GRB151112A

This page lists all entries on GRB151112A in GRBweb

Summary IPN Swift GCN 18588 GCN 18589 GCN 18590 GCN 18591 GCN 18592 GCN 18593 GCN 18594 GCN 18595 GCN 18596 GCN 18597 GCN 18603

Summary table
Variable Value Source
T0 13:44:48 UTC GCN_circulars,Swift Det
ra 2.0537° Swift
decl -61.6633° Swift
pos_error 1.94e-04° Swift
T90 19.32 s Swift
T90_start 13:44:48 UTC Swift
fluence 9.40e-07 erg/cm² Swift
redshift 4.1000
T100 19.32 s
GBM_located False
mjd 57338.57277777778 GCN_circulars,Swift Det
IPN table
GRB_name GRB151112A
ra 2.0458°
decl -61.7000°
pos_error 5.00e-02°
Swift table
GRB_name GRB151112A
t_trigger 13:44:48 UTC
ra 2.0537°
decl -61.6633°
pos_error 1.94e-04°
T90 19.32 s
fluence 9.40e-07 erg/cm²
redshift 4.1000
GCN 18588 table
GRB_name GRB151112A
GCN_number 18588
Detection_method Swift Det
t_trigger 13:44:48 UTC
ra 2.0450°
decl -61.6920°
Circular_text TITLE: GCN CIRCULAR NUMBER: 18588 SUBJECT: GRB 151112A: Swift detection of a burst DATE: 15/11/12 13:59:01 GMT FROM: Kim Page at U.of Leicester D. Malesani (DARK/NBI), S. D. Barthelmy (GSFC), P. A. Evans (U Leicester), J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA), N. P. M. Kuin (UCL-MSSL), K. L. Page (U Leicester), T. G. R. Roegiers (PSU) and B. Sbarufatti (INAF-OAB/PSU) report on behalf of the Swift Team: At 13:44:48 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 151112A (trigger=663179). Swift did not slew immediately to the burst. The BAT on-board calculated location is RA, Dec 2.045, -61.692 which is RA(J2000) = 00h 08m 11s Dec(J2000) = -61d 41' 32" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a FRED-shaped profile with superimposed peaks and total duration of about 20 sec. The peak count rate was ~2000 counts/sec (15-350 keV), at ~0 sec after the trigger. Due to an observing constraint, Swift will not slew until T0+50.8 minutes. There will be no XRT or UVOT data until this time. Burst Advocate for this burst is D. Malesani (malesani AT dark-cosmology.dk). 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 18589 table
GRB_name GRB151112A
GCN_number 18589
Detection_method Swift-XRT Other
ra 2.0565°
decl -61.6627°
Circular_text TITLE: GCN CIRCULAR NUMBER: 18589 SUBJECT: GRB 151112A: Swift-XRT observations DATE: 15/11/12 15:25:07 GMT FROM: Phil Evans at U of Leicester D.N. Burrows (PSU), J.A. Kennea (PSU), M. Perri (ASDC), G. Tagliaferri (INAF-OAB), P.A. Evans (U. Leicester) and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team: The XRT began observing the field of GRB 151112A at 14:37:09.1 UT, 3141.0 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 2.05651, -61.66273 which is equivalent to: RA(J2000) = 00h 08m 13.56s Dec(J2000) = -61d 39' 45.8" with an uncertainty of 3.6 arcseconds (radius, 90% containment). This location is 107 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. A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (1.92 x 10^20 cm^-2, Willingale et al. 2013), with an excess column of 3 (+2.37/-2.09) x 10^21 cm^-2 (90% confidence).
GCN 18590 table
GRB_name GRB151112A
GCN_number 18590
Detection_method correction
Circular_text TITLE: GCN CIRCULAR NUMBER: 18590 SUBJECT: GRB 151112A: initial UVOT observations DATE: 15/11/12 15:35:21 GMT FROM: Samantha Oates at MSSL S. R. Oates (IAA-CSIC, UCL-MSSL) reports on behalf of the UVOT team: UVOT took a finding chart exposure of GRB 151112A, 150 seconds with the White filter starting 3144 seconds after the BAT trigger (Malesani et al., GCN Circ. 18588). No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7 sub-image covers none of the XRT error circle (Burrows et al., GCN Circ. 18589). The 8'x8' region for the list of sources generated on-board covers 100% of the XRT 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 0.01.
GCN 18591 table
GRB_name GRB151112A
GCN_number 18591
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 18591 SUBJECT: GRB 151112A: MASTER-NET optical limit DATE: 15/11/12 19:29:37 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs D.Buckley, S. Potter, A.Kniazev, M.Kotze South African Astronomical Observatory E. Gorbovskoy, V. Lipunov, V.Shumkov, N.Tyurina, V.Kornilov, P.Balanutsa, A.Kuznetsov, D. Vlasenko Lomonosov Moscow State University, Sternberg Astronomical Institute R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres The Instituto de Astrofisica de Canarias A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Senik Kislovodsk Solar Station of the Pulkovo Observatory O.Gress, K.Ivanov, N.M.Budnev, V.A.Poleshchuk Irkutsk State University V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk V.Krushinski, I.Zalozhnih 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-SAAO robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in SAAO was pointed to the GRB151112A at 2015-11-12 18:12:09 UT (~5.5 hours ater trigger). On our first (180s exposure) set we did not find optical transient within Swift error-box (Malesani et al., GCN #18588; Burrows et al., GCN #18589; ) brighter then 20.5. The message may be cited.
