GRB171112A

This page lists all entries on GRB171112A in GRBweb

Summary Fermi GBM IPN GCN 22118 GCN 22121 GCN 22123

Summary table
Variable Value Source
GRB_name_Fermi GRB171112868
T0 20:46:57.595 UTC Fermi_GBM
ra 20.0750° IPN
decl -59.6333° IPN
pos_error 1.00e+00° IPN
T90 302.789 s Fermi_GBM
T90_error 0.923 s Fermi_GBM
T90_start 20:46:57.595 UTC Fermi_GBM
fluence 1.43e-05 erg/cm² Fermi_GBM
fluence_error 6.18e-08 erg/cm² Fermi_GBM
T100 302.789 s
GBM_located False
mjd 58069.865944386576 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB171112868
trigger_name bn171112868
ra 20.4671°
decl -59.6781°
pos_error 2.88e+00°
datum 2017-11-12
t_trigger 20:50:17.151 UTC
T90 302.789 s
T90_error 0.923 s
T90_start 20:46:57.595 UTC
fluence 1.43e-05 erg/cm²
fluence_error 6.18e-08 erg/cm²
flux_1024 6.69e+00 erg/cm²/s
flux_1024_error 3.43e-01 erg/cm²/s
flux_1024_time 1.92e+00 erg/cm²/s
flux_64 8.86e+00 erg/cm²/s
flux_64_error 1.51e+00 erg/cm²/s
IPN table
GRB_name GRB171112A
ra 20.0750°
decl -59.6333°
pos_error 1.00e+00°
GCN 22118 table
GRB_name GRB171112A
GCN_number 22118
Detection_method MAXI Det
t_trigger 20:50:01 UTC
ra 20.4670°
decl -59.6780°
Circular_text TITLE: GCN CIRCULAR NUMBER: 22118 SUBJECT: GRB 171112A: MAXI/GSC detection DATE: 17/11/13 09:56:35 GMT FROM: H. Negoro at Nihon U. GRB 171112A: MAXI/GSC detection S. Sugita (Tokyo Tech), H. Negoro (Nihon U.), S. Nakahira (RIKEN), S. Ueno, H. Tomida, M. Ishikawa, Y. Sugawara, N. Isobe, R. Shimomukai (JAXA), T. Mihara, M. Sugizaki, W. Iwakiri, M. Shidatsu, F. Yatabe, Y. Takao, M. Matsuoka (RIKEN), N. Kawai, T. Yoshii, Y. Tachibana, S. Harita, Y. Muraki, K. Morita (Tokyo Tech), A. Yoshida, T. Sakamoto, M. Serino, Y. Kawakubo, Y. Kitaoka, T. Hashimoto (AGU), H. Tsunemi, T. Yoneyama (Osaka U.), M. Nakajima, T. Kawase, A. Sakamaki (Nihon U.), Y. Ueda, T. Hori, A. Tanimoto, S. Oda, T. Morita, S. Yamada (Kyoto U.), Y. Tsuboi, R. Sasaki, Y. Nakamura, H. Kawai (Chuo U.), M. Yamauchi, C. Hanyu, K, Hidaka (Miyazaki U.), T. Kawamuro (NAOJ), K. Yamaoka (Nagoya U.) The MAXI/GSC nova alert system triggered a bright uncatalogued X-ray transient source at 20:50:01 UT on 2017 November 12. Assuming that the source flux was constant over the transit, we obtain the source position at (R.A., Dec) = (20.467 deg, -59.678 deg) = (01 21 52, -59 40 40) (J2000) with a statistical 90% C.L. elliptical error region with long and short radii of 0.17 deg and 0.12 deg, respectively. The roll angle of long axis from the north direction is 107.0 deg counterclockwise. There is an additional systematic uncertainty of 0.1 deg (90% containment radius). We estimated a rectangular error box for the transient source with the following corners which were independently calculated with respect to each camera. camera 2: (20.320, -61.117) deg = (01 21 16, -61 07 01) (J2000) (19.513, -61.013) deg = (01 18 03, -61 00 47) (J2000) (21.134, -58.662) deg = (01 24 32, -58 39 42) (J2000) (21.890, -58.756) deg = (01 27 33, -58 45 23) (J2000) camera 7: (19.831, -60.456) deg = (01 19 19, -60 27 20) (J2000) (19.396, -60.398) deg = (01 17 35, -60 23 51) (J2000) (20.488, -58.842) deg = (01 21 57, -58 50 31) (J2000) (20.905, -58.897) deg = (01 23 37, -58 53 48) (J2000) There is an additional systematic uncertainty of 0.1 deg (90% containment radius). The X-ray flux averaged over the scan was 437 +- 44 mCrab (4.0-10.0keV, 1 sigma error). There was no significant excess flux in the previous transit at UT 19:14 and in the next transit at UT 22:19:10 with an upper limit of 20 mCrab for each.
GCN 22121 table
GRB_name GRB171112A
GCN_number 22121
Detection_method Konus-Wind Det
t_trigger 20:50:19.162 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 22121 SUBJECT: Konus-Wind observation of GRB 171112A DATE: 17/11/14 14:23:53 GMT FROM: Dmitry Svinkin at Ioffe Institute D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks, P. Oleynik, M. Ulanov, A. Tsvetkova, A. Lysenko, A.Kozlova, and T. Cline on behalf of the Konus-Wind team, report: The long-duration GRB 171112A (MAXI/GSC detection: Sugita et al., GCN Circ. 22118) triggered Konus-Wind at T0=75019.162 s UT (20:50:19.162). The burst light curve shows multipeaked structure which starts at ~T0-204 s and has a total duration of ~310 s. The emission is seen up to ~2 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB171112_T75019/ As observed by Konus-Wind, the burst had a fluence of 1.80(-0.33,+0.47)x10^-5 erg/cm2, and a 64-ms peak flux, measured from T0+0.720 s, of 2.43(-0.97,+1.17)x10^-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-averaged spectrum of the burst (measured from T0 to T0+16.640 s) is best fit in the 30 keV - 10 MeV range by the GRB (Band) model with the following parameters: the low-energy photon index alpha = -0.51(-0.30,+0.38), the high energy photon index beta = -2.67(-1.20,+0.44), the peak energy Ep = 200(-30,+34) keV (chi2 = 91/82 dof). All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.
GCN 22123 table
GRB_name GRB171112A
GCN_number 22123
Detection_method Fermi GBM Det
t_trigger 20:50:17.150 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 22123 SUBJECT: GRB 171112A: Fermi GBM Detection DATE: 17/11/14 21:46:06 GMT FROM: Matthew Stanbro at UAH/Fermi M. Stanbro, R. Hamburg, and C. Meegan (UAH) report on behalf of the Fermi GBM Team: "At 20:50:17.15 UT on 12 November 2017, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 171112A (trigger 532212622 / 171112868) which was also detected by the MAXI/GSC (Sugita et al. 2017, GCN 22118) The GBM on-ground location is consistent with the MAXI position. The angle from the Fermi LAT boresight at the GBM trigger time is 99 degrees. The GBM light curve consists of multiple episodes with a duration (T90) of about 145 s (50-300 keV). The time-averaged spectrum from T0-45.44 s to T0+104.07 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -1.49 +/- 0.06 and the cutoff energy, parameterized as Epeak, is 198 +/- 38 keV. The event fluence (10-1000 keV) in this time interval is (1.75 +/- 0.06)E-05 erg/cm^2. The 1-sec peak photon flux measured starting from T0+1.73 s in the 10-1000 keV band is 6.50 +/- 0.31 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."