Source content of a deep pointed ROSAT observation at very low NH

Details Source content of a deep pointed ROSAT observation at very low NH Source content of a deep pointed ROSAT observation at very low NH

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992xrea.conf..220l&link_type=abstract

In MPI für Extraterristrische Physik, X Ray Emission from Active Galactic Nuclei and the Cosmic X Ray Background p 220-223 (SEE

Astronomy and Astrophysics

Astronomy

1

Identifying, Quasars, Rosat Mission, Spectral Energy Distribution, Spectrum Analysis, X Ray Sources, Active Galactic Nuclei, Astronomical Catalogs, Proportional Counters, X Ray Astronomy, X Ray Density Measurement

Scientific paper

Thirty five x-ray sources were detected in a 6.4 ksec Rosat Position Sensitive Proportional Counter (PSPC) exposure pointed at the quasar PKS 0135-247. The field lies at high galactic latitude with galactic NH of 1.4 times 10 to the 20th power/sq cm. Twenty six serendipitous sources were detected with a significance greater than 5 sigma. An attempt was made to identify these sources with entries of optical, radio, and x-ray catalog and to search for optical counterparts in the ESO R and SRC J plates. X-ray spectral slopes and fx/fopt values were calculated from detected count rates and hardness ratios. Spectral fits of the five brightness sources could be obtained.

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