Abstract
view Abstract Citations (10) References (11) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS X-ray observations of the Cygnus A region with ANS. Brinkman, A. C. ; Heise, J. ; den Boggende, A. J. F. ; Grindlay, J. ; Gursky, H. ; Parsignault, D. Abstract X-ray observations of 3U 1957+40 (Cyg A region) by the two instruments on board ANS are reported. The intensity recorded by the Utrecht instrument (SXX) is consistent with the Uhuru strength. The spectrum and intensity also agree with results from the Copernicus satellite observations. However, no measurable flux was recorded by the Cambridge instrument (HXX) in the same energy range as SXX but with a smaller field of view. Thus if 3U 1957+40 is a point source, its declination is not within 6 arcmin of Cyg A. Alternatively, the emission region may be extended and originate in the cluster of galaxies near Cyg A. Publication: The Astrophysical Journal Pub Date: May 1977 DOI: 10.1086/155227 Bibcode: 1977ApJ...214...35B Keywords: Radio Sources (Astronomy); Spaceborne Astronomy; X Ray Astronomy; Astronomical Maps; Astronomical Netherlands Satellite; Extragalactic Radio Sources; Galactic Clusters; Galactic Radiation; Satellite Observation; Astronomy full text sources ADS | data products SIMBAD (2) NED (1)
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