X-ray surveys with the Einstein Observatory.

Details X-ray surveys with the Einstein Observatory. X-ray surveys with the Einstein Observatory.

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981msngr..26....5d&link_type=abstract

The Messenger, vol. 26, p. 5-6

Astronomy and Astrophysics

Astronomy

Uv Sources, X-Ray Sources, X-Ray Background

Scientific paper

Two different types of survey with the imaging instruments included in the Einstein Observatory are yielding results of particular interest in extragalactic astronomy and cosmology. The first is known as a "deep field" survey, and we will describe here the results for an observed region in Pavo. The second type is the "medium sensitivity survey" which attempts to identify a complete sampie of faint X-ray sources (energy 10-11.5to 10-13 ergs cm-2 S-1 in the 0.3-3.5 keV soft X-ray band) detected in the fields of previously known or studied X-ray sources. At present, the "medium sensitivity survey" is still being worked on and results are very preliminary.

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