Plasma and Fusion Research
Volume 4, 017 (2009)
Review Articles
- School of Physics, University of Sydney, NSW 2006, Australia
- 1)
- Research Centre for Astronomy and Astrophysics, Australian National University, ACT 2611, Australia
Abstract
Astrophysical accretion is arguably the most prevalent physical process in the Universe; it occurs during the birth and death of individual stars and plays a pivotal role in the evolution of entire galaxies. Accretion onto a black hole, in particular, is also the most efficient mechanism known in nature, converting up to 40% of accreting rest mass energy into spectacular forms such as high-energy (X-ray and gamma-ray) emission and relativistic jets. Whilst magnetic fields are thought to be ultimately responsible for these phenomena, our understanding of the microphysics of MHD turbulence in accretion flows as well as large-scale MHD outflows remains far from complete. We present a new theoretical model for astrophysical disk accretion which considers enhanced vertical transport of momentum and energy by MHD winds and jets, as well as transport resulting from MHD turbulence. We also describe new global, 3D simulations that we are currently developing to investigate the extent to which non-ideal MHD effects may explain how small-scale, turbulent fields (generated by the magnetorotational instability — MRI) might evolve into large-scale, ordered fields that produce a magnetized corona and/or jets where the highest energy phenomena necessarily originate.
Keywords
astrophysical accretion disk, active galactic nucleus, X-ray binary, MHD (magnetohydrodynamics), numerical simulation
Full Text
References
- [1] N.I. Shakura and R.A. Sunyaev, Astron. Astrophys. 24, 337 (1973).
- [2] I.D. Novikov and K.S. Thorne, in Black Holes, C. DeWitt & B. DeWitt (New York, Gordon and Breach, 1973) p.343.
- [3] E.P. Velikhov, J. Exp. Theor. Phys. (USSR) 36, 1398 (1959).
- [4] S. Chandrasekhar, Proc. Natl. Acad. Sci. USA 46, 253 (1960).
- [5] S.A. Balbus and J.F. Hawley, Astrophys. J. 376, 214 (1991).
- [6] S.A. Balbus and J.F. Hawley, Rev. Mod. Phys. 70, 1 (1998).
- [7] S.A. Balbus, ARAA 41, 555 (2003).
- [8] H. Ji, M. Burin, E. Schartman and J. Goodman, Nature 444, 343 (2006).
- [9] Y. Uchida and K. Shibata, PASJ 37, 515 (1985).
- [10] K. Shibata and Y. Uchida, PASJ 38, 631 (1986).
- [11] J.F. Hawley, S.A. Balbus and J.M. Stone, Astrophys. J. 554, L49 (2001).
- [12] A. Steinacker and T. Henning, Astrophys. J. 554, 514 (2001).
- [13] J.M. Stone and J.E. Pringle, Mon. Not. R. Astron. Soc. 322, 461 (2001).
- [14] J.F. Hawley and S.A. Balbus, Astrophys. J. 573, 738 (2002).
- [15] A. Steinacker and J.C.B. Papaloizou, Astrophys. J. 571, 413 (2002).
- [16] Y. Kato, S. Mineshige and K. Shibata, Astrophys. J. 605, 307 (2004).
- [17] H. Kigure and K. Shibata, Astrophys. J. 634, 879 (2005).
- [18] J.C. McKinney, Mon. Not. R. Astron. Soc. 368, 1561 (2006).
- [19] M. Machida and R. Matsumoto, PASJ 60, 613 (2008).
- [20] E.J.D. Jolley and Z. Kuncic, Astrophys. Space Sci. 311, 257 (2007).
- [21] M. Livio, Phys. Rep. 311, 255 (1999).
- [22] R. Fender, K. Wu, H. Johnston, T. Tzioumis, P. Jonker, R. Spencer and M. van der Klis, Nature 427, 222 (2004).
- [23] R.E. Pudritz, R. Ouyed, C. Fendt and A. Brandenburg, in Protostars and Planets V, ed. B. Reipurth, D. Jewitt & K. Keil (Tucson, University Arizona Press, 2006) p.277.
- [24] R.D. Blandford and D.G. Payne, Mon. Not. R. Astron. Soc. 199, 883 (1982).
- [25] R.E. Pudritz and C.A. Norman, Astrophys. J. 274, 677 (1983).
