Resolving the Soft Excess in 4u 1850-087

Details Resolving the Soft Excess in 4u 1850-087 Resolving the Soft Excess in 4u 1850-087

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..823c&link_type=abstract

Chandra Proposal ID #03400979

Physics

Chandra Proposal Id #03400979

Scientific paper

A soft excess near 0.7 keV, consistent with unresolved emission lines, has been previously reported in several LMXBs. Our recent reanalysis of archival ASCA and BeppoSAX data shows that this excess can also be explained by photoelectric absorption by material with non-solar abundance, or by a failure to account for the thermodynamically required turnover of the power law continuum at low energies. We propose an ACIS-S/LETGS observation of the soft excess source 4U 1850-087 in order to discriminate between these alternatives.

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