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Geometry of the X-ray source 1H 0707–495

Szanecki, Michał; Niedźwiecki, Andrzej; Done, Chris; Klepczarek, Łukasz; Lubiński, Piotr; Mizumoto, Misaki

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Authors

Michał Szanecki

Andrzej Niedźwiecki

Łukasz Klepczarek

Piotr Lubiński



Contributors

Abstract

Aims. We investigate the constraints on the size and location of the X-ray source in 1H 0707–495 determined from the shape of the relativistically smeared reflection from the accretion disc. Methods. We developed a new code to model an extended X-ray source and we applied this code to all archival XMM observations of 1H 0707–495. Results. In contrast to earlier works we find that the relativistic reflection in this source is not consistent with an extended uniform corona. Instead, we find that the X-ray source must be very compact, at most a gravitational radius in size, and located at most a few gravitational radii from the black-hole horizon. A uniform extended corona produces an emissivity that is similar to a twice-broken power-law, but the inner emissivity is fixed by the source geometry rather than being a free parameter. In 1H0707–495, the reflection from the inner disc is much stronger than expected for a uniformly extended source. Including the effect of ionised absorption from the wind does not change this conclusion, but including scattered emission (and more complex absorption) from the wind can dramatically change the reflection parameters.

Citation

Szanecki, M., Niedźwiecki, A., Done, C., Klepczarek, Ł., Lubiński, P., & Mizumoto, M. (2020). Geometry of the X-ray source 1H 0707–495. Astronomy & Astrophysics, 641, Article A89. https://doi.org/10.1051/0004-6361/202038303

Journal Article Type Article
Acceptance Date Jun 29, 2020
Online Publication Date Sep 11, 2020
Publication Date 2020-09
Deposit Date Oct 14, 2020
Publicly Available Date Oct 14, 2020
Journal Astronomy and astrophysics.
Print ISSN 0004-6361
Electronic ISSN 1432-0746
Publisher EDP Sciences
Peer Reviewed Peer Reviewed
Volume 641
Article Number A89
DOI https://doi.org/10.1051/0004-6361/202038303
Public URL https://durham-repository.worktribe.com/output/1254141

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Copyright Statement
Szanecki, Michał, Niedźwiecki, Andrzej, Done, Chris, Klepczarek, Łukasz, Lubiński, Piotr & Mizumoto, Misaki (2020). Geometry of the X-ray source 1H 0707–495. Astronomy & Astrophysics 641: A89, reproduced with permission, © ESO.






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