GRB240115B

This page lists all entries on GRB240115B in GRBweb

Summary Fermi GBM IPN GCN 35549 GCN 35551

Summary table
Variable Value Source
GRB_name_Fermi GRB240115698
T0 16:43:36.532 UTC Fermi_GBM
ra 191.8500° IPN
decl -35.5333° IPN
pos_error 5.00e-02° IPN
T90 163.076 s Fermi_GBM
T90_error 4.375 s Fermi_GBM
T90_start 16:43:36.532 UTC Fermi_GBM
fluence 8.51e-06 erg/cm² Fermi_GBM
fluence_error 6.54e-08 erg/cm² Fermi_GBM
T100 163.076 s
GBM_located False
mjd 60324.69695060185 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB240115698
trigger_name bn240115698
ra 188.3000°
decl -34.7900°
pos_error 3.80e+00°
datum 2024-01-15
t_trigger 16:45:37.623 UTC
T90 163.076 s
T90_error 4.375 s
T90_start 16:43:36.532 UTC
fluence 8.51e-06 erg/cm²
fluence_error 6.54e-08 erg/cm²
flux_1024 2.66e+00 erg/cm²/s
flux_1024_error 2.51e-01 erg/cm²/s
flux_1024_time 1.76e+01 erg/cm²/s
flux_64 4.80e+00 erg/cm²/s
flux_64_error 1.26e+00 erg/cm²/s
IPN table
GRB_name GRB240115B
ra 191.8500°
decl -35.5333°
pos_error 5.00e-02°
GCN 35549 table
GRB_name GRB240115B
GCN_number 35549
Detection_method Fermi GBM Det
t_trigger 16:45:37.620 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 35549 SUBJECT: GRB 240115B: Fermi GBM Detection DATE: 24/01/16 20:10:53 GMT FROM: sumanbala2210@gmail.com R. Hamburg (CNRS/IN2P3), S. Bala (USRA), and C. Meegan (UAH) report on behalf of the Fermi Gamma-ray Burst Monitor Team: "At 16:45:37.62 UT on 15 January 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240115B (trigger 727029942/240115698). GRB 240115B was also localized by INTEGRAL (S. Mereghetti et al. 2024, GCN 35541). The angle from the Fermi LAT boresight is 97 degrees. The GBM light curve consists of multiple peaks of emission with a duration (T90) of about 163 s (50-300 keV). The time-averaged spectrum from T0-26.63 s to T0+47.11 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.73 +/- 0.11, and the cutoff energy parameterized as Epeak, is 125 +/- 10. The event fluence (10-1000 keV) in this time interval is (5.13 +/- 0.26)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+17.6 s in the 10-1000 keV band is 2.6 +/- 0.3 ph/s/cm^2. 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/"
GCN 35551 table
GRB_name GRB240115B
GCN_number 35551
Detection_method AstroSat CZTI
Circular_text TITLE: GCN CIRCULAR NUMBER: 35551 SUBJECT: GRB 240115B: AstroSat CZTI detection DATE: 24/01/17 07:19:29 GMT FROM: Gaurav Waratkar at IIT Bombay J. Joshi (IUCAA), G. Waratkar (IITB), A. Vibhute (IUCAA), V. Bhalerao (IITB), D. Bhattacharya (Ashoka University/IUCAA), A. R. Rao (IUCAA/TIFR), and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration: Analysis of AstroSat CZTI data with the CIFT framework (Sharma et al., 2021, JApA, 42, 73) showed the detection of a long-duration GRB 240115B which was also detected by Fermi-GBM (Fermi GBM team, GCN Circ. 35540), and INTEGRAL (S.Mereghetti et al., GCN Circ. 35541). The source was detected in the CZT detectors in the 20-200 keV energy range. The light curve showed multiple peaks of emission with the strongest peak at 2024-01-15 16:45:40.50 UTC. The measured peak count rate associated with the burst is 80 (+42, -5) counts/s above the background in the combined data of three quadrants (out of four), with a total of 2052 (+489, -339) counts. The local mean background count rate was 280 (+1, -4) counts/s. Using cumulative rates, we measure a T90 of 47 (+7, -4) s. The source was also detected in the CsI anticoincidence (Veto) detector in the 100-500 keV energy range. The light curve showed multiple peaks of emission with the strongest peak at 2024-01-15 16:46:04.75 UTC. The measured peak count rate associated with the burst is 127 (+72, -1) counts/s above the background in the combined data of three quadrants (out of four), with a total of 1941 (+685, -748) counts. The local mean background count rate was 1168 (+5, -5) counts/s. We measure a T90 of 36 (+6, -10) s from the cumulative Veto light curve. CZTI is built by a TIFR-led consortium of institutes across India, including VSSC, URSC, IUCAA, SAC, and PRL. The Indian Space Research Organisation funded, managed, and facilitated the project. CZTI GRB detections are reported regularly on the payload site at: http://astrosat.iucaa.in/czti/?q=grb