A study of M100 in X-rays

Details A study of M100 in X-rays A study of M100 in X-rays

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ssrv...30..143p&link_type=abstract

(European Space Agency, ESLAB Symposium on X-ray Astronomy, 15th, Amsterdam, Netherlands, June 22-26, 1981.) Space Science Revie

Astronomy and Astrophysics

Astronomy

1

Early Stars, Galactic Radiation, Point Sources, Spiral Galaxies, Supernova Remnants, X Ray Sources, Active Galaxies, Galactic Bulge, Heao 2, Luminosity, Proportional Counters, Stellar Evolution, X Ray Astronomy

Scientific paper

M100 (NGC 4321) was repeatedly observed with the IPC and HRI instruments on the Einstein Observatory. The X-ray data reveal two possible sources in the arms of the spiral galaxy, two components in the nuclear bulge, and extended X-ray emission from the central part of the galaxy (160 x 160 arcsec centered on the nucleus). It is found that the extended X-ray emission cannot be explained in terms of the inverse Compton effect on radio, optical, or 3-K blackbody photons, but is likely to originate from supernova remnants and/or early type stars. As for M100 as a whole, the X-ray to optical luminosity ratio places it midway between normal galaxies (e.g., M31 or M33) and peculiar or active galaxies.

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