scholarly journals Force-Free Stellar Magnetospheres

1976 ◽  
Vol 174 (2) ◽  
pp. 307-317 ◽  
Author(s):  
F. Milsom ◽  
G. A. E. Wright
Keyword(s):  
Stellar Magnetospheres

scholarly journals The Observational Evidence for Accretion

1997 ◽  
Vol 182 ◽  
pp. 391-405 ◽  
Author(s):  
Lee Hartmann
Keyword(s):  
Large Range ◽  
Observational Evidence ◽  
Young Stars ◽  
Young Stellar Objects ◽  
Stellar Objects ◽  
T Tauri ◽  
Accretion Rates ◽  
Low Mass ◽  
Stellar Magnetospheres ◽  
Mass Ejection

Outflows from low-mass young stellar objects are thought to draw upon the energy released by accretion onto T Tauri stars. I briefly summarize the evidence for this accretion and outline present estimates of mass accretion rates. Young stars show a very large range of accretion rates, and this has important implications for both mass ejection and for the structure of stellar magnetospheres which may truncate T Tauri disks.

X-ray coronae and stellar magnetospheres

2010 ◽  
Author(s):  
G. A. J. Hussain ◽  
N. S. Brickhouse ◽  
A. K. Dupree ◽  
S. H. Saar ◽  
M. Jardine ◽  
...  
Keyword(s):  
X Ray ◽  
Stellar Magnetospheres

scholarly journals MHD simulations of star-disk magnetospheres and the formation of outflows and jets

2007 ◽  
Vol 3 (S243) ◽  
pp. 265-276
Author(s):  
Christian Fendt
Keyword(s):  
Numerical Simulation ◽  
Stellar Wind ◽  
Large Scale ◽  
Disk Surface ◽  
Time Dependent ◽  
Mhd Simulations ◽  
Tremendous Progress ◽  
Stellar Magnetospheres ◽  
Scale Evolution

AbstractIn this review the recent development concerning the large-scale evolution of stellar magnetospheres in interaction with the accretion disk is discussed. I put emphasis on the generation of outflows and jets from the disk and/or the star. In fact, tremendous progress has occurred over the last decade in the numerical simulation of the star-disk interaction. The role of numerical simulations is essential in this area because the processes involved are complex, strongly interrelated, and often highly time-dependent. Recent MHD simulations suggest that outflows launched from a very concentrated region tend to be un-collimated. I present preliminary results of simulations of large-scale star-disk magnetospheres loaded with matter from the stellar, resp. the disk surface demonstrating how a disk jet collimates the wind from the star and also how the stellar wind lowers the collimation degree of the disk outflow.

Energy release in stellar magnetospheres

1994 ◽  
Vol 68 (1-4) ◽  
pp. 299-307 ◽  
Author(s):  
A. A. Van Ballegooijen
Keyword(s):  
Energy Release ◽  
Stellar Magnetospheres

Stellar Magnetospheres

2009 ◽  
Vol 39 ◽  
pp. 223-254 ◽  
Author(s):  
S. Owocki
Keyword(s):  
Stellar Magnetospheres

scholarly journals Searching for massive star magnetospheres

2010 ◽  
Vol 6 (S272) ◽  
pp. 176-177
Author(s):  
David Bohlender ◽  
Dmitry Monin
Keyword(s):  
Massive Star ◽  
The Status ◽  
Stellar Magnetospheres

AbstractWe review the status of a long-term program to search for stellar magnetospheres in Bp stars. A few new σOri E analogues discovered during the course of this investigation are briefly discussed and other stars that may be worthy of further study are noted.

scholarly journals Magnetic fields of M dwarfs

2020 ◽  
Vol 29 (1) ◽  
Author(s):  
Oleg Kochukhov
Keyword(s):  
Magnetic Fields ◽  
Zeeman Effect ◽  
Mean Field ◽  
Field Measurements ◽  
Theoretical Models ◽  
Planetary Science ◽  
M Dwarfs ◽  
Stellar Magnetospheres ◽  
M Dwarf Stars ◽  
M Dwarf

AbstractMagnetic fields play a fundamental role for interior and atmospheric properties of M dwarfs and greatly influence terrestrial planets orbiting in the habitable zones of these low-mass stars. Determination of the strength and topology of magnetic fields, both on stellar surfaces and throughout the extended stellar magnetospheres, is a key ingredient for advancing stellar and planetary science. Here, modern methods of magnetic field measurements applied to M-dwarf stars are reviewed, with an emphasis on direct diagnostics based on interpretation of the Zeeman effect signatures in high-resolution intensity and polarisation spectra. Results of the mean field strength measurements derived from Zeeman broadening analyses as well as information on the global magnetic geometries inferred by applying tomographic mapping methods to spectropolarimetric observations are summarised and critically evaluated. The emerging understanding of the complex, multi-scale nature of M-dwarf magnetic fields is discussed in the context of theoretical models of hydromagnetic dynamos and stellar interior structure altered by magnetic fields.

scholarly journals The influence of radiative effects on the accretion onto stellar magnetospheres

2003 ◽  
Vol 402 (1) ◽  
pp. 13-28 ◽  
Author(s):  
I. A. Kryukov ◽  
N. V. Pogorelov ◽  
U. Anzer ◽  
G. S. Bisnovatyi-Kogan ◽  
G. Börner
Keyword(s):  
Radiative Effects ◽  
Stellar Magnetospheres
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