EXOSAT observations of the iron line emission of HER X-1 during a 35 day cycle

Details EXOSAT observations of the iron line emission of HER X-1 during a 35 day cycle EXOSAT observations of the iron line emission of HER X-1 during a 35 day cycle

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ssrv...40..355k&link_type=abstract

(ESA, ESLAB Symposium on X-Ray Astronomy in the EXOSAT Era, 18th, The Hague, Netherlands, Nov. 5-9, 1984) Space Science Reviews

Astronomy and Astrophysics

Astronomy

4

Exosat Satellite, Iron, Stellar Rotation, Stellar Spectrophotometry, X Ray Binaries, Accretion Disks, Emission Spectra, Line Spectra, Magnetohydrodynamic Waves, Spaceborne Astronomy, Spectral Line Width, Spectrum Analysis, Stellar Coronas

Scientific paper

In March/April 1984 eleven EXOSAT observations of Her X-1 were performed sampling a full 35 day cycle. Spectral analysis of the ME and GSPC data shows that the iron line emission is present during all phases. The authors report for the first time on the detection of an iron line during the intermediate-on state with about the same parameters as the main-on state line but an equivalent width a factor of 2 larger. They discuss the Alfvén region and a hot corona at the inner region of the accretion disk as the possible sites of the line production.

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