GRB240123B

This page lists all entries on GRB240123B in GRBweb

Summary Fermi GBM GCN 35608 GCN 35614 GCN 35629 GCN 35632

Summary table
Variable Value Source
GRB_name_Fermi GRB240123742
T0 17:48:02.706 UTC Fermi_GBM
ra 312.6600° Fermi_GBM
decl 17.2700° Fermi_GBM
pos_error 4.60e+00° Fermi_GBM
T90 11.52 s Fermi_GBM
T90_error 1.056 s Fermi_GBM
T90_start 17:48:02.706 UTC Fermi_GBM
fluence 2.37e-06 erg/cm² Fermi_GBM
fluence_error 1.65e-08 erg/cm² Fermi_GBM
T100 11.52 s
GBM_located True
mjd 60332.74169798611 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB240123742
trigger_name bn240123742
ra 312.6600°
decl 17.2700°
pos_error 4.60e+00°
datum 2024-01-23
t_trigger 17:48:03.218 UTC
T90 11.52 s
T90_error 1.056 s
T90_start 17:48:02.706 UTC
fluence 2.37e-06 erg/cm²
fluence_error 1.65e-08 erg/cm²
flux_1024 2.37e+00 erg/cm²/s
flux_1024_error 1.97e-01 erg/cm²/s
flux_1024_time 4.93e+00 erg/cm²/s
flux_64 3.47e+00 erg/cm²/s
flux_64_error 1.02e+00 erg/cm²/s
GCN 35608 table
GRB_name GRB240123B
GCN_number 35608
Detection_method Fermi GBM final loc
t_trigger 17:48:03 UTC
ra 312.7000°
decl 17.3000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 35608 SUBJECT: GRB 240123B: Fermi GBM Final Real-time Localization DATE: 24/01/23 17:58:30 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 17:48:03 UT on 23 Jan 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240123B (trigger 727724888.218344 / 240123742). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 312.7, Dec = 17.3 (J2000 degrees, equivalent to J2000 20h 50m, 17d 18'), with a statistical uncertainty of 6.9 degrees. The angle from the Fermi LAT boresight is 51.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240123742/quicklook/glg_skymap_all_bn240123742.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240123742/quicklook/glg_healpix_all_bn240123742.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240123742/quicklook/glg_lc_medres34_bn240123742.gif
GCN 35614 table
GRB_name GRB240123B
GCN_number 35614
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 35614 SUBJECT: Fermi GRB 240123B: Global MASTER-Net observations report DATE: 24/01/23 23:15:32 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko, G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gress, N.M. Budnev, O.Ershova (Irkutsk State University, API), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich (Blagoveschensk Educational State University) MASTER-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the Fermi GRB 240123B ( Fermi GBM team, GCN 35608) errorbox 17492 sec after notice time and 17523 sec after trigger time at 2024-01-23 22:40:06 UT, with upper limit up to 17.1 mag. The observations began at zenith distance = 79 deg. The sun altitude is -21.0 deg. The galactic latitude b = -17 deg., longitude l = 64 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2363736 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 17534 | 2024-01-23 22:40:06 | MASTER-Tunka | (20h 45m 43.98s , +25d 49m 07.9s) | C | 20 | 16.9 | 17626 | 2024-01-23 22:41:41 | MASTER-Tunka | (20h 25m 46.01s , +22d 02m 50.8s) | C | 15 | 16.9 | 17669 | 2024-01-23 22:42:23 | MASTER-Tunka | (20h 26m 42.78s , +23d 55m 03.1s) | C | 15 | 17.1 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
GCN 35629 table
GRB_name GRB240123B
GCN_number 35629
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 35629 SUBJECT: GRB 240123B: Swift/BAT-GUANO detection of a long burst DATE: 24/01/25 16:01:37 GMT FROM: Samuele Ronchini at PSU Samuele Ronchini (PSU), James DeLaunay (PSU), Gayathri Raman (PSU), Aaron Tohuvavohu (U Toronto), Jamie A. Kennea (PSU), Tyler Parsotan (NASA GSFC) report: Swift/BAT did not localize GRB 240123B onboard (T0: 2024-01-23T17:48:03.22 UTC, Fermi GCN 35608). The Fermi notice, distributed in near real-time, triggered the Swift Mission Operations Center operated Gamma-ray Urgent Archiver for Novel Opportunities (GUANO; Tohuvavohu et al. 2020, ApJ, 900, 1). Upon trigger by this notice, GUANO sent a command to the Swift Burst Alert Telescope (BAT) to save 200 seconds of BAT event-mode data from [-50,+150] seconds around the time of the burst. All the requested event mode data was delivered to the ground. The BAT likelihood search, NITRATES (DeLaunay + Tohuvavohu 2022, ApJ, 941, 169), performed on the temporal window [T0-20 s, T0+20 s], detects the burst with a sqrt(TS) of 15.5 in a 8.192 s analysis time bin, starting at T0 - 2.05 s. NITRATES results, independently, are ambiguous with respect to whether this burst originates from in or outside the BAT coded FOV, with a DeltaLLHOut of 2.75. See Section 9.1 and Figures 10 and 17 in the NITRATES paper for brief descriptions and interpretation of sqrt(TS), DeltaLLHPeak, and DeltaLLHOut. GUANO is a fully autonomous, extremely low latency, spacecraft commanding pipeline designed for targeted recovery of BAT event mode data around the times of compelling astrophysical events to enable more sensitive GRB searches. A live reporting of Swift/BAT event data recovered by GUANO can be found at: https://www.swift.psu.edu/guano/
GCN 35632 table
GRB_name GRB240123B
GCN_number 35632
Detection_method Fermi GBM Det
t_trigger 17:48:03.220 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 35632 SUBJECT: GRB 240123B: Fermi GBM Observation DATE: 24/01/25 19:45:45 GMT FROM: Lorenzo Scotton at UAH L. Scotton (UAH) and C. Meegan (UAH) report on behalf of the Fermi Gamma-ray Burst Monitor Team: "At 17:48:03.22 UT on 23 January 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240123B (trigger 727724888/240123742). which was also detected by Swift/BAT-GUANO (Ronchini et al. 2024, GCN 35629). The Fermi GBM Final Real-time Localization was reported in GCN 35608. The angle from the Fermi LAT boresight is 51 degrees. The GBM light curve consists of a single emission episode with a duration (T90) of about 12 s (50-300 keV). The time-averaged spectrum from T0-0.5 to T0+11.5 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.6 +/- 0.2 and the cutoff energy, parameterized as Epeak, is 250 +/- 30 keV. The event fluence (10-1000 keV) in this time interval is (2.6 +/- 0.2)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+4.9 s in the 10-1000 keV band is 2.4 +/- 0.2 ph/s/cm^2. A Band function fits the spectrum equally well with Epeak= 130 +/- 30 keV, alpha = 0.1 +/- 0.4 and beta = -1.9 +/- 0.1. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog: https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html For Fermi GBM data and info, please visit the official Fermi GBM Support Page: https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/"