GCN 18592 table
GRB_name GRB151112A
GCN_number 18592
Detection_method Swift-XRT Det
ra 2.0535°
decl -61.6633°
Circular_text TITLE: GCN CIRCULAR NUMBER: 18592 SUBJECT: GRB 151112A: Enhanced Swift-XRT position DATE: 15/11/12 21:18:52 GMT FROM: Phil Evans at U of Leicester J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team. Using 4055 s of XRT Photon Counting mode data and 6 UVOT images for GRB 151112A, 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 = 2.05348, -61.66328 which is equivalent to: RA (J2000): 00h 08m 12.84s Dec (J2000): -61d 39' 47.8" with an uncertainty of 1.4 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 18593 table
GRB_name GRB151112A
GCN_number 18593
Detection_method Swift-BAT Det
ra 2.0500°
decl -61.6800°
Circular_text TITLE: GCN CIRCULAR NUMBER: 18593 SUBJECT: GRB 151112A: Swift-BAT refined analysis DATE: 15/11/12 22:26:38 GMT FROM: Hans Krimm at NASA-GSFC H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), A. Y. Lien (GSFC/UMBC), D. Malesani (DARK/NBI), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), T. N. Ukwatta (LANL) (i.e. the Swift-BAT team): Using the data set from T-60 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 151112A (trigger #663179) (Malesani, et al., GCN Circ. 18588). The BAT ground-calculated position is RA, Dec = 2.050, -61.680 deg which is RA(J2000) = 00h 08m 11.9s Dec(J2000) = -61d 40' 46.7" with an uncertainty of 2.6 arcmin, (radius, sys+stat, 90% containment). The partial coding was 52%. The mask-weighted light curve shows several overlapping peaks, starting with a sharp rise peaking at T=0 sec, then a second peak at T+5 sec, a third at T+10 sec and falling to background by T+20 sec. T90 (15-350 keV) is 19.32 +- 31.24 sec (estimated error including systematics). The time-averaged spectrum from T-0.06 to T+61.94 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.77 +- 0.21. The fluence in the 15-150 keV band is 9.4 +- 1.2 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T-0.01 sec in the 15-150 keV band is 1.9 +- 0.2 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/663179/BA/
GCN 18594 table
GRB_name GRB151112A
GCN_number 18594
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 18594 SUBJECT: GRB 151112A: Swift-XRT refined Analysis DATE: 15/11/13 01:12:59 GMT FROM: Phil Evans at U of Leicester T.G.R. Roegiers (PSU), L.M. McCauley (PSU), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), C. Pagani (U. Leicester), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), A. D'ai (INAF-IASFPA), J.A. Kennea (PSU) and D. Malesani report on behalf of the Swift-XRT team: We have analysed 9.6 ks of XRT data for GRB 151112A (Malesani et al. GCN Circ. 18588), from 3.1 ks to 33.0 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Osborne et al. (GCN Circ. 18592). The light curve can be modelled with a power-law decay with a decay index of alpha=0.43 (+/-0.08). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 2.21 (+0.17, -0.16). The best-fitting absorption column is 1.1 (+/-0.4) x 10^21 cm^-2, in excess of the Galactic value of 1.9 x 10^20 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.0 x 10^-11 (4.0 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 1.1 (+/-0.4) x 10^21 cm^-2 Galactic foreground: 1.9 x 10^20 cm^-2 Excess significance: 4.1 sigma Photon index: 2.21 (+0.17, -0.16) If the light curve continues to decay with a power-law decay index of 0.43, the count rate at T+24 hours will be 0.040 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.2 x 10^-12 (1.6 x 10^-12) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00663179. This circular is an official product of the Swift-XRT team.
GCN 18595 table
GRB_name GRB151112A
GCN_number 18595
Detection_method GROND
ra 2.0532°
decl -61.6634°
Circular_text TITLE: GCN CIRCULAR NUMBER: 18595 SUBJECT: GRB 151112A: GROND Detection of the Optical/NIR Afterglow Candidate DATE: 15/11/13 01:27:10 GMT FROM: Fabian Knust at MPE/GROND F. Knust, T.-W. Chen and J. Greiner (all MPE Garching) report on behalf of the GROND team: We observed the field of GRB 151112A (Swift trigger 663179; Malesani et al., GCN #18588) 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 the ESO La Silla Observatory (Chile). Observations started at 00:09 UT on 2015-11-13, 10.5hrs after the GRB trigger, and are continuing. They were performed at an average seeing of 1.8" and at an average airmass of 1.2. We found a single point source within the 1.4" Swift-XRT error circle reported by Osborne et al. (GCN #18592) at RA (J2000) = 00h 08m 12.77s DEC (J2000) = -61d 39' 48.4" with an uncertainty of 0.5" in each coordinate. Based on 11.50 min of total exposures in g'r'i'z' and 12.00 min in JHK, we estimate preliminary magnitudes (all in AB system) of g' > 23.9 mag, r' = 23.9 +/- 0.373 mag, i' = 22.4 +/- 0.169 mag, z' = 22.5 +/- 0.288 mag, J > 21.0 mag, H > 20.5 mag, and K > 19.0 mag. Given magnitudes are calibrated against GROND zeropoints as well as 2MASS field stars and are not corrected for the expected Galactic foreground extinction corresponding to a reddening of E_(B-V)=0.01 mag in the direction of the burst (Schlegel et al. 1998).
