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Related papers: The X-ray Properties of Cataclysmic Variables

200 papers

(abridged) We present an account of known cataclysmic variables (CVs) that were detected as X-ray sources in eROSITA X-ray surveys and have Gaia DR3 counterparts. We address standard CVs with main sequence donors and white dwarfs accreting…

Solar and Stellar Astrophysics · Physics 2024-07-31 Axel Schwope , Kira Knauff , Jan Kurpas , Mara Salvato , Beate Stelzer , Laurent Stütz , Dusan Tubín-Arenas

The magnetic cataclysmic variables (MCVs) present a wealth of observational diagnostics for studying accretion flows interacting with a magnetosphere. Spin-period pulsations from the rotation of the white dwarf are seen in optical light, in…

Solar and Stellar Astrophysics · Physics 2015-06-18 Coel Hellier

Spiral shocks in cataclysmic variables (CVs) are the result of tidal interactions of the mass donor star with the accretion disc. Their study is fundamental for our understanding of angular momentum transfer in discs. In our quest to learn…

Astrophysics · Physics 2007-05-23 L. Morales-Rueda , T. R. Marsh

Among hard X-ray galactic sources detected by INTEGRAL and Swift surveys, those discovered as accreting white dwarfs have surprisingly boosted in number, representing 20% of the galactic sample. The majority are identified as magnetic…

High Energy Astrophysical Phenomena · Physics 2019-06-28 M. Falanga , D. de Martino , F. Bernardini , K. Mukai

Cataclysmic Variables (CVs) are interacting binaries consisting of at least three components that control their colour and magnitude. Using Gaia we here investigate the influence of the physical properties of these binaries on their…

Solar and Stellar Astrophysics · Physics 2019-12-04 Javier Abril , Linda Schmidtobreick , Alessandro Ederoclite , Carlos López-Sanjuan

For decades cataclysmic variables (CVs) were thought to be one of the few classes of accreting compact objects to not launch jets, and have consequently been used to constrain jet launching models. However, recent theoretical and…

High Energy Astrophysical Phenomena · Physics 2020-09-09 Deanne Coppejans , Christian Knigge

The detection of heavy elements at suprasolar abundances in the atmospheres of some accreting white dwarfs in cataclysmic variables, coupled with the high temperatures needed to produce these elements requires explosive thermonuclear…

Solar and Stellar Astrophysics · Physics 2015-06-22 Edward M. Sion

The INTEGRAL and Swift hard X-ray surveys have identified a large number of new sources, among which many are proposed as Cataclysmic Variables (CVs). Here we present the first detailed study of three X-ray selected CVs, Swift J1907.3-2050,…

We present the results of a systematic study of cataclysmic variables (CVs) and related systems, combining detailed binary-population synthesis (BPS) models with a grid of 120 binary evolution sequences calculated with a Henyey-type stellar…

Astrophysics · Physics 2007-05-23 Ph. Podsiadlowski , Z. Han , S. Rappaport

Cataclysmic variables (CVs) are binary systems consisting of a white dwarf (WD) accreting matter from a companion star. Observations of CVs provide an opportunity to learn about accretion disks, the physics of compact objects, classical…

Cataclysmic variables (CVs) are binaries in which a compact white dwarf accretes material from a low-mass companion star. The discovery of two planets in orbit around the CV HU Aquarii opens unusual opportunities for understanding the…

Earth and Planetary Astrophysics · Physics 2015-06-11 Simon Portegies Zwart

We present a new sample of $K$-band spectral observations for CVs: non-magnetic and magnetic as well as present day and pre CVs. The purpose of this diverse sample is to address the recent claim that the secondary stars in dwarf novae are…

Solar and Stellar Astrophysics · Physics 2015-05-18 Steve B. Howell , Thomas E. Harrison , Paula Szkody , Nicole M. Silvestri

Radiation from accretion discs in cataclysmic variable stars (CVs) provides fundamental information about the properties of these close binary systems and about the physics of accretion in general. The detailed diagnostics of accretion disc…

Astrophysics · Physics 2015-03-13 Irit Idan , Jean-Pierre Lasota , Jean-Marie Hameury , Giora Shaviv

The increasing number of synoptic surveys made by small robotic telescopes, such as the photometric Catalina Real-Time Transient Survey (CRTS), represents a unique opportunity for the discovery of variable sources and improves the…

Observations of Cataclysmic Variables show a number of phenomena that do not fit easily into the standard magnetic braking scenario. These include the large spread in mass transfer rates, the low surface temperatures of many of the…

Astrophysics · Physics 2007-05-23 H. C. Spruit , R. E. Taam

We measure the spatial distribution and hard X-ray luminosity function of cataclysmic variables (CVs) using the INTEGRAL all-sky survey in the 17-60 keV energy band. The vast majority of the INTEGRAL detected CVs are intermediate polars…

Astrophysics · Physics 2009-11-13 M. Revnivtsev , S. Sazonov , R. Krivonos , H. Ritter , R. Sunyaev

According to standard evolutionary theory for cataclysmic variables (CVs), angular momentum loss drives CVs to initially evolve from longer to shorter orbital periods until a minimum period is reached (\approx 80 min). At roughly this…

Solar and Stellar Astrophysics · Physics 2011-05-09 Helena Uthas

We review the X-ray spectral properties of magnetic cataclysmic binaries derived from observations obtained during the last decade with the large X-ray observatories XMM-Newton, Chandra and Suzaku. We focus on the signatures of the…

High Energy Astrophysical Phenomena · Physics 2012-02-17 M. Mouchet , J. M. Bonnet-Bidaud , D. de Martino

The influence of a circumbinary (CB) disk on the evolution of cataclysmic variable (CV) binary systems is investigated. We show that CB mass surface densities sufficient to influence the evolution rate are plausibly provided by the outflows…

Astrophysics · Physics 2009-10-31 H. C. Spruit , Ronald E. Taam

The theoretical and observed populations of pre-cataclysmic variables (pre-CVs) are dominated by systems with low-mass white dwarfs (WDs), while the WD masses in CVs are typically high. In addition, the space density of CVs is found to be…

Solar and Stellar Astrophysics · Physics 2016-01-27 G. Nelemans , L. Siess , S. Repetto , S. Toonen , E. S. Phinney