X-ray investigations of the hot ISM

Details X-ray investigations of the hot ISM X-ray investigations of the hot ISM

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13...77s&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 13, no. 12, p. (12)77-(12)82

Astronomy and Astrophysics

Astronomy

3

Background Radiation, Galactic Radiation, High Temperature Environments, Interstellar Matter, Supernova Remnants, X Ray Astronomy, Heao 1, Infrared Astronomy Satellite, Oao 3, Proportional Counters, Rosat Mission, Sas-3, X Ray Telescopes

Scientific paper

At energies less than one keV, the intensity of the galactic x-ray background dominates that of the extragalactic background in almost every direction on the sky. Below 1/4 keV, the galactic x-ray background has a galactic stellar component, but the dominant emitter seems to be hot interstellar matter. The origin of the general 3/4 keV x-ray background remains uncertain, but one component must also be the contribution from hot interstellar matter. An overview is given of recent x-ray investigations of the hot interstellar medium using data from the ROSAT X-ray Telescope/Position-Sensitive Proportional Counter (XRT/PSPC) instrument. Several prominent features in the low energy x-ray background that are interpreted as fossil supernova remnants are discussed.

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