Cosmic rays & their interstellar medium environment CRISM-2011

Session

Poster session

30 juin 2011, 18:00

Montpellier, France

118. An Integral View of Shocks: VIMOS-IFU Observations of SN1006

Mme Sladjana Nikolic (MPIA Heidelberg)

30/06/2011 18:00

Supernova remnants are laboratories for studying optical shocks. Shocks with velocities of a few hundred km/s (or more) produce two-component Hα lines: a narrow spike atop a broad base. The widths of these lines serve as thermometers for the pre- and post-shock ambient interstellar medium, the ratio of the line strengths is a diagnostic for plasma conditions in the shock, and the offset...

120. Ion irradiation experiments relevant to the astrophysics ices

M. Christian Fernando MEJíA GUAMáN (PUC Rio)

30/06/2011 18:05

Methane (CH$_{4}$) and methanol (CH$_{3}$OH) ices are present in various astrophysical environments, from dense molecular clouds to several small objects in the outer solar system, in particular on Saturn satellite Triton and to be a constituent of the icy mantle on interstellar grain [1]. There is a clear lack of information about the phenomena induced by the heavy-ion component of...

121. Cosmic ray-induced carbon isotope fractionation of molecules in dense dark gas.

Dr Harvey Liszt (NRAO)

30/06/2011 18:10

Cosmic rays induce a low level of ionization of helium in dense dark gas where the main sink of He+ is He+ + CO -> C+ + O + He, at least until CO depletes onto grains. So C+ is introduced into the gas relatively quickly, but the carbon exchange reaction of C+ and CO selectively returns 13C+ to CO (because it is more tightly bound than 12CO, by 35K), depleting the C+ pool in 13C+. ...

122. AGILE observations of middle-aged SNRs

Dr Giuliani Andrea

30/06/2011 18:15

The gamma-ray imager on-board the AGILE satellite detected several middle-aged Supernova Remnants. Unlike young SNRs, these objects are bright also for energies greater than some tens of MeV. Here we present an overview of the AGILE observations of middle-aged SNRs in the "low energy" band (50-400 MeV) and the spectral and morphological studies performed for some of them (IC443,...

123. Unraveling HESS J1745-303 with new results from the Fermi-LAT telescope

Dr Andrea Caliandro

30/06/2011 18:20

HESS J1745-303 is an extended, unidentified VHE (very high energy) gamma-ray source located at the edge of the giant molecular ring surrounding the Galactic Center. Unraveling the nature of this emission is not easy in this region densely populated by plausible VHE emission candidates, like supernova remnants, pulsar wind nebulae, and X-ray binaries. Recently, an excess positionally...