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Cosmic rays & their interstellar medium environment CRISM-2011

26 juin 2011 à 1 juillet 2011
Montpellier, France
Fuseau horaire Europe/Paris

Inquiries

Session

Massive stars and cosmic-ray sources

Instabilities
28 juin 2011, 09:00
Montpellier, France

Montpellier, France

Polytech Université Montpellier II

Documents de présentation

Aucun document.

  1. 14. Winds of massive stars
    Dr Joachim Puls
    28/06/2011 09:00
  2. 15. Propagation of supernova blastwaves in the circum- and interstellar medium
    Dr Vikram Dwarkadas
    28/06/2011 09:35
    I will review the evolution of SN shock waves in the surrounding medium, using analytic solutions and numerical simulations. I will discuss both white-dwarf and core-collapse SNe, the medium surrounding these SNe, and their evolution through various phases.
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  3. 105. On the origin and composition of Galactic cosmic rays
    Dr Nikos Prantzos (IAP Paris)
    28/06/2011 10:10
    I explore the implications of a model in which cosmic rays are accelerated by the forward shocks of supernovae exploding within massive star winds, by using realistic stellar models with mass loss and rotation. Using the same models, I also show that the idea that the bulk of Galactic cosmic rays are accelerated in superbubbles fails to reproduce the key observable of GCR composition,...
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  4. 49. Role of ejecta clumping and back-reaction of accelerated cosmic rays in the evolution of supernova remnants
    Dr Salavtore Orlando (INAF osservatorio di Palermo)
    28/06/2011 10:30
    The thermal structure of the post-shock region of a young supernova remnant (SNR) is heavily affected by two main physical effects, namely the back-reaction of accelerated cosmic rays and the Rayleigh-Taylor instabilities developing at the contact discontinuity between the ejecta and the shocked interstellar medium (ISM). In this contribution, we investigate the role played by both physical...
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  5. 17. Fermi/LAT view of eta Carinae
    Dr Christian Farnier (ISDC Geneva)
    28/06/2011 11:20
    One of the most outstanding stellar object in our Galaxy, eta Carinae, a colliding wind binary with the largest mass loss rate observed, presents a hard X-ray emission and is therefore a primary candidate to search for particle acceleration by probing its gamma-ray emission. The detection of eta Carinae at high energy through analysis of Fermi/LAT data between 0.2 to 100 GeV was reported in...
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  6. 104. Modeling supernova remnants: effects of diffusive cosmic-ray acceleration on the evolution, application to observations.
    Dr Daria Kosenko (Astronomical Institut Utrecht)
    28/06/2011 11:40
    We present numerical models for supernova remnant evolution, using a new version of the hydrodynamical code SUPREMNA. We added cosmic ray diffusion equation to the code scheme, employing two-fluid approximation. We investigate the dynamics of the simulated supernova remnants with different values of cosmic ray acceleration efficiency and diffusion coefficient. We compare the...
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  7. 16. The sources of galactic cosmic rays
    Prof. Andrei Bykov
    28/06/2011 12:00
    Many of the core-collapsed supernovae are expected to explode within or in the vicinity of their parent clouds. The manifestation of the supernova remnants (SNRs) can differ substantially for different type of their progenitor stars. For the relatively low mass progenitor the stellar wind and photoionizing radiation are not sufficient to clear up substantially the surrounding cloud...
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