15–19 Sept 2025
Cefalù (Palermo)
Europe/Rome timezone

High-density reflection spectroscopy of black X-ray binaries and its implication of accretion geometry

Not scheduled
2m
Palazzo Municipale - Sala delle Capriate (Cefalù (Palermo))

Palazzo Municipale - Sala delle Capriate

Cefalù (Palermo)

Cefalù (Palermo)
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Speaker

Dr Honghui Liu (Institute for Astronomy and Astrophysics, University of Tuebingen)

Description

X-ray reflection spectroscopy is a powerful tool to study the accretion geometry near black holes and spacetime properties. The spirit of this method is to study the reprocessed corona emission by the cold accretion disk that extends close to the black hole. Previous X-ray reflection models consider a disk density of 10^-15 cm^-3, which is only appropriate for very massive black holes (> 10^7 M_Sun). In this talk, I will present a systematic study of high-density reflection effects for black hole XRBs. The study also provides insights into their accretion geometry in the bright hard and intermediate states.

Affiliation Institute for Astronomy and Astrophysics, University of Tuebingen
E-mail honghui.liu@astro.uni-tuebingen.de

Author

Dr Honghui Liu (Institute for Astronomy and Astrophysics, University of Tuebingen)

Co-authors

Adam Ingram (University of Oxford) Andrew Fabian Prof. Cosimo Bambi (Fudan University) Dominic Walton (University of Cambridge) Javier Garcia (Caltech) Dr Jiachen Jiang (University of Warwick) John A. Tomsick (UC Berkeley)

Presentation materials

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