X-ray-luminous radio supernovae in the centre of M82?

Autor:	K. A. Wills, David K. Strickland, Ian R. Stevens
Rok vydání:	1999
Předmět:	Physics Luminous infrared galaxy Supernova Active galactic nucleus X-shaped radio galaxy Space and Planetary Science Point source Radio galaxy ROSAT Astronomy Astronomy and Astrophysics Astrophysics Galaxy
Zdroj:	Monthly Notices of the Royal Astronomical Society. 308:L23-L27
ISSN:	1365-2966 0035-8711
DOI:	10.1046/j.1365-8711.1999.02958.x
Popis:	We investigate the X-ray emission from the central regions of the prototypical starburst galaxy M82. Previous observations have shown a bright central X-ray point source, with suggestions as to its nature including a low-luminosity active galactic nucleus or an X-ray binary. A new analysis of ROSAT HRI observations finds four X-ray point sources in the central kiloparsec of M82, and we identify radio counterparts for the two brightest X-ray sources. The counterparts are probably young radio supernovae (SNe) and are amongst the most luminous and youthful SNe in M82. We therefore suggest that we are seeing X-ray emission from young SNe in M82, and in particular that the brightest X-ray source is associated with the radio source 41.95+57.5. We discuss the implications of these observations for the evolution of X-ray-luminous SNe.
Databáze:	OpenAIRE
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