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Spin and spin-isospin instabilities in asymmetric nuclear matter at zero and finite temperatures using Skyrme functionals
Spin spin-isospin instabilities asymmetric nuclear matter at zero finite temperatures
2010/11/16
Self-consistent mean field methods based on phenomenological Skyrme effective interactions are
known to exhibit spurious spin and spin-isospin instabilities both at zero and finite temperatures when ...
Quasi-biennial oscillations in the solar tachocline caused by magnetic Rossby wave instabilities
Sun oscillations Physical Data and Processes magnetic fields MHD—waves
2010/11/11
Quasi-biennial oscillations (QBO) are frequently observed in the solar activity indices. However, no clear physical mechanism for the observed variations has been suggested so far. Here we study the s...
Intermittent activity of radio sources. Accretion instabilities and jet precession
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/4
We consider the radiation pressure instability operating on short timescales 10^3 - 10^6 years in the accretion disk around a supermassive black hole as the origin of the intermittent activity of radi...
Instabilities in the Gamma Ray Burst central engine. What makes the jet variable?
High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/24
Both types of long and short gamma ray bursts involve a stage of a hyper-Eddington accretion of hot and dense plasma torus onto a newly born black hole. The prompt gamma ray emission originates in jet...
Probing the accretion disk - jet connection via instabilities in the inner accretion flow. From microquasars to quasars
High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/24
We present various instability mechanisms in the accreting black hole systems which might indicate at the connection between the accretion disk and jet. The jets observed in microquasars can have a pe...
Oscillations and instabilities in neutron stars with poloidal magnetic fields
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/23
We study the time evolution of non-axisymmetric linear perturbations of a rotating magnetised neutron star, whose magnetic field is multipolar and purely poloidal. The background stellar configuration...
Disk instabilities and Quasi-Periodic Oscillations
Disk instabilities Quasi-Periodic Oscillations
2009/7/1
Disk instabilities and Quasi-Periodic Oscillations。
A Simple Model for Hydromagnetic Instabilities in the Presence of a Constant Magnetic Field
Hydromagnetic Instabilities Constant Magnetic Field
2009/6/25
A Simple Model for Hydromagnetic Instabilities in the Presence of a Constant Magnetic Field。
Gravitational Instabilities in Disks：From Polytropes to Protoplanets?
Gravitational Instabilities Disks Protoplanets
2009/6/16
Gravitational Instabilities in Disks：From Polytropes to Protoplanets?
Ionization Front Instabilities。