GeV light curves of young supernova remnants
O. Petruk, V. Beshley, V. Marchenko, M. Patrii
TL;DR
This study analyzes Fermi Gamma-ray data to investigate flux variations in young supernova remnants, finding steady GeV emissions in some, with non-detections in others, contributing to understanding their gamma-ray behavior.
Contribution
It provides a uniform analysis of gamma-ray light curves for multiple young supernova remnants, highlighting their flux stability or variability over ten years.
Findings
Cas A and Tycho show steady GeV fluxes.
G1.9+0.3 and Kepler are not detected.
SN1006 and SN1987A results are less certain.
Abstract
Observational data from the Fermi Gamma-ray Space Telescope are analyzed with a goal in mind to look for variations in gamma-ray flux from young shell-like supernova remnants. Uniform methodological approach is adopted for all SNRs considered. G1.9+0.3 and Kepler SNRs are not detected. The light curves of Cas~A and Tycho SNRs are compatible with the steady GeV flux during the recent ten years, as also X-ray and radio fluxes. Less confident results on SN1006 and SN1987A are discussed.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Gamma-ray bursts and supernovae · Radio Astronomy Observations and Technology