S'authentifier

Cosmic rays & their interstellar medium environment CRISM-2011

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

Inquiries

Session

Interstellar medium

28 juin 2011, 16:25
Montpellier, France

Montpellier, France

Polytech Université Montpellier II

Description

Interstellar medium properties and high-energy processes

Documents de présentation

Aucun document.

  1. 111. Magnetic fields in the interstellar medium
    Dr Katia Ferrière (IRAP Toulouse)
    28/06/2011 16:25
    I will review the observational properties of interstellar magnetic fields in the disk and halo of our Galaxy. These properties are inferred from a variety of observational methods, primarily based on polarization of starlight, polarization of dust infrared emission, Zeeman splitting, Faraday rotation, and synchrotron emission. I will discuss each of these methods in some detail and...
    Go to contribution page
  2. 112. Fermi gamma-ray `bubbles' from stochastic acceleration of electrons
    Dr Philipp Mertsch (Rudolf Peierls Centre for Theoretical Physics Oxford)
    28/06/2011 17:00
    Gamma-ray data from Fermi-LAT reveal a bi-lobular structure extending up to 50 degrees above and below the galactic centre, which presumably originated in some form of energy release there less than a few million years ago. It has been argued that the gamma-rays arise from hadronic interactions of high energy cosmic rays which are advected out by a strong wind, or from inverse-Compton...
    Go to contribution page
  3. 113. The CO-H2 conversion factor of diffuse ISM: Bright 12CO emission also traces diffuse gas
    Dr Jérome Péty (IRAM & Observatoire de Paris)
    28/06/2011 17:20
    Summarizing 20 years of efforts, we will quantify the CO luminosity and CO-H2 conversion factor applicable to diffuse but partially molecular ISM when H2 and CO are present but C+ is the dominant form of gas-phase carbon. To do this, we will discuss galactic lines of sight observed in HI, HCO+ and CO where CO emission is present but the intervening clouds are diffuse (locally Av ~ 1 mag) with...
    Go to contribution page
  4. 114. Turbulence in the interstellar medium
    Dr Patrick Hennebelle (LERMA Paris)
    28/06/2011 17:40
  5. 115. Non-thermal emission from molecular clouds in the Galactic centre: Illumination vs cosmic rays.
    Dr Régis Terrier (APC Paris)
    28/06/2011 18:15
    The molecular clouds at the Galactic centre (GC), Sgr B2 among others, emit strong Fe Kalpha photons as well as hard X-rays up to 100 keV. The origin of this emission has been the subject of a controversy. Irradiation by subrelativistic cosmic rays, electrons or protons, might account for the observed spectra, but it can also be the result of the illumination of the clouds by a past high...
    Go to contribution page
Ordre du jour en construction...