General relativistic effects in the structure of massive white dwarfs
Sign Up to like & getrecommendations! Published in 2018 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-018-2354-8
Abstract: In this work we investigate the structure of white dwarfs using the Tolman–Oppenheimer–Volkoff equations and compare our results with those obtained from Newtonian equations of gravitation in order to put in evidence the importance of… read more here.
Keywords: dwarfs; white dwarfs; massive white; radius ... See more keywords
A pulsating white dwarf in an eclipsing binary
Sign Up to like & getrecommendations! Published in 2020 at "Nature Astronomy"
DOI: 10.1038/s41550-020-1037-z
Abstract: White dwarfs are the burnt-out cores of Sun-like stars and are the fate of 97 per cent of the stars in our Galaxy. The internal structure and composition of white dwarfs are hidden by their… read more here.
Keywords: pulsating white; white dwarfs; eclipsing binary; white dwarf ... See more keywords
A measurement of the equation of state of carbon envelopes of white dwarfs
Sign Up to like & getrecommendations! Published in 2020 at "Nature"
DOI: 10.1038/s41586-020-2535-y
Abstract: White dwarfs represent the final state of evolution for most stars1–3. Certain classes of white dwarfs pulsate4,5, leading to observable brightness variations, and analysis of these variations with theoretical stellar models probes their internal structure.… read more here.
Keywords: state; white dwarf; white dwarfs; equation state ... See more keywords
Buoyant crystals halt the cooling of white dwarf stars
Sign Up to like & getrecommendations! Published in 2024 at "Nature"
DOI: 10.1038/s41586-024-07102-y
Abstract: White dwarfs are stellar remnants devoid of a nuclear energy source, gradually cooling over billions of years1,2 and eventually freezing into a solid state from the inside out3,4. Recently, it was discovered that a population… read more here.
Keywords: cooling billions; buoyant crystals; white dwarf; white dwarfs ... See more keywords
Importance of fingering convection for accreting white dwarfs in the framework of full evolutionary calculations: the case of the hydrogen-rich white dwarfs GD 133 and G 29-38
Sign Up to like & getrecommendations! Published in 2017 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201630094
Abstract: Context. A large fraction of white dwarfs show photospheric chemical composition that is polluted by heavy elements accreted from a debris disk. Such debris disks result from the tidal disruption of rocky planetesimals that have… read more here.
Keywords: white dwarfs; accretion; fingering convection; convection ... See more keywords
Double detonations of sub-MCh CO white dwarfs: variations in Type Ia supernovae due to different core and He shell masses
Sign Up to like & getrecommendations! Published in 2021 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202039954
Abstract: Sub-Chandrasekhar mass carbon-oxygen white dwarfs with a surface helium shell have been proposed as progenitors of Type Ia supernovae (SNe Ia). If true, the resulting thermonuclear explosions should be able to account for at least… read more here.
Keywords: core shell; white dwarfs; different core; shell ... See more keywords
Nucleus acoustic wave structures in self-gravitational quantum plasma—White dwarfs application
Sign Up to like & getrecommendations! Published in 2025 at "Physics of Plasmas"
DOI: 10.1063/5.0278380
Abstract: This study delves into the criteria governing the formation of various nonlinear features observed in nucleus acoustic (NA) waves propagating within a magnetized, relativistic, and self-gravitating quantum plasma system. Comprising relativistic degenerate electrons and non-degenerate… read more here.
Keywords: quantum plasma; nucleus acoustic; white dwarfs; wave structures ... See more keywords
Properties of white dwarfs in Einstein-Λ gravity
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2019/02/040
Abstract: In this paper, we explore the properties of white dwarfs with the modified TOV equation in Einstein-$\Lambda$ gravity, the equilibrium configurations predict a maximum mass limit for white dwarfs same as the Chandrasekhar limit when… read more here.
Keywords: white dwarfs; properties white; einstein; white dwarf ... See more keywords
X-Ray Emissions from Accreting White Dwarfs: A Review
Sign Up to like & getrecommendations! Published in 2017 at "Publications of the Astronomical Society of the Pacific"
DOI: 10.1088/1538-3873/aa6736
Abstract: Interacting binaries in which a white dwarf accretes material from a companion - cataclysmic variables (CVs) in which the mass donor is a Roche-lobe filling star on or near the main sequence, and symbiotic stars… read more here.
Keywords: emissions accreting; accreting white; white dwarfs; dwarfs review ... See more keywords
Producing Type Ia Supernovae from Hybrid CONe White Dwarfs with Main-sequence Binary Companions at Low Metallicity of Z = 0.0001
Sign Up to like & getrecommendations! Published in 2024 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/ada2e9
Abstract: The nature of progenitors of Type Ia supernovae (SNe Ia) and their explosion mechanism remains unclear. It has been suggested that SNe Ia may have resulted from thermonuclear explosions of hybrid carbon–oxygen–neon white dwarfs (CONe… read more here.
Keywords: metallicity; low metallicity; main sequence; type supernovae ... See more keywords
Difficulties of Two Exploding White Dwarfs to Account for Type Ia Supernovae with Bimodal Nebular Emission Profiles
Sign Up to like & getrecommendations! Published in 2024 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/add567
Abstract: We use a simple dynamical scheme to simulate the ejecta of type Ia supernova (SN Ia) scenarios with two exploding white dwarfs (WDs) and find that the velocity distribution of the ejecta has difficulties accounting… read more here.
Keywords: separation; two exploding; velocity; exploding white ... See more keywords