Iron Line Variability of Discoseismic Corrugation Modes
- Creators
- Tsang, David
- Butsky, Iryna
Abstract
Using a fast semi-analytic raytracing code, we study the variability of relativistically broadened Fe–Kα lines due to discoseismic oscillations concentrated in the innermost regions of accretion discs around black holes. The corrugation mode, or c-mode, is of particular interest as its natural frequency corresponds well to the ∼0.1–15 Hz range observed for low-frequency quasi-periodic oscillations (LFQPOs) for lower spins. Comparison of the oscillation phase dependent variability and quasi-periodic oscillation-phase stacked Fe–Kα line observations will allow such discoseismic models to be confirmed or ruled out as a source of particular LFQPOs. The spectral range and frequency of the variability of the Fe–Kα line due to c-modes can also potentially be used to constrain the black hole spin if observed with sufficient temporal and spectral resolution.
Additional Information
© 2013 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society Accepted 2013 July 18. Received 2013 June 14; in original form 2013 January 17. First published online: August 16, 2013. DT was supported at Caltech by the Sherman Fairchild Foundation and at McGill through funding from the Canadian Institute for Advanced Research and the Lorne Trottier Chair in Astrophysics and Cosmology. IB conducted this research as part of a Summer Undergraduate Research Fellowship, and was supported by NASA ATP grant no. NNX11AC37G, NSF grant no. PHY-1151197, the David and Lucile Packard Foundation, the Alfred P. Sloan Foundation, Mrs Albert Burford and the Sherman Fairchild Foundation. DT would like to acknowledge helpful discussion and useful advice from Sterl Phinney, Peter Goldreich, Christian Ott, Chris Hirata, Dong Lai, Marc Favata, Anil Zenigoulu, Chad Galley and Andrew Cumming.Attached Files
Published - MNRAS-2013-Tsang-749-65.pdf
Submitted - 1307.4971v1.pdf
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Additional details
- Eprint ID
- 39751
- Resolver ID
- CaltechAUTHORS:20130805-080029527
- Sherman Fairchild Foundation
- Canadian Institute for Advanced Research (CIAR)
- Lorne Trottier Chair in Astrophysics and Cosmology
- NNX11AC37G
- NASA ATP
- PHY-1151197
- NSF
- David and Lucile Packard Foundation
- Alfred P. Sloan Foundation
- Created
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2013-08-12Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field
- Caltech groups
- TAPIR