SRG/ART-XC detects SN2024ggi in X-rays
ATel #16586; A. A. Lutovinov, A. N. Semena, I. A. Mereminskiy, S. Yu. Sazonov, S. V. Molkov, A. Yu. Tkachenko, V. A. Arefiev (IKI RAS, Moscow)
on 13 Apr 2024; 21:39 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Sergei Molkov (molkov@hea.iki.rssi.ru)
Subjects: X-ray, Supernovae, Transient
We report the detection of X-ray emission from the supernova SN2024ggi with the Mikhail Pavlinsky ART-XC telescope on board the SRG observatory.
The supernova SN2024ggi was discovered with the ATLAS instrument (J. Tonry et al., 2024TNSTR1020....1T) on April 11, 2024 and classified as a Type II event (Qian Zha et al., 2024TNSCR1031....1Z) in the nearby galaxy NGC3621 (distance of 6.64 Mpc).
Following these reports, the observational program of SRG/ART-XC was immediately changed and the position of SN2024ggi was observed from April 12, 2024 23:06 until April 13, 2024 14:27 (UTC), with a total exposure of ~55 ks.
The ART-XC telescope confidently detects a point source at the location of SN2024ggi with the fluxes of (3.0+/-0.3)e-13 and (1.9+/-0.5)e-13 erg cm-2 s-1 in the 4-12 and 12-20 keV energy bands, respectively.
The ART-XC team plans to continue observations of SN2024ggi in the coming days.
