MODEL OF MAGNETIC DEGENERATE DWARF
Journal Title: Odessa Astronomical Publications - Year 2017, Vol 30, Issue
Abstract
The macroscopic characteristics of the degenerate dwarves were calculated based on the equation of state of a spin-polarized electron gas at T = 0K as well as at finite temperatures. It was shown that the spin-polarization cause an increase of the radius and mass in comparison with the characteristics of standard Chandrasekhar model. Within adopted model, the value of critical mass was estimated, by which an instability due to general relativity effects occurs. Parameters of model are: the relativistic parameter x0 at stellar center, the chemical composition parameter µe = ‹A/Z›, the degree of spinpolarization ζ, the dimensionless temperature of core T0∗= kBTc/m0c2 and its radius ξ0 = Rc/R (Rcis the core radius, R is the radius of a dwarf). The inverse problem for a sample of massive dwarfs was solved using the known masses and radii and the parameters x0, T0∗ were found for fixed values of spin-polarization.
Authors and Affiliations
S. V. Smerechynskyi, D. V. Dzikovskyi
Keywords
Related Articles
- EP ID EP349381
- DOI 10.18524/1810-4215.2017.30.114380
- Views 93
- Downloads 0
THE CHARACTERISTICS OF ELECTRON-NUCLEAR MODEL IN THE DEGENERATE DWARFS THEORY. EQUATION OF STATE
Within the microscopic theory the ground state energy of spatially homogeneous degenerate relativistic subsystem of electrons in the field of stationary nuclei of l-th sorts with charges z1, . . . , zl was calculated. In...
THE EFFECT OF MAJOR METEOR STREAMS ON THE TOTAL OZONE IN THE EARTH’S ATMOSPHERE
The correlation between the total ozone and activity of major meteor streams, such as the Perseids, Geminids, Leonids and Orionids, has been found using the Total Ozone Mapping Spectrometer (TOMS) measurements of the glo...
THE CHANGE INDICES OF SOLAR AND GEOMAGNETIC ACTIVITY AND THEIR INFLUENCE ON THE DINAMICS OF DRAG OF ARTIFICIAL SATELLITE
The time-frequency and multiple regression analysis of the orbital parameter characterizing the drag of satellites on circular and elliptical orbits with different perigees and orbital inclinations in the atmosphere of t...
DIFFERENT APPROACHES FOR DARK MATTER HALOS OF CLUSTERS OF GALAXIES
To describe the density profile of dark matter halos of clusters of galaxies, we compare the approach based on the Schwarzschild-de Sitter metric with a recentlydeveloped mechanical one (discrete cosmology inside the cel...
THE DAILY 110 MHZ SKY SURVEY (BSA FIAN): ON-LINE DATABASE, SCIENCE AIMS AND FIRST RESULTS OF DATA PROCESSING
From 2012 on radio telescope BSA FIAN multi beams diagram was started. It capable at July 2014 daily observing by 96 beams in declination -8 .. 42 degrees in the frequency band 109-111.5 MHz. The number of frequency band...