G0.087-0.087, a highly polarized flat spectrum filament near the Galactic Centre Arc
Abstract
32 GHz observations with the Effelsberg 100-m telescope revealed a highly polarized Galactic Centre filament: G0.087-0.087, running parallel to the well-known Arc structure. It has a similar flat spectrum, but it is an order of magnitude weaker. G0.087-0.087 is about 2.5' or 6.2 pc long and located at the western boundary of the expanding molecular cloud G0.11-0.11. This unusual cloud is also visible in X-rays and known to interact on its eastern periphery with the Arc. Acceleration of highly relativistic particles at the surface of G0.11-0.11 seems necessary to explain the properties of both structures. The new filament supports previous findings on the existence of a strong poloidal magnetic field throughout the Galactic Centre region.
Cite
@article{arxiv.astro-ph/0302348,
title = {G0.087-0.087, a highly polarized flat spectrum filament near the Galactic Centre Arc},
author = {W. Reich},
journal= {arXiv preprint arXiv:astro-ph/0302348},
year = {2008}
}
Comments
4 pages with 4 figures. Accepted for publication in A&A