Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...322..242k&link_type=abstract
Astronomy and Astrophysics, v.322, p.242-255
Astronomy and Astrophysics
Astrophysics
21
Acceleration Of Particles, Magnetic Fields -Turbulence, Cataclysmic Variables, Stars: Individual: Ae Aqr, Radio Continuum: Stars
Scientific paper
We propose that the radio outbursts of the cataclysmic variable AE Aqr are caused by eruptions of bubbles of fast particles from a magnetosphere surrounding the white dwarf. We investigate the acceleration process of magnetic pumping in the magnetosphere which is periodically driven both by the relative motion with the companion and with the infalling spray of gas at the spin frequency of the white dwarf. As the accretion rate is relatively low, the conversion of spin energy into acceleration (rather than heating) of electrons and protons can be efficient. The accelerated particles are trapped in the white dwarf magnetosphere until their total energy content becomes comparable to that of the trapping magnetic field structure and a MHD instability sets in. Synchrotron radiation is emitted in the expelled expanding plasmoid at radio and down to millimetric wavelengths. We find that there is sufficient energy transferred from the rotation energy of the rapidly-spinning white dwarf to fast particles by magnetic pumping to explain quiescent and flaring radio emissions.
Abada-Simon Meil
Fletcher Lauren
Horne Keith D.
Kuijpers Jan
Raadu Michael A.
No associations
LandOfFree
Magnetic pumping in the cataclysmic variable AE Aquarii. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetic pumping in the cataclysmic variable AE Aquarii., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic pumping in the cataclysmic variable AE Aquarii. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1471744