Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-24T00:41:34.309Z Has data issue: false hasContentIssue false
  • English
  • Français

Steady models of optically thin, magnetically supported two-temperature accretion disks around a black hole

Published online by Cambridge University Press:  01 August 2006

H. Oda ,
K. E. Nakamura ,
M. Machida  and
R. Matsumoto
H. Oda
Affiliation:
Graduate School of Science and Technology, Chiba University, 1-33 Yayoi-Cho, Inage-ku, Chiba 263-8522, Japan email: [email protected]
K. E. Nakamura
Affiliation:
Department of Sciences, Matsue National College of Technology, 14-4 Nishiikuma-Cho, Matsue, Shimane 690-8518, [email protected]
M. Machida
Affiliation:
Division of Theoretical Astronomy, National Astronomical Observatory ofJapan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, [email protected]
R. Matsumoto
Affiliation:
Department of Physics, Faculty of Science, Chiba University, 1-33 Yayoi-Cho, Inage-ku, Chiba 263-8522, [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We obtained steady solutions of optically thin two-temperature magnetized accretion disks around a black hole. We included relativistic bremsstrahlung cooling, synchrotron cooling and inverse Compton effects and assumed that the disk is threaded by toroidal magnetic field. We found that a magnetic pressure dominated new branch, which we call a ‘low-β branch’, appears in the thermal equilibrium curves. The luminosity of the optically thin, magnetically supported disk can exceed 10% of the Eddington luminosity (0.1 LEdd).

Keywords

Accretion: accretion disks – black holes – state transitions – MHD
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S238: Black Holes from Stars to Galaxies – Across the Range of Masses , August 2006 , pp. 421 - 422
Copyright
Copyright © International Astronomical Union 2007

References

Abramowicz, M. A., Chen, X., Kato, S., Lasota, J.-P. & Regev, O. 1995, ApJ, 438, L37CrossRefGoogle Scholar
Gierliński, M. & Newton, J. 2006, MNRAS, 370, 837CrossRefGoogle Scholar
Hirose, S., Krolik, J. H. & Stone, J. M. 2006, ApJ, 640, 901CrossRefGoogle Scholar
Kato, S., Fukue, J. & Mineshige, S. 1998, Black hole accretion disks (Kyoto: Kyoto University Press)Google Scholar
Machida, M., Nakamura, K. E. & Matsumoto, R. 2006, PASJ, 58, 193CrossRefGoogle Scholar
Paczyńsky, B. & Wiita, P. J. 1980, A&A, 88, 23Google Scholar