Turbulent protostellar discs

被引：4
作者：
Brandenburg, A. [1 ]
机构：
[1] NORDITA, SE-10691 Stockholm, Sweden
来源：
PHYSICA SCRIPTA | 2008年 / T130卷
关键词：
D O I：
10.1088/0031-8949/2008/T130/014016
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Aspects of turbulence in protostellar accretion discs are being reviewed. The emergence of dead zones due to poor ionization and alternatives to the magneto-rotational instability are discussed. The coupling between dust and gas in protostellar accretion discs is explained and the turbulent drag is compared with laminar drag in the Stokes and Epstein regimes. Finally, the significance of magnetic-field generation in turbulent discs is emphasized in connection with driving outflows and with star-disc coupling.
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页数：8
相关论文
共 61 条
[1]   Bypass to turbulence in hydrodynamic accretion: Lagrangian analysis of energy growth [J].
Afshordi, N ;
Mukhopadhyay, B ;
Narayan, R .
ASTROPHYSICAL JOURNAL, 2005, 629 (01) :373-382
[2]   Accretion disc-stellar magnetosphere interaction: field line inflation and the effect on the spin-down torque [J].
Agapitou, V ;
Papaloizou, JCB .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2000, 317 (02) :273-288
[3]  
[Anonymous], 1986, ENV POL SUS DEV
[4]   A POWERFUL LOCAL SHEAR INSTABILITY IN WEAKLY MAGNETIZED DISKS .1. LINEAR-ANALYSIS [J].
BALBUS, SA ;
HAWLEY, JF .
ASTROPHYSICAL JOURNAL, 1991, 376 (01) :214-222
[5]   The effects of vertical outflows on disk dynamos [J].
Bardou, A ;
von Rekowski, B ;
Dobler, W ;
Brandenburg, A ;
Shukurov, A .
ASTRONOMY & ASTROPHYSICS, 2001, 370 (02) :635-648
[6]  
BARGE P, 1995, ASTRON ASTROPHYS, V295, pL1
[7]   Empirical relation between angular momentum transport and thermal-to-magnetic pressure ratio in shearing box simulations [J].
Blackman, E. G. ;
Penna, R. F. ;
Varniere, P. .
NEW ASTRONOMY, 2008, 13 (04) :244-251
[8]   HYDROMAGNETIC FLOWS FROM ACCRETION DISKS AND THE PRODUCTION OF RADIO JETS [J].
BLANDFORD, RD ;
PAYNE, DG .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1982, 199 (03) :883-903
[9]   Astrophysical magnetic fields and nonlinear dynamo theory [J].
Brandenburg, A ;
Subramanian, K .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2005, 417 (1-4) :1-209
[10]   The disk accretion rate for dynamo-generated turbulence [J].
Brandenburg, A ;
Nordlund, A ;
Stein, RF ;
Torkelsson, U .
ASTROPHYSICAL JOURNAL, 1996, 458 (01) :L45-L48
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