ROSAT and ASCA Observations of NGC 1313 and SN1978k

Details ROSAT and ASCA Observations of NGC 1313 and SN1978k ROSAT and ASCA Observations of NGC 1313 and SN1978k

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...184.4815p&link_type=abstract

American Astronomical Society, 184th AAS Meeting, #48.15; Bulletin of the American Astronomical Society, Vol. 26, p.940

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Scientific paper

NGC 1313 is a nearby (d = 4.5 Mpc) spiral galaxy, whose X-ray emission is dominated by three point sources with log (Lx) > 39. One of these sources is near, but not at, the optical nucleus; a second is 8 kpc distant from the nucleus, in an outer region of the galaxy; and the third is SN1978k, the first supernova identified as such on the basis of its X-ray emission. NGC 1313 has been the subject of a series of X-ray observations, including two using the ROSAT PSPC (April-May, 1991, and November, 1993) and ASCA during PV phase (July, 1993). We discuss the results of a combined analysis of these observations, which suggest that the luminosity and spectrum of SN1978k has not varied since its discovery, and reveal the presence of a number of additional sources of X-rays, including diffuse emission from the ISM surrounding the nucleus. Possible interpretations of the emission from SN1978k and the other two luminous sources are presented.

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