Results 1 to 10 of about 145,815 (295)
Outflows and particle acceleration in the accretion disks of young stars [PDF]
EPJ Web of Conferences, 2019 Magneto-gas-dynamic (MGD) outflows from the accretion disks of T Tauri stars with fossil large-scale magnetic fileld are investigated. We consider two mechanisms of the outflows: rise of the magnetic flux tubes (MFT) formed in the regions of efficient ...
Khaibrakhmanov Sergey, Dudorov Alexander
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Symposium - International Astronomical Union, 1986 Flare activity on the sun may be attributed to the distortion of coronal magnetic field caused primarily by vortical (Shearing) photospheric motion. If an accretion disk is permeated by a magnetic field, the strong differential rotation of the disk will lead to similar stressing of the magnetosphere, and one may expect similar flare activity to occur ...
P. A. Sturrock, W. Yang
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Discovery of Two Different Full Disk Evolutionary Patterns of M-type T Tauri Stars with LAMOST DR8
The Astrophysical Journal, 2023 The full disk, full of gas and dust, determines the upper limit of planet masses, and its lifetime is critical for planet formation, especially for giant planets.
Hasitieer Haerken +4 more
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Dissipationless disk accretion [PDF]
Astronomy Reports, 2005 17 pages, 6 figures, published in Astronomy Reports, Vol.49, No.1, 2005, p.57 (submitted September 13, 2003). Unfortunately, we did not upload the paper to astro-ph before, but since the topic is now of interest we feel that the paper would benefit the ...
Bogovalov, Sergey V. +1 more
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Counterrotating Accretion Disks [PDF]
The Astrophysical Journal, 1996 7 pages, 3 figures, aas2pp4.sty, submitted to ...
Lovelace, R. V. E., Chou, Tom
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“Dark Matter” in Accretion Disks [PDF]
The Astrophysical Journal, 2008 Using Spitzer Space Telescope photometric observations of the eclipsing, interacting binary WZ Sge, we have discovered that the accretion disk is far more complex than previously believed. Our 4.5 and 8 micron time series observations reveal that the well known gaseous accretion disk is surrounded by an asymmetric disk of dusty material with a radius ...
Howell, Steve B. +6 more
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The Astrophysical Journal, 2023 We present global 3D radiation magnetohydrodynamic simulations of accretion onto a 6.62 solar-mass black hole, with quasi-steady-state accretion rates reaching 0.016–0.9 times the critical accretion rate, which is defined as the accretion rate for ...
Jiahui Huang +5 more
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Accretion disk instabilities [PDF]
International Astronomical Union Colloquium, 1986 In this article we discuss two instabilities of stationary accretion disks which lead to an understanding of observed light variations in accretion disk systems, the dwarf novae and the rapid burster MXB 17030-335. The accretion disks in these systems avoid instability at the cost of stationarity and perform stable cycles in which sudden changes of the
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ACCRETION DISKS WITH A LARGE SCALE MAGNETIC FIELD AROUND BLACK HOLES
Acta Polytechnica, 2013 We consider accretion disks around black holes at high luminosity, and the problem of the formation of a large-scale magnetic field in such disks, taking into account the non-uniform vertical structure of the disk.
Gennady Bisnovatyi-Kogan +2 more
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Accretion Disks in Algols [PDF]
International Astronomical Union Colloquium, 1989 AbstractBasic theoretical concepts concerning formation and properties of disKs in close binary systems are reviewed and compared with observations of Algols.
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