GCN Circular 38997
Subject
GRB 250119B: INTEGRAL/SPI-ACS detection
Event
Date
2025-01-20T11:35:31Z (9 months ago)
Edited On
2025-01-22T14:08:00Z (9 months ago)
From
Aishwarya L Thakur at INAF-IAPS, Rome <aishth@outlook.com>
Edited By
Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Aishwarya L Thakur at INAF-IAPS, Rome <aishth@outlook.com>
Via
Web form
Patrizia Barria(a,b), Giulia Gianfagna(a), James Craig Rodi(a), Aishwarya Linesh Thakur(a), Luigi Piro(a), Lorenzo Natalucci(a,b) report:
GRB 250119B was discovered by Fermi/GBM (GCN 38979, 38980) at time 2025-01-19T08:27:01 (UTC). We searched for any corresponding counterpart in the INTEGRAL/SPI-ACS data.
In a SPI-ACS light curve above 80 keV we find a signal temporally coincident with the GBM detection having an approximate duration of ~ 60 sec.The signal consists of several pulses over this duration.
The approximate peak count rate in SPI-ACS is 90,000 cts/s for E>80 keV, over a median background rate of 65,400 cts/s.
This work is based on observations with INTEGRAL, an ESA project with instruments and a science data centre funded by ESA member states (especially the PI countries: Denmark, France, Germany, Italy, Switzerland, and Spain), and with the participation of Russia and the USA. The SPI-ACS detector system has been provided by MPE Garching/Germany.
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(a) INAF/IAPS-Rome
(b) ICSC National Research Centre for High-Performance Computing