Testing the disk instability model of cataclysmic variables
نویسندگان
چکیده
منابع مشابه
Floquet analysis of disk instabilities and superhumps in Cataclysmic Variables
We analyze the dynamical stability of hydrodynamical flows in the equatorial plane of a thin axisymmetric accretion disk in close binary systems. The periodic tidal forces of the companion star induce parametric instabilities, which are characterized by the Floquet exponent. We propose that the onset of superhumps can be understood in this context. Comparing our model with well-known systems le...
متن کاملCataclysmic variables
Cataclysmic variables are binary stars in which a relatively normal star is transferring mass to its compact companion. This interaction gives rise to a rich range of behaviour, of which the most noticeable are the outbursts that give the class its name. Novae belong to the class, as do the less well known dwarf novae and magnetic systems. Novae draw their energy from nuclear reactions, while d...
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The present status of the period studies of cataclysmic variables is briefly reviewed, mainly from the observational point of view. A few comments on individual objects include EM Cyg, Z Cha, WZ Sge and AM CVn.
متن کاملThe Winds of Cataclysmic Variables
We present an observational and theoretical review of the winds of cataclysmic variables (CVs). Specifically, we consider the related problems of the geometry, ionization state, and mass-loss rate of the winds of CVs. We present evidence of wind variability and discuss the results of studies of eclipsing CVs. Finally, we consider the properties of accretion disk wind and magnetic wind models. S...
متن کاملReinsch Modelling the Spectral Signatures of Accretion Disk Winds in Cataclysmic Variables
Bipolar outflows are known to be present in many diskaccreting astrophysical systems. In disk-dominated cataclysmic variables, these outflows are responsible for most of the features in UV and FUV spectra. However, there have been very few attempts to model the features that appear in the spectra of disk-accreting cataclysmic variables quantitatively. The modelling that has been attempted has b...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2018
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201833372