The radial disc structure around a magnetic neutron star: analytic and semi-analytic solutions
نویسندگان
چکیده
منابع مشابه
The radial disc structure around a magnetic neutron star: analytic and semi-analytic solutions
The radial structure of a thin accretion disc is calculated in the presence of a central dipole magnetic field aligned with the rotation axis. The problem is treated using a modified expression for the turbulent magnetic diffusion, which allows the angular momentum equation to be integrated analytically. The governing algebraic equations are solved iteratively between 1 and 10 4 stellar radii. ...
متن کاملThe radial disc structure around a magnetic neutron star : analytic and semi -
The radial structure of a thin accretion disc is calculated in the presence of a central dipole magnetic eld aligned with the rotation axis. The problem is treated using a modiied expression for the turbulent magnetic diiusion, which allows the angular momentum equation to be integrated analytically. The governing algebraic equations are solved iteratively between 1 ? 10 4 stellar radii. An ana...
متن کاملOn Analytic Solutions of Elastic Net Displacements around a Circular Tunnel
Displacements around a tunnel, occurring as a result of excavation, consist of the elastic and plastic parts. In this paper, we discuss the elastic part of displacements as a result of excavation, called net displacement. In general, the previous analytical solutions presented for determining the displacements around a circular tunnel in an elastic medium do not give the net displacements...
متن کاملDisc instabilities and semi-analytic modelling of galaxy formation
The Efstathiou, Lake and Negroponte (1982) criterion can not distinguish bar stable from bar unstable discs and thus should not be used in semi-analytic galaxy formation simulations. I discuss the reasons for this, illustrate it with examples and point out shortcomings in the recipes used for spheroid formation. I propose an alternative, although much less straightforward, possibility.
متن کاملAlmost Analytic Models of Ultramagnetized Neutron Star Envelopes
Recent ROSAT measurements show that the x-ray emission from isolated neutron stars is modulated at the stellar rotation period. To interpret these measurements, one needs precise calculations of the heat transfer through the thin insulating envelopes of neutron stars. We present nearly analytic models of the thermal structure of the envelopes of ultramagnetized neutron stars. Specifically, we e...
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: Monthly Notices of the Royal Astronomical Society
سال: 1998
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.1998.01619.x