Results 1 to 10 of about 49 (48)
WZ Sagittae as a DQ Herculis star [PDF]
Monthly Notices of the Royal Astronomical Society, 1999 8 pages, 5 figures; accepted for publication in ...
Lasota, Jean-Pierre +2 more
openaire +2 more sources
The Astronomical Journal, 2023 There have been relatively few published long-duration, uninterrupted light curves of magnetic cataclysmic variable stars in which the accreting white dwarf’s rotational frequency is slightly desynchronized from the binary orbital frequency.
Colin Littlefield +9 more
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The Astrophysical Journal Letters, 2023 When the accreting white dwarf in a magnetic cataclysmic variable star (mCV) has a field strength in excess of 10 MG, it is expected to synchronize its rotational frequency to the binary orbit frequency, particularly at small binary separations, due to ...
Colin Littlefield +8 more
doaj +1 more source
The Astrophysical Journal, 2023 We report timing and broadband spectral analysis of a Galactic X-ray source, CXOGBS J174517.0−321356 (J1745), with a 614 s periodicity. Chandra discovered the source in the direction of the Galactic Bulge.
Benjamin Vermette +11 more
doaj +1 more source
Rapid Evolution of the White Dwarf Pulsar AR Scorpii
The Astrophysical Journal Letters, 2023 Analysis of AR Sco optical light curves spanning 9 yr shows a secular change in the relative amplitudes of the beat pulse pairs generated by the two magnetic poles of its rotating white dwarf.
Peter Garnavich +6 more
doaj +1 more source
Gravitational Redshift Detection from the Magnetic White Dwarf Harbored in RX J1712.6–2414
The Astrophysical Journal, 2023 Gravitational redshift is a fundamental parameter that allows us to determine the mass-to-radius ratio of compact stellar objects, such as black holes, neutron stars, and white dwarfs (WDs).
Takayuki Hayashi +4 more
doaj +1 more source
The Astrophysical Journal, 1986 Time-resolved X-ray and optical photometric and optical spectroscopic observations of the ultrashort period cataclysmic variable SW UMa are reported. The spectroscopic observations reveal the presence of an s-wave component which is almost in phase with the extreme line wings and presumably the white dwarf. This very unusual phasing in conjunction with
A. W. Shafter +2 more
openaire +1 more source
The Astrophysical JournalA recent development in the study of magnetic cataclysmic variable stars (mCVs) has been the identification of asynchronously spinning mCVs with orbital periods
Colin Littlefield +4 more
doaj +1 more source
Resolving the Periods of the Asynchronous Polar 1RXS J083842.1–282723
The Astrophysical Journal1RXS J083842.1−282723 is a nearly synchronous magnetic cataclysmic variable with a simple X-ray light curve. While its orbital period was fairly well established at P _orb = 98.4 minutes from optical spectroscopy, indirect estimates of P _spin / P _orb ...
J. P. Halpern
doaj +1 more source
Spectroscopic Follow-up on Potential Magnetic Cataclysmic Variables
The Astronomical JournalSpectroscopic observations of nine cataclysmic variables that have been postulated to contain magnetic white dwarfs were obtained to further characterize their classifications, orbital parameters, inclinations, and/or accretion properties.
Paula Szkody +10 more
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