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High ionisation absorption in low mass X-ray binaries

Journal
Date Issued
2016
Author(s)
•
Bianchi, S.
•
Muñoz-Darias, T.
•
De, K.
•
Fender, R.
•
Merloni, A.
DOI
Abstract
The advent of the new generation of X-ray telescopes yielded a significant step forward in our understanding of ionised absorption generated in the accretion discs of X-ray binaries. It has become evident that these relatively weak and narrow absorption features, sporadically present in the X-ray spectra of some systems, are actually the signature of equatorial outflows, which might carry away more matter than that being accreted. Therefore, they play a major role in the accretion phenomenon. These outflows (or ionised atmospheres) are ubiquitous during the softer states but absent during the power-law dominated, hard states, suggesting a strong link with the state of the inner accretion disc, presence of the radio-jet and the properties of the central source. Here, we discuss the current understanding of this field.
Volume
337
Issue
4-5
Start page
512
Uri
Url
Issn Identifier
0004-6337
Ads BibCode
2016AN....337..512P
Rights
open.access
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