Early Hard X-Rays from the Nearby Core-collapse Supernova SN 2023ixf

We present NuSTAR observations of the nearby SN 2023ixf in M101 ( d = 6.9 Mpc) that provide the earliest hard X-ray detection of a nonrelativistic stellar explosion to date at δ t ≈ 4 days and δ t ≈ 11 days. The spectra are well described by a hot thermal bremsstrahlung continuum with T > 25 keV...

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Bibliographic Details
Main Authors: Brian W. Grefenstette, Murray Brightman, Hannah P. Earnshaw, Fiona A. Harrison, R. Margutti
Format: Article
Language:English
Published: IOP Publishing 2023-01-01
Series:The Astrophysical Journal Letters
Subjects:
Online Access:https://doi.org/10.3847/2041-8213/acdf4e