Isabelle A. Grenier

A composite CO survey of the entire milky way

Large-scale CO surveys of the entire Galactic plane and specific nearby clouds have been combined to produce a panorama of the entire Milky Way in molecular clouds at an angular resolution of 1/2°. Covering 10°–20° in latitude at all longitudes and all large, nearby clouds at higher latitude, the composite survey is the only molecular line survey to date with sky coverage and resolution comparable to that of the early 21 cm surveys.

3D dynamical evolution of the interstellar gas in the Gould Belt

The dynamical evolution of the Gould Belt has been modelled in 3D and compared to the spatial and velocity distributions of all HI and H 2 clouds found within a few hundred parsecs from the Sun and to the Hipparcos distances of the nearby OB associations. The model describes the expansion of a shock wave that sweeps momentum from the ambient medium. It includes the effects of the Galactic differential rotation and its gravitational torque, as well as interstellar density gradients within and away from the Galactic plane, possible fragmentation and drag forces in the late stages, and an initial rotation of the system. The evolved Belt geometry and velocity field have been fitted to the directions and velocities of the nearby clouds using a maximum-likelihood test. In order to do so, local clouds have been systematically searched for in the available HI and CO surveys. The likelihood function also included a distance estimate for a subset of well-known clouds.u2029The best fit to the data yields values for the current Belt semi-axes of

Cosmic-ray propagation properties for an origin in Supernova remnants

(373 pm 5)

EGRET Observations of Monoceros: Diffuse Gamma-Ray Emission in the Outer Galaxy

pc and

On the local birth place of Geminga

(233 pm 5)

Investigating the EGRET-radio galaxies link with INTEGRAL: The case of 3EG J1621+8203 and NGC 6251

pc, and an inclination of

The imprint of Gould's Belt on the local cosmic-ray electron spectrum

17.2degr pm 0.5degr

INTEGRAL observation of 3EG J1736-2908

. These characteristics are consistent with earlier results, but a different Belt orientation has been found because of the presence of new molecular clouds and the revised distance information: the Belt centre currently lies

UNIDENTIFIED EGRET SOURCES IN THE GALAXY

(104 pm 4)

EGRET unidentified sources

pc away from the Sun, towards the Galactic longitude