Orbital ferromagnetism and quantum collapse in stellar plasmas

Journal Article · Tue Nov 15 04:00:00 EST 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3660675· OSTI ID:22047082

Akbari-Moghanjoughi, M ^[1]

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1. Faculty of Sciences, Department of Physics, Azarbaijan University of Tarbiat Moallem, 51745-406 Tabriz (Iran, Islamic Republic of)

The possibility of quantum collapse and characteristics of nonlinear localized excitations are examined in dense stars with Landau orbital ferromagnetism in the framework of conventional quantum magnetohydrodynamics model including Bohm force and spin-orbit polarization effects. Employing the concepts of effective potential and Sagdeev pseudopotential, it is confirmed that the quantum collapse and Landau orbital ferromagnetism concepts are consistent with the magnetic field and mass-density range present in some white dwarf stars. Furthermore, the value of ferromagnetic-field found in this work is about the same order of magnitude as the values calculated earlier. It is revealed that the magnetosonic nonlinear propagations can behave much differently in the two distinct non-relativistic and relativistic degeneracy regimes in a ferromagnetic dense astrophysical object. Current findings should help to understand the origin of the most important mechanisms such as gravitational collapse and the high magnetic field present in many compact stars.

• OSTI ID: 22047082
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 18; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
79 ASTRONOMY AND ASTROPHYSICS
ASTROPHYSICS
EXCITATION
FERROMAGNETISM
GRAVITATIONAL COLLAPSE
MAGNETOHYDRODYNAMICS
NONLINEAR PROBLEMS
ORBITS
PLASMA DENSITY
POLARIZATION
POTENTIALS
RELATIVISTIC PLASMA
RELATIVISTIC RANGE
WHITE DWARF STARS