Detailed Study of the Iron Line and Low Energy Features in Z and Atoll Sources

Details Detailed Study of the Iron Line and Low Energy Features in Z and Atoll Sources Detailed Study of the Iron Line and Low Energy Features in Z and Atoll Sources

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..584r&link_type=abstract

Chandra Proposal ID #02400625

Computer Science

Chandra Proposal Id #02400625

Scientific paper

We propose Chandra HETGS observations of the atoll source 4U 1705-44 and the Z source GX 340+0 for 30 ks each, to perform a detailed study of the iron Kalpha line, and the correlation between line parameters and kHz QPOs. These sources are known to show broad (˜ 1 keV FWHM) iron Kalpha lines: several hypothesis were proposed to explain their width (e.g. relativistic and Doppler effects in an accretion disk, Compton scattering, line-blending), and we expect that the high energy resolution (the highest in the iron line range) of the Chandra HETGS will be able to resolve the complex line shape and to constrain the various models proposed.

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