High Resolution Spectroscopy of Hercules X-1

Details High Resolution Spectroscopy of Hercules X-1 High Resolution Spectroscopy of Hercules X-1

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..807s&link_type=abstract

Chandra Proposal ID #03400454

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Chandra Proposal Id #03400454

Scientific paper

We propose a set of high resolution spectral observations of the accreting pulsar X-ray binary Her X-1/HZ Her. A strong, pulsed, blackbody spectral component has been detected with a temperature of about 0.1 keV probably originating from X-ray reprocessing by the inner edge of the precessing accretion disk. Chandra LETGS observations can determine if emission lines from this component are present and if so use them to probe the physical conditions there. Observations with the HETGS will resolve the strong Fe K line and determine whether a mysterious large unresolved bump in the spectrum between 0.8 and 1.4 keV is due to a multi-temperature Fe L emission complex or involves other lines. The Main High state peak and flux decline and a Short High state will be surveyed.

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