and 64 sec after trigger time at 2016-04-11 01:30:00 UT. On our first (10s exposure) set we haven't found optical transient within SWIFT error-box (Page et al GCN 19279, Evans et al GCN 19283). The 5-sigma upper limit has been about 16.0 mag on single (10 sec exposure) and 18.5 on coadd (170 sec exposure) image. The observations made on high zenit distance (z=80 deg). The message may be cited.
GCN 19286 table
GRB_name GRB160411A
GCN_number 19286
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 19286 SUBJECT: GRB 160411A: Swift-XRT refined Analysis DATE: 16/04/11 10:57:19 GMT FROM: Phil Evans at U of Leicester C. Pagani (U. Leicester), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), A. Melandri (INAF-OAB), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), D.N. Burrows (PSU), T.G.R. Roegiers (PSU), L.M. McCauley (PSU) and K.L. Page report on behalf of the Swift-XRT team: We have analysed 6.7 ks of XRT data for GRB 160411A (Page et al. GCN Circ. 19279), from 3.1 ks to 22.5 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Evans et al. (GCN Circ. 19283). The light curve can be modelled with a power-law decay with a decay index of alpha=1.5 (+3.3, -0.9). If the light curve continues to decay with a power-law decay index of 1.5, the count rate at T+24 hours will be 2.0 x 10^-4 count s^-1 The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00682339. This circular is an official product of the Swift-XRT team.
GCN 19289 table
GRB_name GRB160411A
GCN_number 19289
Detection_method Fermi GBM Det
t_trigger 1:28:52.520 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 19289 SUBJECT: GRB 160411A: Fermi GBM detection DATE: 16/04/11 16:29:44 GMT FROM: Oliver Roberts at UCD/Fermi O.J. Roberts (UCD), C.M. Hui (NASA/MSFC) report on behalf of the Fermi GBM Team: "At 01:28:52.52 UT on the 11th of April 2016, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 160411A (trigger 482030936 / 160411062), which was also detected by Swift (Page et al. 2016, GCN 19279). The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight at the GBM trigger time using the Swift XRT position is about 108 degrees. The GBM light curve consists of a weak, short burst with a duration (T90) of about 0.2 s (50-300 keV). The time-averaged spectrum from T0-0.51 s to T0-0.35 s is best fit by a power law function with an exponential high-energy cutoff function, with Epeak = 161 +/- 37 keV and alpha = 0.26 +/- 0.67. The event fluence (10-1000 keV) in this time interval is (1.38 +/- 0.30)E-07 erg/cm^2. The 64ms peak photon flux measured starting from T0-0.51 s in the 10-1000 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 19291 table
GRB_name GRB160411A
GCN_number 19291
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 19291 SUBJECT: GRB 160411A: Swift/UVOT Upper Limits DATE: 16/04/11 17:40:56 GMT FROM: Mike Siegel at PSU/Swift MOC M. H. Siegel (PSU) and K. L. Page (U Leicester) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 160411A 3139 s after the BAT trigger (Page et al., GCN Circ. 19279). No optical afterglow consistent with the XRT position (Perri et al. GCN Circ. 19281) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white_FC 3139 3289 147 >20.5 white 3139 4521 344 >21.0 v 3295 4931 393 >19.4 b 4116 4316 197 >19.9 u 3910 5546 393 >20.0 w1 3705 5342 393 >20.2 m2 3500 5136 393 >20.1 w2 4527 4726 197 >20.0 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.02 in the direction of the burst (Schlegel et al. 1998).
GCN 19292 table
GRB_name GRB160411A
GCN_number 19292
Detection_method GROND
Circular_text TITLE: GCN CIRCULAR NUMBER: 19292 SUBJECT: GRB 160411A: GROND Optical/NIR upper limits DATE: 16/04/11 18:19:10 GMT FROM: Robert Yates at MPE/Swift R Yates, T-W Chen, and J Greiner (all MPE Garching) report on behalf of the GROND team: We observed the field of GRB 160411A (Swift trigger 682339; Page et al., GCN #19279) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2 m MPG telescope at ESO La Silla Observatory (Chile). Observations started at 09:14 UT on 11-04-2016, 7 hr 45 min after the GRB trigger. They were performed at an average seeing of 1.9" in the r'-band and at an average airmass of 1.8. Based on the first 49 min of total exposures, we do not detect a source within the 4.0" Swift-XRT error circle reported by Perri et al. (GCN #19281) down to (all in the AB system): g' > 23.7 mag, r' > 23.9 mag, i' > 23.1 mag, z' > 22.9 mag, J > 21.3 mag, H > 20.8 mag, and K > 19.9 mag. The given limits are derived based on calibrating the images against GROND zeropoints and 2MASS field stars and are not corrected for the Galactic foreground extinction corresponding to a reddening of E_(B-V)=0.02 mag in the direction of the burst (Schlafly & Finkbeiner 2011).
