The accretion column of AE Aqr

CLAUDIA V. RODRIGUES; JAZIEL COELHO; CARLOS DE ARAUJO; G. J. M. LUNA; KARLEYNE SILVA; JOAQUIM COSTA; ISABEL J. LIMA

Congreso; The X-ray Universe 2017; 2017

AE Aqr is a magnetic cataclysmic variable, whose white dwarf rotates at the very fast rate of 33 s modulating the flux from high energies to optical wavelengths. There are many studies about the origin of its emission, which consider emission from a rotating magnetic field or from an accretion column. Recent observations have not found emission from AE Aqr in gamma rays, a shortcoming of the pulsar-like model. Furthermore, X-ray data can be fit using thermal models. Here we present a successful modeling of AE Aqr phase-resolved X-ray emission using the Cyclops code, which considers the emission of a magnetic accretion column. The model takes into consideration the 3D geometry of the system, allowing to properly represent the white-dwarf self eclipse, the pre-shock column absorption, and the varying density and temperature of a tall accretion column. To our knowledge, we present the first physical modeling of AE Aqr phase-dependent emission in high energies