Fireball Models for Flares in AE Aquarii
arXiv:astro-ph/0211268 · doi:10.1046/j.1365-8711.2003.06079.x
Abstract
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 the system after interaction with the rapidly rotating magnetosphere of the white dwarf. We calculate the first quantitative models for the flaring and calculate the time-dependent emergent optical spectra from the resulting hot, expanding ball of gas. We compare the results under different assumptions to observations and derive values for the mass, lengthscale and temperature of the material involved in the flare. We see that the fits suggest that the secondary star in this system has Population II composition.
19 pages, 24 figures
References in corpus (3)
- Atomic Data for Astrophysics. II. New Analytic Fits for Photoionization Cross Sections of Atoms and Ions
- Atomic data for astrophysics. I. Radiative recombination rates for H-like, He-like, Li-like and Na-like ions over a broad range of temperature
- Russell Lecture: Dark Star Formation and Cooling Instability
Cited by in corpus (13)
- The binary millisecond pulsar PSR J1023+0038 during its accretion state - I. Optical variability
- Found: a rapidly spinning white dwarf in LAMOST J024048.51+195226.9
- Long-Term evolution of Discs around Magnetic Stars
- Roche tomography of cataclysmic variables -- III. Starspots on AE Aqr
- On the mass transfer in AE Aquarii
- The White Dwarf in AE Aqr Brakes Harder
- Chandra High Energy Transmission Grating Spectrum of AE Aquarii
- AE Aquarii represents a new subclass of Cataclysmic Variables
- A Flare of AE Aquarii Observed with XMM-Newton
- Fireballs, Flares and Flickering: A Semi-analytic, LTE, Explosive Model from Accretion Disks to Supernovae
- Comparisons of MHD Propeller Model with Observations of Cataclysmic Variable AE Aqr
- Simultaneous UBVRI observations of the cataclysmic variable AE Aquarii: temperature and mass of fireballs
- The cataclysmic variable AE Aquarii: B-V colour of the flares