Year: 2008
Type: conference-paper
Abstract: Quantitative constraints on the wind clumping of massive stars can be obtained from the study of the hard X‐ray variability of SFXTs. In these systems, a large fraction of the hard X‐ray emission is emitted in the form of flares with typical duration of 3 ksec, frequency of 7 days and luminosity of 1036 ergs/s. Such flares are most probably emitted by the interaction of a compact object orbiting at ∼10 R* with wind clumps (1022–23 g). The density ratio between the clumps and the inter‐clump medium is 102–4. The parameters of the clumps and of the inter‐clump medium are in good agreement with macro‐clumping scenario and line‐driven instability simulations.
Source: AIP conference proceedings
DOI: 10.1063/1.2945056
Authors: R. Walter, J. Zurita-Heras, Reba M. Bandyopadhyay, Stefanie Wachter, Dawn Gelino, Christopher R. Gelino
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1480106530
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