GCN 18596 table
GRB_name GRB151112A
GCN_number 18596
Detection_method MAXI Det
t_trigger 13:45:24 UTC
ra 1.5430°
decl -61.9340°
Circular_text TITLE: GCN CIRCULAR NUMBER: 18596 SUBJECT: GRB 151112A: MAXI/GSC detection DATE: 15/11/13 01:34:09 GMT FROM: Satoshi Nakahira at JAXA/MAXI K. Yamaoka (Nagoya U.), H. Negoro, T. Masumitsu (Nihon U.), S. Ueno, H. Tomida, S. Nakahira, M. Kimura, M. Ishikawa, Y. E. Nakagawa (JAXA), T. Mihara, M. Sugizaki, M. Serino, M. Shidatsu, J. Sugimoto, T. Takagi, M. Matsuoka (RIKEN), N. Kawai, T. Yoshii, Y. Tachibana (Tokyo Tech), A. Yoshida, T. Sakamoto, Y. Kawakubo, H. Ohtsuki (AGU), H. Tsunemi, R. Imatani (Osaka U.), M. Nakajima, K. Tanaka (Nihon U.), Y. Ueda, T. Kawamuro, T. Hori (Kyoto U.), Y. Tsuboi, S. Kanetou (Chuo U.), M. Yamauchi, D. Itoh (Miyazaki U.), K. Yamaoka (Nagoya U.), M. Morii (ISM), report on behalf of the MAXI team: The MAXI/GSC nova alert system triggered a bright uncatalogued X-ray transient source at 13:45:24 UT. Assuming that the source flux was constant over the transit, we obtain the source position at (R.A., Dec) = (1.543 deg, -61.934 deg) = (00 06 10, -61 56 03) (J2000) with a 90% C.L. statistical error of 0.25 deg and an additional systematic uncertainty of 0.1 deg (90% containment radius). This position is consistent with Swift GRB 151112A (Malesani et al., GCN Circ. 18588). The X-ray flux averaged over the scan was 217 +- 31 mCrab (4-10keV, 1 sigma error). There was no significant excess flux in the previous transit at 12:12 UT and in the next transit at 2015-11-12 15:17 UT with an upper limit of 20 mCrab for each.
GCN 18597 table
GRB_name GRB151112A
GCN_number 18597
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 18597 SUBJECT: GRB 151112A: Swift/UVOT Upper Limits DATE: 15/11/13 11:13:43 GMT FROM: Samantha Oates at MSSL S. R. Oates (IAA-CSIC/UCL-MSSL) and D. Malesani (DARK/NBI) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 151112A 3144 s after the BAT trigger (Malesani et al., GCN Circ. 18588). No optical afterglow, consistent with the enhanced XRT position (Osborne et al. GCN Circ. 18592) and the GROND position (Knust et al., GCN Circ. 18595), 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 3144 3294 147 >21.3 white 3144 4527 344 >21.8 v 3301 4938 393 >20.2 b 4123 10985 349 >21.1 u 3917 10825 1082 >21.5 w1 3711 9912 1169 >21.4 m2 3506 15760 1240 >21.3 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.01 in the direction of the burst (Schlegel et al. 1998).
GCN 18603 table
GRB_name GRB151112A
GCN_number 18603
Detection_method GROND
redshift 4.1000
Circular_text TITLE: GCN CIRCULAR NUMBER: 18603 SUBJECT: GRB 151112A: GROND photometric redshift and i'-band prediction DATE: 15/11/14 20:28:01 GMT FROM: Jan Bolmer at MPE/Garching J. Bolmer, F. Knust and J. Greiner (all MPE Garching) report on behalf of the GROND team: We present further analysis of the GROND observations of GRB 151112A (Swift trigger 663179; Malesani et al., GCN #18588; Knust et al. GCN #18595). After correcting for the galactic foreground E(B-V)=0.01 mag and fitting a power-law model to the 7-channel GROND SED from the first night, we derive a photometric redshift of z = 4.1 +/- 0.3, according to the g'- and r'-band dropouts with g'-r' > 1.5 mag and r'-i' = 0.9 mag. Based on the observed decay between the first and the second night we predict an i'-band magnitude of ~24 mag for the coming night.