Electromagnetic Characterization of the LISA Verification Binary ZTF J0526+5934
The Astrophysical Journal, 2023 We present an analysis of new and archival data to the 20.506 minute LISA verification binary J052610.42+593445.32 (J0526+5934). Our joint spectroscopic and photometric analysis finds that the binary contains an unseen M _1 = 0.89 ± 0.11 M _⊙ CO-core ...
Alekzander Kosakowski +3 more
doaj +1 more source
Cooling Process of White Dwarf Stars in Palatini f(R) Gravity
Universe, 2022 A simple cooling model of white dwarf stars is re-analyzed in Palatini f(R) gravity. Modified gravity affects the white dwarf structures and consequently their ages.
Surajit Kalita +2 more
doaj +1 more source
Can the rapid braking of the white dwarf in AE Aquarii be explained in terms of the gravitational wave emitter mechanism? [PDF]
, 2002 The spin-down power of the white dwarf in the close binary AE Aquarii significantly exceeds the bolometric luminosity of the system. The interpretation of this phenomenon in terms of the gravitational-wave emitter mechanism has been recently suggested by
Beskrovnaya, Nina G., Ikhsanov, Nazar R.
core +2 more sources
A White Dwarf with Transiting Circumstellar Material Far outside the Roche Limit
Astrophysical Journal, 2019 We report the discovery of a white dwarf exhibiting deep, irregularly shaped transits, indicative of circumstellar planetary debris. Using Zwicky Transient Facility DR2 photometry of ZTF J013906.17+524536.89 and follow-up observations from the Las ...
Z. Vanderbosch +11 more
semanticscholar +1 more source
A radio-pulsing white dwarf binary star [PDF]
Nature, 2016 White dwarfs are compact stars, similar in size to Earth but approximately 200,000 times more massive. Isolated white dwarfs emit most of their power from ultraviolet to near-infrared wavelengths, but when in close orbits with less dense stars, white ...
T. Marsh +28 more
semanticscholar +1 more source
Cubic crystal elastic constants of a white dwarf stellar core determined via modal analysis
AIP Advances, 2021 In this work, we present the cubic crystal elastic constants of a fully crystallized white dwarf stellar core. Elastic constants were calculated utilizing modal analysis of three-dimensional single-layer and stratified multi-layer crystalline core models.
K. A. Pestka II +3 more
doaj +1 more source
Hot white dwarfs and the UV delay in dwarf novae
, 1998 We calculate the effect of illumination of dwarf nova accretion discs by radiation from a hot, central, white dwarf. We show that only for very hot white dwarfs (Teff ~ 40 000$ K) the inner region of quiescent dwarf nova discs are partially depleted so ...
Dubus, G. +2 more
core +2 more sources
A Dark Spot on a Massive White Dwarf [PDF]
, 2015 We present the serendipitous discovery of eclipse-like events around the massive white dwarf SDSS J152934.98+292801.9 (hereafter J1529+2928). We selected J1529+2928 for time-series photometry based on its spectroscopic temperature and surface gravity ...
Bell, Keaton J. +9 more
core +2 more sources
Prospects for detection of detached double white dwarf binaries with Gaia, LSST and LISA [PDF]
, 2017 Double white dwarf (DWD) binaries are expected to be very common in the Milky Way, but their intrinsic faintness challenges the detection of these systems. Currently, only a few tens of detached DWDs are know.
V. Korol +5 more
semanticscholar +1 more source
A Photometric and Spectroscopic Investigation of the DB White Dwarf Population Using SDSS and Gaia Data [PDF]
Astrophysical Journal, 2019 We present a comprehensive analysis of DB white dwarfs drawn from the Sloan Digital Sky Survey, based on model fits to ugriz photometry and medium-resolution spectroscopy from the Sloan Digital Sky Survey.
C. Genest-Beaulieu, P. Bergeron
semanticscholar +1 more source