- [26] R. Salmeron, A. Konigl and M. Wardle, Mon. Not. R. Astron. Soc. 375, 177 (2007).
- [27] K. Beckwith, J.F. Hawley and J.H. Krolik, Astrophys. J. 678, 1180 (2008).
- [28] M. Christensson, M. Hindmarsh and A. Brandenburg, Phys. Rev. E 64, 056405-1 (2001).
- [29] C.A. Tout and J.E. Pringle, Mon. Not. R. Astron. Soc. 281, 219 (1996).
- [30] R.V.E. Lovelace, M.M. Romanova and G.S. Bisnovatyi-Kogan, Mon. Not. R. Astron. Soc. 275, 244 (1995).
- [31] M.R. Hayashi, K. Shibata and Matsumoto, Astrophys. J. 468, L37 (1996).
- [32] M.M. Romanova, G.V. Ustyugova, A.V. Koldoba, V.M. Chechetkin and R.V.E. Lovelace, Astrophys. J. 500, 703 (1998).
- [33] J.C. McKinney and R.D. Blandford, to be published in Mon. Not. R. Astron. Soc. [arXiv:0812.1060] (2009).
- [34] M. Machida, K.E. Nakamura and R. Matsumoto, PASJ 58, 193 (2006).
- [35] O. Regev and O.M. Umurhan, Astron. Astrophys. 481, 21 (2008).
- [36] G. Bodo, A. Mignone, F. Cattaneo, P. Rossi and A. Ferrari, Astron. Astrophys. 487, 1 (2008).
- [37] J.C. Hayes, M.L. Norman, R.A. Fiedler, J.O. Bordner, P.S. Li, S.E. Clark, A. ud-Doula and M.M. Mac Low, Astrophys. J. S 165, 188 (2006).
- [38] B. Fryxell, K. Olson, P. Ricker, F.X. Timmes, M. Zingale, D.Q. Lamb, P. MacNeice, R. Rosner, J.W. Truran and H. Tufo, Astrophys. J. Supp. 131, 273 (2000).
- [39] P. Woodward and P. Colella, J. Comp. Phys. 54, 115 (1984).
- [40] P. Colella and P. Woodward, J. Comp. Phys. 54, 174 (1984).
- [41] C.R. Evans and J.F. Hawley, Astrophys. J. 332, 659 (1988).
- [42] Z. Kuncic and G.V. Bicknell, Astrophys. J. 616, 669 (2004).
- [43] Z. Kuncic and G.V. Bicknell, Astrop. Sp. Sci. 311, 127 (2007a).
- [44] Z. Kuncic and G.V. Bicknell, Mod. Phys. Lett. A 22, 1685 (2007b).
- [45] E.J.D. Jolley and Z. Kuncic, Mon. Not. R. Astron. Soc. 386, 989 (2008).
- [46] C.G. Campbell, Mon. Not. R. Astron. Soc. 345, 123 (2003).
- [47] V.M. Vasyliunas, Rev. Geophys. Space Phys. 13, 303 (1975).
- [48] D. Biskamp, Phys. Rep. 237, 179 (1993).
- [49] N.I. Shakura and R.A. Sunyaev, Mon. Not. R. Astron. Soc. 175, 613 (1976).
- [50] M.L. Alme and J.R. Wilson, Astrophys. J. 186, 1015 (1973).
- [51] C.D. Levermore and G.C. Pomraning, Astrophys. J. 248, 321 (1981).
- [52] J.I. Castor, in Radiation Hydrodynamics (Cambridge, Cambridge Univ. Press, 2004).
- [53] N.J. Turner and J.M. Stone, Astrophys. J. Supp. 135, 95 (2001).
- [54] N.J. Turner, Astrophys. J. 606, L45 (2004).
- [55] S. Hirose and J.H. Krolik, Astrophys. J. 640, 901 (2006).
- [56] J.H. Krolik, S. Hirose and O. Blaes, Astrophys. J. 664, 1045 (2007).
- [57] O. Blaes, S. Hirose and J.H. Krolik, Astrophys. J. 664, 1057 (2007).
- [58] M.R. Krumholz, R.I. Klein, C.F. McKee and J. Bolstad, Astrophys. J. 667, 626 (2007).
This paper may be cited as follows:
Peter B. DOBBIE, Zdenka KUNCIC, Geoffrey V. BICKNELL and Raquel SALMERON, Plasma Fusion Res. 4, 017 (2009).