GRB241207B

This page lists all entries on GRB241207B in GRBweb

Summary Fermi GBM GCN 38461 GCN 38472 GCN 38473 GCN 38510

Summary table
Variable Value Source
GRB_name_Fermi GRB241207869
T0 20:51:01 UTC GCN_circulars,Fermi GBM final loc
ra 234.8200° Fermi_GBM
decl -14.3300° Fermi_GBM
pos_error 7.51e+00° Fermi_GBM
T90 0.256 s Fermi_GBM
T90_error 0.716 s Fermi_GBM
T90_start 20:51:01.618 UTC Fermi_GBM
fluence 2.40e-07 erg/cm² Fermi_GBM
fluence_error 1.24e-08 erg/cm² Fermi_GBM
T100 0.874 s
GBM_located True
mjd 60651.86876157407 GCN_circulars,Fermi GBM final loc
Fermi GBM table
GRB_name_Fermi GRB241207869
trigger_name bn241207869
ra 234.8200°
decl -14.3300°
pos_error 7.51e+00°
datum 2024-12-07
t_trigger 20:51:01.746 UTC
T90 0.256 s
T90_error 0.716 s
T90_start 20:51:01.618 UTC
fluence 2.40e-07 erg/cm²
fluence_error 1.24e-08 erg/cm²
flux_1024 1.98e+00 erg/cm²/s
flux_1024_error 1.81e-01 erg/cm²/s
flux_1024_time -3.84e-01 erg/cm²/s
flux_64 7.06e+00 erg/cm²/s
flux_64_error 9.71e-01 erg/cm²/s
GCN 38461 table
GRB_name GRB241207B
GCN_number 38461
Detection_method Fermi GBM final loc
t_trigger 20:51:01 UTC
ra 234.8000°
decl -14.3000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 38461 SUBJECT: GRB 241207B: Fermi GBM Final Real-time Localization DATE: 24/12/07 21:01:43 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely SHORT GRB At 20:51:01 UT on 7 Dec 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 241207B (trigger 755297466.745718 / 241207869). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 234.8, Dec = -14.3 (J2000 degrees, equivalent to J2000 15h 39m, -14d 18'), with a statistical uncertainty of 8.0 degrees. The angle from the Fermi LAT boresight is 64.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241207869/quicklook/glg_skymap_all_bn241207869.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/bn241207869/quicklook/glg_healpix_all_bn241207869.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241207869/quicklook/glg_lc_medres34_bn241207869.gif
GCN 38472 table
GRB_name GRB241207B
GCN_number 38472
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 38472 SUBJECT: GRB 241207B: Swift/BAT-GUANO localization skymap of a short burst DATE: 24/12/09 03:53:49 GMT FROM: Jimmy DeLaunay at Penn State James DeLaunay (PSU), Samuele Ronchini (PSU), Aaron Tohuvavohu (Caltech), Gayathri Raman (PSU), Jamie A. Kennea (PSU), Tyler Parsotan (NASA GSFC) report: Swift/BAT did not localize GRB 241207B onboard (T0: 2024-12-07T20:51:01.75 UTC, Fermi trig 755297466) 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 10.3 in a 0.256 s analysis time bin, starting at T0 - 0.128 s. Using the NITRATES analysis, parameter estimation was performed to obtain the localization of this burst in the form of a HEALPIX Multi-Order Coverage (MOC) skymap. This localization accounts for both statistical and systematic errors. More details in the creation and calibration of these maps will soon be published (DeLaunay et al. 2024. in prep) The 90% credible area is 6,453 deg2 and the 50% credible area is 336 deg2. The integrated probability inside the coded field of view is <1%. The NITRATES skymap is consistent with the Fermi localization reported in the final position notice (GCN 38461). The combined Fermi/GBM+NITRATES 90% credible area is 358 deg2 and the 50% credible area is 108 deg2. A plot of the probability skymap can be viewed here: [skymap_plot](https://guano.swift.psu.edu/trigger_report?id=755297496/#:~:text=Probability%20Skymap) The probability skymap file can be downloaded from the link here [skymap_fits_file](https://guano.swift.psu.edu/files/755297496/0_n_PROBMAP) Instructions on how to read and manipulate this map can be found here: https://guano.swift.psu.edu/documentation More details about this burst can be found on the trigger report page here: https://guano.swift.psu.edu/trigger_report?id=755297496 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 38473 table
GRB_name GRB241207B
GCN_number 38473
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 38473 SUBJECT: Fermi GRB 241207B: Global MASTER-Net observations report DATE: 24/12/09 04:30:45 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V.Lipunov, E.Gorbovskoy, N.Tiurina, P.Balanutsa, , D.Vlasenko, I.Panchenko, A.Kuznetsov, G.Antipov, A.Sankovich, A.Sosnovskij, Yu.Tselik, M.Gulyaev, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU), O.Gress, N.Budnev (ISU), C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity) D.Buckley (SAAO), R.Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB 241207B ( Fermi GBM team, GCN 38461) errorbox 1 days 24239 sec after notice time and 1 days 24273 sec after trigger time at 2024-12-09 03:35:34 UT, with upper limit up to 17.2 mag. Observations started at twilight. The observations began at zenith distance = 78 deg. The sun altitude is -15.5 deg. The galactic latitude b = 31 deg., longitude l = 353 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2699915 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 110763 | 2024-12-09 03:35:34 | MASTER-Tavrida | (15h 02m 40.58s , -11d 54m 25.0s) | C | 180 | 16.6 | 110959 | 2024-12-09 03:38:50 | MASTER-Tavrida | (15h 10m 53.06s , -11d 52m 58.7s) | C | 180 | 17.2 | 111160 | 2024-12-09 03:42:12 | MASTER-Tavrida | (15h 02m 36.75s , -11d 53m 42.6s) | C | 180 | 15.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
GCN 38510 table
GRB_name GRB241207B
GCN_number 38510
Detection_method Fermi GBM Det
t_trigger 20:51:01.750 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 38510 SUBJECT: GRB 241207B: Fermi GBM Observation DATE: 24/12/10 01:28:08 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 20:51:01.75 UT on 07 December 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 241207B (trigger 755297466/241207869) which was also detected by Swift/BAT-NITRATES (DeLaunay et al. 2024, GCN 38472). The Fermi GBM on-ground location is consistent with the Swift/BAT-NITRATES position. The angle from the Fermi LAT boresight is 64 degrees. The GBM light curve consists of a single emission episode with a duration (T90) of about 0.3 s (50-300 keV). The time-averaged spectrum from T0-0.2 to T0+0.4 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.7 +/- 0.2 and the cutoff energy, parameterized as Epeak, is 344 +/- 110 keV. The event fluence (10-1000 keV) in this time interval is (3.8 +/- 0.6)E-07 erg/cm^2. The 64-ms peak photon flux measured starting from T0+0.0 s in the 10-1000 keV band is 7 +/- 1 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/"