Fireball Models for Flares in AE Aquarii.

KJ Pearson, Keith Douglas Horne, W Skidmore

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

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, length-scale 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.

Original languageEnglish
Pages (from-to)1067-1083
Number of pages17
JournalMonthly Notices of the Royal Astronomical Society
Volume338
Issue number4
Publication statusPublished - 1 Feb 2003

Keywords

  • accretion, accretion discs
  • radiative transfer
  • stars : flare
  • stars : individual : AE Aqr
  • novae, cataclysmic variables
  • CATACLYSMIC VARIABLES
  • RATE COEFFICIENTS
  • IONIZATION EQUILIBRIUM
  • RECOMBINATION RATES
  • THIN PLASMAS
  • UV SPECTRUM
  • ATOMIC DATA
  • IONS
  • ELEMENTS
  • OSCILLATIONS

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