The Origin of Soft X-Rays in DQ Herculis

Details The Origin of Soft X-Rays in DQ Herculis The Origin of Soft X-Rays in DQ Herculis

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..568m&link_type=abstract

Chandra Proposal ID #02300482

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Chandra Proposal Id #02300482

Scientific paper

DQ Herculis (Nova Her 1934) has been found to be a weak soft X-ray source, even though the accretion disk is thought to block our line of sight to the white dwarf primary at all orbital phases. The observed luminosity is an order of magnitude higher than that expected of the secondary. What, then, is the origin of these X-rays? One possibility is resonant scattering of a hidden X-ray source by the accretion disk wind. Another is that the nova shell around DQ Her has now become an X-ray source, as the ejecta plough into the surrouding interstellar medium. We propose Chandra imaging to distinguish between these possibilities, and use timing and spectral information to constrain the model further.

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