Results 51 to 60 of about 154,154 (200)
Features of the mass transfer in magnetic cataclysmic variables with fast-rotating white dwarfs
EPJ Web of Conferences, 2014 The flow structure in magnetic cataclysmic variables was investigated taking into account the effects of strong magnetic field and fast rotation of the white dwarf. We modeled the AE Aqr system as a unique object that has the rotation period of the white
Isakova Polina +2 more
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2022 In this research, first considering the electron–electron interaction in the high-density Fermi electron gas at T = 0 K, this interaction causes the pressure 2/137 time less than the original value.
Ting-Hang Pei
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Gravitational Radiation from Pulsating White Dwarfs [PDF]
, 2003 Rotating white dwarfs undergoing quasi-radial oscillations can emit gravitational radiation in a frequency range from 0.1 - 0.3 Hz. Assuming that the energy source for the gravitational radiation comes from the oblateness of the white dwarf induced by ...
A. A. Sadoyan +10 more
core +3 more sources
Symposium - International Astronomical Union, 1974 The effects of core crystallization and of convection in the envelope on the cooling of white dwarfs are reviewed. The case of a 0.6 M⊙ white dwarf composed of an oxygen core and a helium envelope is taken as example. Also the amount of hydrogen that a white dwarf can accrete before nuclear burning occurs is estimated and possible evolutionary ...
openaire +1 more source
A Test of Spectroscopic Age Estimates of White Dwarfs Using Wide WD+WD Binaries
The Astrophysical JournalWhite dwarf stars have been used for decades as precise and accurate age indicators. This work presents a test of the reliability of white dwarf total ages when spectroscopic observations are available. We conduct follow-up spectroscopy of 148 individual
Tyler M. Heintz +6 more
doaj +1 more source
AR Sco as a possible seed of highly magnetised white dwarf
, 2017 We explore the possibility that the recently discovered white dwarf pulsar AR Sco acquired its high spin and magnetic field due to repeated episodes of accretion and spin-down. An accreting white dwarf can lead to a larger mass and consequently a smaller
Bhatia, Tanayveer Singh +2 more
core +1 more source
LP 400-22, A very low-mass and high-velocity white dwarf [PDF]
, 2006 We report the identification of LP 400-22 (WD 2234+222) as a very low-mass and high-velocity white dwarf. The ultraviolet GALEX and optical photometric colors and a spectral line analysis of LP 400-22 show this star to have an effective temperature of ...
Adela Kawka +6 more
core +4 more sources
Rotating hot white dwarfs [PDF]
Gravitation, Astrophysics, and Cosmology, 2016 2 pages, 2 ...
Boshkayev, Kuantay +2 more
openaire +2 more sources
Le Journal de Physique Colloques, 1980 The thermal properties and neutrino emissivity of matter in the dense, degenerate cores of white dwarfs, together with efficient heat transport through the high-density envelopes of these stars, affect the theoretical white dwarf luminosity function.
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New Pulsating DB White Dwarf Stars from the Sloan Digital Sky Survey
, 2008 We are searching for new He atmosphere white dwarf pulsators (DBVs) based on the newly found white dwarf stars from the spectra obtained by the Sloan Digital Sky Survey.
A. Nitta +32 more
core +1 more source