GRBweb by P. Coppin

This page lists all entries on GRB241025C in GRBweb

Summary Fermi GBM GCN 37883 GCN 37887 GCN 38163

Summary table
Variable	Value	Source
GRB_name_Fermi	GRB241025650
T0	15:36:07.391 UTC	Fermi_GBM
ra	152.5600°	Fermi_GBM
decl	48.2700°	Fermi_GBM
pos_error	3.16e+00°	Fermi_GBM
T90	4.992 s	Fermi_GBM
T90_error	0.659 s	Fermi_GBM
T90_start	15:36:07.391 UTC	Fermi_GBM
fluence	1.90e-06 erg/cm²	Fermi_GBM
fluence_error	3.47e-08 erg/cm²	Fermi_GBM
T100	4.992 s
GBM_located	True
mjd	60608.65008554398	Fermi_GBM

Fermi GBM table
GRB_name_Fermi	GRB241025650
trigger_name	bn241025650
ra	152.5600°
decl	48.2700°
pos_error	3.16e+00°
datum	2024-10-25
t_trigger	15:36:10.655 UTC
T90	4.992 s
T90_error	0.659 s
T90_start	15:36:07.391 UTC
fluence	1.90e-06 erg/cm²
fluence_error	3.47e-08 erg/cm²
flux_1024	9.65e+00 erg/cm²/s
flux_1024_error	3.07e-01 erg/cm²/s
flux_1024_time	2.56e-01 erg/cm²/s
flux_64	1.47e+01 erg/cm²/s
flux_64_error	1.29e+00 erg/cm²/s

GCN 37883 table
GRB_name	GRB241025C
GCN_number	37883
Detection_method	Fermi GBM Other
ra	152.5600°
decl	48.2700°
Circular_text	TITLE: GCN CIRCULAR NUMBER: 37883 SUBJECT: GRB 241025C: Fermi GBM Final Localization DATE: 24/10/25 17:49:39 GMT FROM: Lorenzo Scotton at UAH The Fermi GBM team reports the detection of a likely SHORT GRB "At 15:36:10.66 UT on 25 October 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 241025C (trigger 751563375/241025650). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 152.56, Dec = 48.27 (J2000 degrees, equivalent to J2000 10h 10m, +48d 16'), with a statistical uncertainty of 2.29 degrees. The angle from the Fermi LAT boresight is 75 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241025650/quicklook/glg_skymap_all_bn241025650.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/bn241025650/quicklook/glg_healpix_all_bn241025650.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241025650/quicklook/glg_lc_medres34_bn241025650.gif"

GCN 37887 table
GRB_name	GRB241025C
GCN_number	37887
Detection_method	Fermi GBM Det
t_trigger	15:36:10.660 UTC
Circular_text	TITLE: GCN CIRCULAR NUMBER: 37887 SUBJECT: GRB 241025C: Fermi GBM Detection DATE: 24/10/25 22:41:22 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 15:36:10.66 UT on 25 October 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 241025C (trigger 751563375/241025650). The GBM on-ground calculated location was reported in GCN Circular 37883. The angle from the Fermi LAT boresight is 75 degrees. The GBM light curve consists of a single emission episode with a duration (T90) of about 5 s (50-300 keV). The time-averaged spectrum from T0-3.0 to T0+3.2 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.68 +/- 0.13 and the cutoff energy, parameterized as Epeak, is 103 +/- 7 keV. The event fluence (10-1000 keV) in this time interval is (1.71 +/- 0.08)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+0.26 s in the 10-1000 keV band is 9.7 +/- 0.3 ph/s/cm^2. A Band function fits the spectrum equally well with Epeak = 102 +/- 10 keV, alpha = -0.68 +/- 0.15 and beta = -3.68 +/- 2.34. 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 38163 table
GRB_name	GRB241025C
GCN_number	38163
Detection_method	Fermi GBM Det
t_trigger	15:36:11.902 UTC
Circular_text	TITLE: GCN CIRCULAR NUMBER: 38163 SUBJECT: GRB 241025C: VZLUSAT-2 detection DATE: 24/11/11 10:34:54 GMT FROM: Marianna Dafčíková at Masaryk University <500025@mail.muni.cz> M. Dafcikova, J. Ripa (Masaryk U.), A. Pal (Konkoly Observatory), N. Werner (Masaryk U.), M. Ohno (Hiroshima U.), L. Meszaros, B. Csak (Konkoly Observatory), H. Takahashi (Hiroshima U.), F. Munz , M. Topinka, F. Hroch, N. Husarikova, J.-P. Breuer (Masaryk U.), J. Hudec, J. Kapus, M. Frajt, M. Rezenov (Spacemanic s.r.o), R. Laszlo (Needronix), G. Galgoczi (Wigner Research Center/Eotvos U.), N. Uchida (ISAS/JAXA), T. Enoto (Kyoto U.), Zs. Frei (Eotvos U.), Y. Fukazawa, K. Hirose, H. Matake (Hiroshima U.), S. Hisadomi (Nagoya U.), Y. Ichinohe (Rikkyo U.), L. L. Kiss (Konkoly Observatory), T. Mizuno (Hiroshima U.), K. Nakazawa (Nagoya U.), H. Odaka (Univ of Tokyo), K. Torigoe (Hiroshima U.), P. Svoboda, V. Daniel, J. Dudas, M. Junas, J. Gromes (VZLU), I. Vertat (FEL ZCU) -- the VZLUSAT-2/GRB payload collaboration. The short-duration GRB 241025C (Fermi/GBM detection: GCN 37887; Konus/Wind detection at 2024-10-25 15:36:11.902 UTC) was detected by the GRB detector on board of the VZLUSAT-2 3U CubeSat (https://www.vzlusat2.cz/en/). The data acquisition was performed by the GRB detector unit no. 1. The detection was confirmed at the peak time 2024-10-25 15:36:09 UTC. The T90 duration is 2 s and the significance during T90 reaches 7.9 sigma. The light curve obtained by VZLUSAT-2 is available here: https://vzlusat2.konkoly.hu/static/share/GRB241025C_GCN_VZLUSAT2.pdf All VZLUSAT-2 detections are listed at: https://monoceros.physics.muni.cz/hea/VZLUSAT-2/ The GRB detectors on VZLUSAT-2 are a demonstration payload for a future CubeSat constellation (Werner et al. Proc. SPIE 2018). Two GRB modules of VZLUSAT-2 are placed in a perpendicular manner and each consists of a 75 x 75 x 5 mm3 CsI scintillator read out by a SiPM array, covering the energy range from ~30 keV to ~1000 keV. VZLUSAT-2 was launched on 2022 January 13 from Cape Canaveral.