GCN 19293 table
GRB_name GRB160411A
GCN_number 19293
Detection_method Optical
ra 349.3583°
decl -40.2422°
Circular_text TITLE: GCN CIRCULAR NUMBER: 19293 SUBJECT: GRB 160411A: Gemini-S optical observations DATE: 16/04/11 18:34:24 GMT FROM: Andrew Levan at U.of Leicester A.J.Levan (U. Warwick), W. Fong (Arizona) report on behalf of a larger collaboration: “We observed the location of GRB 160411A (Page et al. GCN 19279, Evans et al. GCN 19283) with Gemini-S and GMOS starting at 09:35 UT on 2016 April 11. Observations were taken in the i-band and began 9 hours after the BAT trigger. They were taken at the start of morning twilight as the source was rising, because of this the seeing is poor (1.4”) and depth relatively shallow. The region around the enhanced XRT position is relatively complex, with multiple sources in the surrounding area. Two obvious sources are located just outside the Eastern and Western edge of the XRT circle at locations of Source A: RA(J2000) 23:17:25.99 DEC(J2000) -40:14:32.0 Source B: RA(J2000) 23:17:25.37 DEC(J2000) -40:14:30.5 The sources have comparable magnitude and appear to be marginally extended, although the poor seeing and signal to noise complicates such analyses. With thank the Gemini staff, in particular Bryan Miller, for their assistance with these observations”
GCN 19302 table
GRB_name GRB160411A
GCN_number 19302
Detection_method Swift-BAT Det
ra 349.3700°
decl -40.2580°
Circular_text TITLE: GCN CIRCULAR NUMBER: 19302 SUBJECT: GRB 160411A: Swift-BAT refined analysis of the short burst DATE: 16/04/12 12:52:25 GMT FROM: Scott Barthelmy at NASA/GSFC M. Stamatikos (OSU), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), K. L. Page (U Leicester), D. M. Palmer (LANL), T. Sakamoto (AGU), T. N. Ukwatta (LANL) (i.e. the Swift-BAT team): Using the data set from T-239 to T+963 sec from the recent telemetry downlinks, we report further analysis of BAT short GRB 160411A (trigger #682339) (Page, et al., GCN Circ. 19279). The BAT ground-calculated position is RA, Dec = 349.370, -40.258 deg, which is RA(J2000) = 23h 17m 28.8s Dec(J2000) = -40d 15' 30.3" with an uncertainty of 2.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 27%. The mask-weighted light curve shows two overlapping peaks starting at ~T+0.0 and ending at ~T+0.5 sec. T90 (15-350 keV) is 0.36 +- 0.08 sec (estimated error including systematics). The time-averaged spectrum from T+0.06 to T+0.46 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.43 +- 0.28. The fluence in the 15-150 keV band is 8.0 +- 1.8 x 10^-8 erg/cm2. The 1-sec peak photon flux measured from T-0.24 sec in the 15-150 keV band is 1.5 +- 0.3 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/682339/BA/
GCN 19313 table
GRB_name GRB160411A
GCN_number 19313
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 19313 SUBJECT: GRB 160411A - Gemini-S afterglow candidate DATE: 16/04/13 18:49:20 GMT FROM: Andrew Levan at U.of Leicester A.J. Levan (U. Warwick), W. Fong (Arizona) and N.R. Tanvir (Leicester) report on behalf of a larger collaboration: “We obtained a second epoch of i-band observations of the short-GRB 160411A (Page et al. GCN 19279) on 2016 April 13, 10:01 UT. Photometry suggests that our previously identified source B (Levan & Fong GCN 19293) has faded by approximately 0.9 magnitudes between the two epochs obtained 48 hours apart, although a source close to this location is still faintly detected in our imaging. We therefore suggest this source may be the optical afterglow of GRB 160411A. We thank the Gemini staff, in particular Bryan Miller and Rodolfo Angeloni for assistance with these observations.”