Iron line diagnostics of X-ray binaries

Details Iron line diagnostics of X-ray binaries Iron line diagnostics of X-ray binaries

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..556...78d&link_type=abstract

EXPLOSIVE PHENOMENA IN ASTROPHYSICAL COMPACT OBJECTS: First KIAS Astrophysics Workshop. AIP Conference Proceedings, Volume 556,

Astronomy and Astrophysics

Astrophysics

X-Ray Binaries

Scientific paper

ASCA archive data of low-mass X-ray binaries are analyzed to study the characteristics of iron K emission lines. In total, 20 LMXBs are analyzed, which include various categories of sources, such as Z sources, atoll sources, bursters, dippers, accretion disc coronae sources, etc. We detected significant iron K emission lines from 10 sources; the line center is 6.56 keV on average with an equivalent width of <10-170 eV. The lines are found to be broad with a width of ~ 0.5 keV (FWHM). We discuss possible formation site of the iron emission lines. We conjecture that they may be formed through the recombination of the photo-ionized plasma located on the accretion disk. However, another mechanism, such as Compton scattering, need to be involved to explain the line width. .

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