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- W2049585931 abstract "view Abstract Citations (13) References (41) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Wave Energy in White Dwarf Atmospheres. I. Magnetohydrodynamic Energy Spectra for Homogeneous DB and Layered DA Stars Musielak, Zdzislaw E. Abstract The radiative damping of acoustic and MHD waves that propagate through white dwarf photospheric layers is studied, and other damping processes that may be important for the propagation of the MHD waves are calculated. The amount of energy remaining after the damping processes have occurred in different types of waves is estimated. The results show that lower acoustic fluxes should be expected in layered DA and homogeneous DB white dwarfs than had previously been estimated. Acoustic emission manifests itself in an enhancement of the quadrupole term, but this term may become comparable to or even lower than the dipole term for cool white dwarfs. Energy carried by the acoustic waves is significantly dissipated in deep photospheric layers, mainly because of radiative damping. Acoustically heated corona cannot exist around DA and DB white dwarfs in a range T(eff) = 10,000-30,000 K and for log g = 7 and 8. However, relatively hot and massive white dwarfs could be exceptions. Publication: The Astrophysical Journal Pub Date: November 1987 DOI: 10.1086/165718 Bibcode: 1987ApJ...322..234M Keywords: A Stars; B Stars; Energy Spectra; Magnetohydrodynamic Waves; Stellar Atmospheres; White Dwarf Stars; Magnetic Flux; Stellar Coronas; Astrophysics; CONVECTION; HYDROMAGNETICS; STARS: ATMOSPHERES; STARS: WHITE DWARFS full text sources ADS |" @default.
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- W2049585931 date "1987-11-01" @default.
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- W2049585931 title "Wave energy in white dwarf atmospheres. I - Magnetohydrodynamic energy spectra for homogeneous DB and layered DA stars" @default.
- W2049585931 doi "https://doi.org/10.1086/165718" @default.
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