Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-11-27
Astronomy and Astrophysics
Astrophysics
7 pages, one figure, in proceedings of "Massive Stars in Interacting Binaries" (Lac Sacacomie, Quebec, 16-20 Aug 2004) eds. Ni
Scientific paper
Recent observations of the Arches cluster located within a projected distance of 30 pc from the dynamical center of the Galaxy have shown the presence of diffuse and discrete X-ray continuum emission, diffuse 6.4keV line emission as well as thermal and nonthermal radio continuum emission. This young and dense stellar cluster is also recognized to be within the 95% error circle of an identified steady source of $\gamma$-ray emission associated with the EGRET source 3EG J1746--2851. Much of the thermal and nonthermal emission can be explained by shocked gas resulting from colliding winds originating from massive binaries within the cluster. In particular, we argue that nonthermal particles could upscatter the radiation field of the cluster by ICS and account for the $\gamma$-ray emission. We also consider that the fluorescent 6.4 keV line emission may be the result of the impact of low-energy relativistic particles on neutral gas distributed in the vicinity of the cluster. Lastly, we sketch an interpretation in which young stellar clusters and massive young binary systems are responsible for the origin of nonthermal radio filaments found throughout the inner 300pc of the Galaxy. The collimation of the nonthermal filaments may be done in the colliding wind region by the ionized surface of individual mass-losing stars of massive binary systems. In this picture, a WR-type phenomenon is expected to power a central star burst in the Galactic center in order to account for all the observed filaments.
No associations
LandOfFree
Young Stellar Clusters, WR-type Phenomenon and the Origin of the Galactic Center Nonthermal Radio Filaments does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Young Stellar Clusters, WR-type Phenomenon and the Origin of the Galactic Center Nonthermal Radio Filaments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Young Stellar Clusters, WR-type Phenomenon and the Origin of the Galactic Center Nonthermal Radio Filaments will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-691475