Results 31 to 40 of about 73,128 (295)
Universe, 2023 In 1995, Glendenning, Kettner and Weber postulated the existence of a new class of compact stars resembling white dwarfs but containing a small strange quark-matter core surrounded by hadronic layers attaining much higher densities than those found in ...
Loïc Perot, Nicolas Chamel
doaj +1 more source
A new magnetic white dwarf : PG2329+267 [PDF]
, 1997 We have discovered that the white dwarf PG 2329+267 is magnetic, and assuming a centered dipole structure, has a dipole magnetic field strength of approximately 2.3MG.
Dhillon, V. S., Marsh, T. R., Moran, C.
core +3 more sources
Accelerating Catalyst Materials Discovery With Large Artificial Intelligence Models
Angewandte Chemie, EarlyView.AI‐empowered catalysis research via integrated database platform, universal machine learning interatomic potentials (MLIPs), and large language models (LLMs). ABSTRACT The integration of artificial intelligence (AI) into catalysis is fundamentally reshaping the research paradigm of catalyst discovery.
Di Zhang +7 more
wiley +2 more sources
The DB gap and a new class of pulsating white dwarfs
EPJ Web of Conferences, 2013 The recent systematic surveys providing enormously massive datasets of white dwarfs show that there is still a deficit of a factor of 2.5 in the DA/non-DA ratio within the temperature range of 30 000 K < Teff < 45 000 K, which has been regarded as the ...
Shibahashi H.
doaj +1 more source
A population synthesis study of the luminosity function of hot white dwarfs
, 2014 We present a coherent and detailed Monte Carlo simulation of the population of hot white dwarfs. We assess the statistical significance of the hot end of the white dwarf luminosity function and the role played by the bolometric corrections of hydrogen ...
García-Berro, E. +3 more
core +1 more source
The Influence of Tidal Heating on the Habitability of Planets Orbiting White Dwarfs
The Astrophysical Journal Letters, 2023 In recent years, there have been a growing number of observations indicating the presence of rocky material in short-period orbits around white dwarfs. In this Letter, we revisit the prospects for habitability around these post-main-sequence star systems.
Juliette Becker +3 more
doaj +1 more source
Rapidly rotating white dwarfs [PDF]
Nonlinearity, 2020 A rotating star may be modeled as a continuous system of particles attracted to each other by gravity and with a given total mass and prescribed angular velocity. Mathematically this leads to the Euler-Poisson system. A white dwarf star is modeled by a very particular, and rather delicate, equation of state for the pressure as a function of the density.
Strauss, Walter A., Wu, Yilun
openaire +2 more sources
Stellar equilibrium configurations of white dwarfs in the f(R, T) gravity
European Physical Journal C: Particles and Fields, 2017 In this work we investigate the equilibrium configurations of white dwarfs in a modified gravity theory, namely, f(R, T) gravity, for which R and T stand for the Ricci scalar and trace of the energy-momentum tensor, respectively.
G. A. Carvalho +6 more
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A White Dwarf Search Model Based on a Deep Transfer-learning Method
The Astrophysical Journal Supplement Series, 2023 White dwarfs represent the ultimate stage of evolution for over 97% of stars and play a crucial role in studies of the Milky Way’s structure and evolution.
Lei Tan +5 more
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IRTF Observations of White Dwarfs with Possible Near-Infrared Excess [PDF]
, 2009 Near-infrared photometry and spectroscopy is obtained for a heterogeneous sample of nearby white dwarfs with possible excess flux as identified primarily in the Two Micron All Sky Survey. Among the sample of 43 stars are a number of white dwarfs that are
Adelman-McCarthy +93 more
core +2 more sources