July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Linking gamma-ray observations with models of eta Carinae

Aug 1, 2015, 12:00 PM
Amazon (World Forum)


World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Oral contribution GA-TH Parallel GA09 Binaries


Dr Olaf Reimer (Innsbruck University)


Eta Carinae, the so-far only colliding wind binary detected at high-energy gamma-rays, has been observed over its first complete orbit since launch of the Fermi Gamma-ray Space Telescope. Different emission scenarios are proposed to explain the temporal and spectro-temporal features, by either postulating strong dominance of hadronic particle populations, a single emitting particle population in combination with significant absorption by γ-γ pair production, or mixed emission scenarios. The interplay between different particle populations as function of energy, orbital phase, inclination etc. is best studied by numerical hydrodynamics in conjunction with particle transport models. We demonstrate that transitions between hadron-dominated to lepton-dominated high-energy emission are predicted in colliding wind binary scenarios depending on orbital parameters. The complex picture emerging from such simulations will be discussed and linked to proposed models for eta Car.
Collaboration -- not specified --
Registration number following "ICRC2015-I/" 599

Primary author

Dr Olaf Reimer (Innsbruck University)


Dr Anita Reimer (University of Innsbruck) Dr Klaus Reitberger (Innsbruck University) Dr Ralf Kissmann (Innsbruck University)

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