Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Zink, Burkhard"'
Autor:
Zink, Burkhard Sebastian.
München, Techn. Univ., Diss., 2006.
Externí odkaz:
http://deposit.ddb.de/cgi-bin/dokserv?idn=980413451
We perform nonlinear general relativistic ideal magnetohydrodynamic simulations of poloidal magnetic fields in rotating polytropic neutron stars. We have three primary goals: i) to understand the nature of magnetohydrodynamic instabilities inherent t
Externí odkaz:
http://arxiv.org/abs/1203.3590
Publikováno v:
Phys. Rev. D 85, 024030 (2012)
Are giant flares in magnetars viable sources of gravitational radiation? Few theoretical studies have been concerned with this problem, with the small number using either highly idealized models or assuming a magnetic field orders of magnitude beyond
Externí odkaz:
http://arxiv.org/abs/1107.1689
Rapidly spinning neutron stars are known to harbour pulsation modes that may become unstable and grow in amplitude by emitting gravitational radiation. Among the various stellar modes, the f-mode is the one typically considered as a promising source
Externí odkaz:
http://arxiv.org/abs/1106.5512
Publikováno v:
2011 ApJ 735, L20
We model the non-linear ideal magnetohydrodynamics of poloidal magnetic fields in neutron stars in general relativity assuming a polytropic equation of state. We identify familiar hydromagnetic modes, in particular the 'sausage/varicose' mode and 'ki
Externí odkaz:
http://arxiv.org/abs/1105.1895
Autor:
Zink, Burkhard
We present Horizon, a new graphics processing unit (GPU)-accelerated code to solve the equations of general relativistic magnetohydrodynamics in a given spacetime. We evaluate the code in several test cases, including magnetized Riemann problems and
Externí odkaz:
http://arxiv.org/abs/1102.5202
Autor:
Korobkin, Oleg, Abdikamalov, Ernazar B., Schnetter, Erik, Stergioulas, Nikolaos, Zink, Burkhard
Publikováno v:
Phys.Rev.D83:043007,2011
Self-gravitating relativistic disks around black holes can form as transient structures in a number of astrophysical scenarios such as binary neutron star and black hole-neutron star coalescences, as well as the core-collapse of massive stars. We exp
Externí odkaz:
http://arxiv.org/abs/1011.3010
Publikováno v:
Phys.Rev.D81:084055,2010
Rapidly rotating neutron stars can be unstable to the gravitational-wave-driven CFS mechanism if they have a neutral point in the spectrum of nonaxisymmetric f-modes. We investigate the frequencies of these modes in two sequences of uniformly rotatin
Externí odkaz:
http://arxiv.org/abs/1003.0779
Autor:
Zink, Burkhard
An indirect, hybrid Monte Carlo discretization of general relativistic kinetic theory suitable for the development of numerical schemes for radiation transport is presented. The discretization is based on surface flux estimators obtained from a local
Externí odkaz:
http://arxiv.org/abs/0810.5349
Publikováno v:
Phys.Rev.D77:103015,2008
Many systems of interest in general relativistic astrophysics, including neutron stars, accreting compact objects in X-ray binaries and active galactic nuclei, core collapse, and collapsars, are assumed to be approximately spherically symmetric or ax
Externí odkaz:
http://arxiv.org/abs/0712.0353