High-energy X-ray observations of extragalactic objects

Details High-energy X-ray observations of extragalactic objects High-energy X-ray observations of extragalactic objects

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....94..234p&link_type=abstract

Astronomy and Astrophysics, vol. 94, no. 2, Feb. 1981, p. 234-237.

Astronomy and Astrophysics

Astronomy

28

Extragalactic Radio Sources, Radio Galaxies, X Ray Astronomy, Balloon Flight, Quasars, Seyfert Galaxies, Spectral Energy Distribution

Scientific paper

Balloon-borne telescope observations of extragalactic sources in the range 20-200 keV are reported. The detector consisted of a 766 sq cm phoswich array with a hexagonal field of view of 3 deg FWHM; the accuracy of source tracking was 0.1 deg. X-ray spectra are presented for 3C 273 and Cen-A as well as upper limits on 3C 120, MKN 509, NGC 5506, and MR 2251-178.

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