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Related papers: AE Aquarii represents a new subclass of Cataclysmi…

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The nova-like variable AE Aquarii is a close binary system containing a red dwarf and a magnetized white dwarf rotating with the period of 33 seconds. A short spin period of the white dwarf is caused by an intensive mass exchange between…

High Energy Astrophysical Phenomena · Physics 2015-06-19 N. G. Beskrovnaya , N. R. Ikhsanov

Simulation of Doppler H-alpha tomogram of the nova-like star AE Aquarii suggests that the dipole magnetic moment of the white dwarf is close to 1.5E+34 G cm^3. This is consistent with the lower limit to the magnetic field strength of the…

Astrophysics · Physics 2008-09-09 N. R. Ikhsanov , N. G. Beskrovnaya

The structure of plasma flows in close binary systems in which one of the components is a rapidly rotating magnetic white dwarf is studied. The main example considered is the AE Aquarii system; the spin period of the white dwarf is about a…

Solar and Stellar Astrophysics · Physics 2016-06-03 P. B. Isakova , N. R. Ikhsanov , A. G. Zhilkin , D. V. Bisikalo , N. G. Beskrovnaya

Marsh et al. (2016) have recently reported the discovery of a radio-pulsing white dwarf in the cataclysmic variable AR Sco. The period of pulsations which are also seen in the optical and UV is about 117 seconds. High intensity of pulsing…

High Energy Astrophysical Phenomena · Physics 2016-12-26 N. G. Beskrovnaya , N. R. Ikhsanov

AE Aqr is an unusual close binary system with a very short white dwarf spin period, a high spin-down rate, a relatively low quiescent luminosity, and clear pulse signals. The exact nature of the large spin-down power has not been well…

Astrophysics · Physics 2009-10-31 Chul-Sung Choi , Insu Yi

AE Aqr objects are a class of cataclysmic variable stars in which the rapidly rotating magnetosphere of the white dwarf (WD) primary centrifugally expels most infalling gas before it can accrete onto the WD. The expulsion of the accretion…

Solar and Stellar Astrophysics · Physics 2020-10-02 Colin Littlefield , Peter Garnavich

AE Aquarii is a propeller system. It has the shortest spin period among cataclysmic variables, and this is increasing on a 10^7 yr timescale. Its UV spectrum shows very strong carbon depletion vs nitrogen and its secondary mass indicates a…

Astrophysics · Physics 2009-11-07 K. Schenker , A. R. King , U. Kolb , G. A. Wynn , Z. Zhang

The magnetic cataclysmic variable AE Aquarii hosts a rapidly rotating white dwarf which is thought to expel most of the material streaming onto it. Observations of AE Aqr have been obtained in the wavelength range of 5 - 70 microns with the…

Astrophysics · Physics 2011-02-11 G. Dubus , R. E. Taam , C. Hull , D. M. Watson , J. C. Mauerhan

For decades, AE Aquarii (AE Aqr) has been the only cataclysmic variable star known to contain a magnetic propeller: a persistent outflow whose expulsion from the binary is powered by the spin-down of the rapidly rotating, magnetized white…

Solar and Stellar Astrophysics · Physics 2021-08-18 Peter Garnavich , Colin Littlefield , R. M. Wagner , Jan van Roestel , Amruta D. Jaodand , Paula Szkody , John R. Thorstensen

AE Aquarii is a cataclysmic variable with the fastest known rotating magnetized white dwarf (P_spin = 33.08 s). Compared to many intermediate polars, AE Aquarii shows a soft X-ray spectrum with a very low luminosity (L_X ~ 10^{31} erg/s).…

The flow structure in magnetic cataclysmic variables was investigated taking into account the effects of strong magnetic field and fast rotation of the white dwarf. We modeled the AE Aqr system as a unique object that has the rotation…

Solar and Stellar Astrophysics · Physics 2015-06-18 Polina Isakova , Andrey Zhilkin , Dmitry Bisikalo

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…

Astrophysics · Physics 2009-11-07 Nazar R. Ikhsanov , Nina G. Beskrovnaya

We examine the flaring behaviour of the cataclysmic variable AE~Aqr in the context of the `magnetic propeller' model for this system. The flares are thought to arise from collisions between high density regions in the material expelled from…

Astrophysics · Physics 2009-11-07 K. J. Pearson , Keith Horne , Warren Skidmore

AE Aqr was until recently the only known magnetic cataclysmic variable (MCV) containing a rapidly spinning (33.08 s) white dwarf (WD). Its radio emission is believed to be a superposition of synchrotron emitting plasmoids, because it has a…

Solar and Stellar Astrophysics · Physics 2022-01-19 Paul E. Barrett

AE Aquarii (AE Aqr) is a cataclysmic binary hosting one of the fastest rotating (P$_{\rm spin}$ = 33.08 s) white dwarfs known. Based on seven years of Fermi Large Area Telescope (LAT) Pass 8 data, we report on a deep search for gamma-ray…

High Energy Astrophysical Phenomena · Physics 2016-11-23 Jian Li , Diego F. Torres , Nanda Rea , Emma de Ona Wilhelmi , Alessandro Papitto , Xian Hou , Christopher W. Mauche

The observed properties of the close binary AE Aqr indicate that the mass transfer in this system operates via the Roche lobe overflow mechanism, but the material transferred from the normal companion is neither accreted onto the surface of…

Astrophysics · Physics 2009-11-10 N. R. Ikhsanov , V. V. Neustroev , N. G. Beskrovnaya

The process of energy release in the magnetosphere of a fast rotating, magnetized white dwarf can be explained in terms of the canonical spin-powered pulsar model. Applying this model to the white dwarf companion of the low mass close…

Astrophysics · Physics 2009-11-11 N. R. Ikhsanov , P. L. Biermann

We report time-series photometry of the quiescent optical counterpart of the EUV transient RE J1255+266. The star appears as a DA white dwarf with bright emission lines and a complex spectrum of periodic signals in its light curve. A signal…

Astrophysics · Physics 2009-11-10 Joseph Patterson , John Thorstensen , Jonathan Kemp

We develop a model of the white dwarf (WD) - red dwarf (RD) binaries AR Sco and AE Aqr as systems in a transient propeller stage of highly asynchronous intermediate polars. The WDs are relatively weakly magnetized with magnetic field of…

High Energy Astrophysical Phenomena · Physics 2020-04-27 Maxim Lyutikov , Maxim Barkov , Matthew Route , Dinshaw Balsara , Peter Garnavich , Colin Littlefield

We have developed a numerical MHD model of the propeller candidate star AE Aqr using axisymmetric magneto-hydrodynamic (MHD) simulations. We suggest that AE Aqr is an intermediate polar-type star, where the magnetic field is relatively weak…

Solar and Stellar Astrophysics · Physics 2019-06-05 A. A. Blinova , M. M. Romanova , G. V. Ustyugova , A. V. Koldoba , R. V. E. Lovelace
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