Abstract
In this paper, we employ a stochastic oscillating accretion disk model for the power spectral index and variability of BL Lac object S5 0716+714. In the model, we assume that there is a relativistic oscillation of thin accretion disks and it interacts with an external thermal bath through a friction force and a random force. We simulate the light curve and the power spectrum density (PSD) at (i) over-damped, (ii) critically damped and (iii) under-damped cases, respectively. Our results show that the simulated PSD curves depend on the intrinsic property of the accretion disk, and it could be produced in a wide interval ranging from 0.94 to 2.05 by changing the friction coefficient in a stochastic oscillating accretion disk model. We argue that accretion disk stochastic oscillating could be a possible interpretation for observed PSD variability.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Azarnia, G. M., Webb, J. R. Pollock, J. T. 2005, I.A.P.P.P. Communications, 101, 1.
Bach, U., Krichbaum, T. P., Bernhart, S. et al. 2009, Astrophys. Tech., 402, 252.
Blaes, O. M., Arras, P. Fragile, P. C. 2006, Mon. Not. R. Astron. Soc., 369, 1235.
Carini, M. T., Walters, R. Hopper, L. 2011, Astrophys. J., 141, 49.
Dennett-Thorpe, J. de Bruyn, A. G. 2003, Astron. Astrophys., 404, 113.
Dexter, J. Agol, E. 2011, Astrophys. J. L., 727, L24.
Fan, J. H., Tao, J., Qian, B. C. et al. 2011, Res. Astron. Astrophys., 11, 1311.
Gabányi, K. é., Marchili, N., Krichbaum, T. P. et al. 2007, Astron. Nachr., 328, 863.
Hagen-Thorn, V. A., Larionov, V. M., Jorstad, S. G. et al. 2008, Astrophys. J., 672, 40.
Harko, T. Mocanu, G. R. 2012, Mon. Not. R. Astron. Soc., 421, 3102.
Jauncey, D. L. Macquart, J. P. 2001, Astron. Astrophys., 370, L9.
Kato, S. 2001, Publ. Astron. Soc. Jpn., 53, 1.
Leung, C. S., Wei, J. Y., Harko, T. et al. 2011a, J. Astrophys. Astr., 32, 189.
Leung, C. S., Wei, J. Y., Kovacs, Z. et al. 2011b, Res. Astron. Astrophys., 11, 1031.
Liu, X., Li, Q., Krichbaum, T. P. et al. 2013, Astrophys. Space. Sci., 346, 15.
Lobanov, A. P. Zensus, J. A. 1999, Astrophys. J., 521, 509.
Marchili, N., Krichbaum, T. P., Liu, X. et al. 2012, Astron. Astrophys., 542, 121.
Mocanu, G. R. Marcu, A. 2012, Astron. Nachr., 333, 166.
O’Neill, S. M., Reynolds, C. S. Miller, M. C. 2009, Astrophys. J., 693, 1100.
Poon, H., Fan, J. H. Fu, J. N. 2009, Astrophys. J. Suppl. Ser., 185, 511.
Qian, S. J. Zhang, X. Z. 2001, Chin. J. Astron. Astrophys., 1, 133.
Rickett, B. J., Witzel, A., Kraus, A. et al. 2001, Astrophys. J., 550, L11.
Shakura, N. I. Sunyaev, R. A. 1973, Astron. Astrophys., 24, 337.
Shi, C. S. Li, X. D. 2010, Astrophys. J., 714, 1227.
Titarchuk, L. Osherovich, V. 2000, Astrophys. J., 542, L111.
Wang, Z. Y., Chen, P. J., Wang, D. X. et al. 2013, J. Astrophys. Astr., 34, 33.
Wang, Z. Y., Chen, P. J. Zhang, L. Y. 2015, Chin. Phys. B, 24, 059801.
Zanotti, O, Font, J. A., Rezzolla, L. et al. 2005, Mon. Not. R. Astron. Soc., 356, 1371.
Acknowledgements
The authors thank the anonymous referee for valuable comments and suggestions. This work is partially supported by the National Natural Science Foundation of China under grants 11463007, U1231203, Science and Technology in support of Yunnan Province Talent under grants 2012HB014, and the Natural Science Foundation of Yunnan Province under grants 2013FD014. This work is also supported by the Science Foundation of Yunnan Educational Department (grant 2012Z016).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Long, G.B., Ou, J.W. & Zheng, Y.G. Power Spectrum Density of Stochastic Oscillating Accretion Disk. J Astrophys Astron 37, 10 (2016). https://doi.org/10.1007/s12036-016-9372-2
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s12036-016-9372-2