Theoretical Aspects of Small-Scale Photospheric Magnetic Fields
نویسندگان
چکیده
منابع مشابه
Small-scale Photospheric Fields: Observational Evidence and Numerical Simulations
Observations suggest that magnetic fields at the solar photosphere may be structured below the limit of the present resolution. We argue that numerical simulations could be used in a complementary way to observations in order to study the small-scale structure of photospheric fields. We present a number of illustrative examples. Subject headings: convection — MHD — Sun: magnetic fields — Sun: p...
متن کاملJet Collimation by Small-Scale Magnetic Fields
A popular model for jet collimation is associated with the presence of a largescale and predominantly toroidal magnetic field originating from the central engine (a star, a black hole, or an accretion disk). Besides the problem of how such a large-scale magnetic field is generated, in this model the jet suffers from the fatal long-wave mode kink magnetohydrodynamic instability. In this paper we...
متن کاملCoronal potential magnetic fields from photospheric sources with finite width
Finite width photospheric sources are used to generate coronal potential magnetic field configurations. The prescription of a suitable distribution of the magnetic flux function within such regions allows to solve the Grad-Shafranov equation and, using the superposition principle, to obtain magnetic field configurations related to arbitrary combinations of photospheric sources and sinks. Follow...
متن کاملTheoretical aspects of magnetic fluctuations
2014 The thermodynamic treatment of equilibrium fluctuations in magnetic systems is discussed and applied to a variety of situations. The spectral density of the magnetic moment or flux are derived for simply-connected bodies (sphere and cylinder) and for multiplyconnected systems (loop and hollow cylinder). The material is considered to be either a normal conductor, a superconductor or ferroma...
متن کاملHigh spatial-resolution spectropolarimetry of small-scale solar magnetic fields
We present a study of the structure and the dynamics of small-scale magnetic elements within solar plage regions. Spectropolarimetric observations with high spatial and spectral resolutions have been obtained for three iron lines with different sensitivities to magnetic field strength and temperature with the Gregory Coudé Telescope at the Observatorio del Teide/Tenerife. The main results are: ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1990
ISSN: 0074-1809
DOI: 10.1017/s0074180900044119