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The X-ray properties of normal galaxies. What do we know and what can we learn with the next generation of X-ray telescopes?Einstein Observatory results are used to assess the possibilities of spaceborne X-ray astronomy projects such as XMM (ESA) and AXAF (NASA). Einstein observations show that normal galaxies of all morphological types are spatially extended sources of X-ray emission with 0.5 to 3.0 keV X-ray luminosities of 10 to the 39th to 41st power erg/sec. X-ray telescopes can study the end products of stellar evolution in galaxies of different morphological types. Phenomena linked to starburst nuclear activity can best be detected and studied in X-ray. Hot coronae or a hot phase of the interstellar medium can only be studied through their X-ray emission. It is shown that high spatial resolution is essential for studying normal galaxies and identifying different emission regions. Good spectral sensitivity and spectral imaging capability are essential for gaining a deeper understanding of the phenomena at work.
Document ID
19860012995
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Fabbiano, G.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 12, 2013
Publication Date
September 1, 1985
Publication Information
Publication: ESA Proceedings of ESA Workshop on a Cosmic X-Ray Spectroscopy Mission
Subject Category
Astronomy
Accession Number
86N22466
Funding Number(s)
CONTRACT_GRANT: NAS8-30751
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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