The 35-d X-ray profile of HER X-1

Details The 35-d X-ray profile of HER X-1 The 35-d X-ray profile of HER X-1

Oct 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976natur.263..484h&link_type=abstract

Nature, vol. 263, Oct. 7, 1976, p. 484, 485. Research supported by the University of Maryland.

Astronomy and Astrophysics

Astronomy

5

Eclipsing Binary Stars, Light Curve, Pulsars, X Ray Sources, Ariel Satellites, Data Acquisition, Radiant Flux Density, Satellite Observation, Spaceborne Astronomy, Uhuru Satellite

Scientific paper

Results of an analysis of more than 500 days of Ariel 5 All-Sky Monitor data are reported which support the view that enhanced X-ray emission from Her X-1 occurs regularly in the source's 35-day cycle. The data analyzed show that the enhancement is centered at phase 0.55 (+ or - 0.05) relative to the maximum, has an intensity of at least one-fourth of the maximum, and has an apparent duration not exceeding 10% of the 35-day cycle. It is strongly suggested that the enhancement occurs in every cycle at about one-third of the maximum.

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