GRB240305C

This page lists all entries on GRB240305C in GRBweb

Summary Fermi GBM GCN 35881 GCN 35882 GCN 35886

Summary table
Variable Value Source
GRB_name_Fermi GRB240305928
T0 22:16:36 UTC GCN_circulars,Fermi GBM final loc
ra 261.1000° Fermi_GBM
decl -3.2400° Fermi_GBM
pos_error 6.91e+00° Fermi_GBM
T90 0.32 s Fermi_GBM
T90_error 0.779 s Fermi_GBM
T90_start 22:16:36.486 UTC Fermi_GBM
fluence 4.87e-07 erg/cm² Fermi_GBM
fluence_error 1.35e-08 erg/cm² Fermi_GBM
T100 0.806 s
GBM_located True
mjd 60374.928194444445 GCN_circulars,Fermi GBM final loc
Fermi GBM table
GRB_name_Fermi GRB240305928
trigger_name bn240305928
ra 261.1000°
decl -3.2400°
pos_error 6.91e+00°
datum 2024-03-05
t_trigger 22:16:36.550 UTC
T90 0.32 s
T90_error 0.779 s
T90_start 22:16:36.486 UTC
fluence 4.87e-07 erg/cm²
fluence_error 1.35e-08 erg/cm²
flux_1024 2.21e+00 erg/cm²/s
flux_1024_error 2.28e-01 erg/cm²/s
flux_1024_time -2.56e-01 erg/cm²/s
flux_64 7.43e+00 erg/cm²/s
flux_64_error 1.01e+00 erg/cm²/s
GCN 35881 table
GRB_name GRB240305C
GCN_number 35881
Detection_method Fermi GBM final loc
t_trigger 22:16:36 UTC
ra 261.1000°
decl -3.2000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 35881 SUBJECT: GRB 240305C: Fermi GBM Final Real-time Localization DATE: 24/03/05 22:27:23 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely SHORT GRB At 22:16:36 UT on 5 Mar 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240305C (trigger 731369801.549802 / 240305928). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 261.1, Dec = -3.2 (J2000 degrees, equivalent to J2000 17h 24m, -3d 12'), with a statistical uncertainty of 9.1 degrees. The angle from the Fermi LAT boresight is 74.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240305928/quicklook/glg_skymap_all_bn240305928.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/bn240305928/quicklook/glg_healpix_all_bn240305928.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240305928/quicklook/glg_lc_medres34_bn240305928.gif
GCN 35882 table
GRB_name GRB240305C
GCN_number 35882
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 35882 SUBJECT: Fermi GRB 240305C: Global MASTER-Net observations report DATE: 24/03/05 22:30:29 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-Kislovodsk robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 240305C ( Fermi GBM team, GCN 35881) errorbox 390 sec after notice time and 423 sec after trigger time at 2024-03-05 22:23:40 UT, with upper limit up to 13.6 mag. The observations began at zenith distance = 77 deg. The sun altitude is -50.3 deg. The galactic latitude b = 17 deg., longitude l = 20 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2392695 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 454 | 2024-03-05 22:23:40 | MASTER-Kislovodsk | (17h 01m 25.66s , +00d 55m 11.6s) | C | 60 | 13.6 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
GCN 35886 table
GRB_name GRB240305C
GCN_number 35886
Detection_method AstroSat CZTI
Circular_text TITLE: GCN CIRCULAR NUMBER: 35886 SUBJECT: GRB 240305C: AstroSat CZTI detection of a short burst DATE: 24/03/06 08:35:52 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 short-duration GRB 240305C which was also detected by Fermi-GBM (Fermi GBM team, GCN Circ. 35881). The source was clearly 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 2024-03-05 22:16:36.87 UTC. The measured peak count rate associated with the burst is 606 (+300, -112) counts/s above the background in the combined data of three quadrants (out of four), with a total of 104 (+31, -29) counts. The local mean background count rate was 258 (+9, -16) counts/s. Using cumulative rates, we measure a T90 of 0.45 (+0.04, -0.12) s. 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