1D Spectral Modeling of Accretion Disks Around Compact Stars

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1D Spectral Modeling of Accretion Disks Around
Compact Stars

• T. Nagel, S. Hartmann, T. Rauch, K. Werner
• University of Tübingen, Germany

• Basis Computation of vertical structure and
  spectrum of a-disks in radial symmetry. We
  demonstrate several applications
• Spectral modeling of dwarf nova outbursts (disk
  instability in CVs)
• He-dominated disks in compact CVs (AM CVn stars,
  Porb5-65 min)
• C-O-dominated disks around NSs in ultracompact
  LMXBs with stripped WD donors (Porblt80 min)
• Fe-dominated SN-fallback disks. Application to
  SN1987A yields upper limit for the size of such a
  disk from the absence of a point source in the
  SNR (Rlt70,000 km)
• Gaseous metal disks around single white dwarfs
  (probably disrupted asteroids)