Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13..171p&link_type=abstract
Advances in Space Research (ISSN 0273-1177), vol. 13, no. 12, p. (12)171-(12)180
Astronomy and Astrophysics
Astronomy
9
Andromeda Galaxy, High Temperature Gases, Local Group (Astronomy), Magellanic Clouds, Pulsars, Sky Surveys (Astronomy), Starburst Galaxies, X Ray Astronomy, Astronomical Catalogs, Galactic Halos, Heao 2, Light Curve, Proportional Counters, Rosat Mission, X Ray Imagery
Scientific paper
First results of pointed and All Sky Survey observations of galaxies with the X-ray observatory satellite ROSAT are reported. During observations of the Magellanic Clouds and the Andromeda galaxy new super-soft X-ray sources have been detected. This new class of luminous X-ray sources may help to solve the millisecond pulsar progenitor problem. Due to the improved sensitivity and longer observation times of ROSAT new X-ray point sources have been resolved in several nearby galaxies. The diffuse emission of the Large Magellanic Cloud that was already reported by HEAO 2 (EINSTEIN) has been mapped in detail. It shows a lot of fine structure and temperatures around 5 x 106 K. The improved low energy response of ROSAT led to the discovery of 106 K gas from the spiral galaxy M101 and the halo of the starburst galaxy NGC 253. No diffuse emission was detected from the halo of the edge-on spiral galaxy NGC 5907.
Pietsch Wolfgang
Truemper Joachim
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