Further Ariel V observations of Hercules X-1

Details Further Ariel V observations of Hercules X-1 Further Ariel V observations of Hercules X-1

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.192..311p&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 192, July 1980, p. 311-318. Research supported by the Radcliffe Trust.

Astronomy and Astrophysics

Astronomy

32

Ariel 5 Satellite, Astronomical Spectroscopy, Spaceborne Astronomy, Stellar Spectra, X Ray Stars, Light Curve, Neutron Stars, Stellar Mass Accretion, Stellar Models

Scientific paper

Detailed spectra obtained with the Ariel V satellite for the turn-on and off of Hercules X-1 from the extended low are presented. It is found that the obscuring region assumed responsible for the 35-day cycle lies well within any accretion disk surrounding the neutron star. This conflicts with some previous models of the system. A light curve of part of the secondary on-state is also presented and a new value of the pulse period derived.

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