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The Nature of the Galactic Center Arc

Serabyn, E. (1996) The Nature of the Galactic Center Arc. In: Unsolved Problems of the Milky Way. IAU Symposium Proceedings Series. No.169. Springer , Dordrecht, The Netherlands, pp. 263-269. ISBN 978-0-7923-4040-9.

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Ever since the Galactic Center Arc was resolved into its component filaments a decade ago, it has been clear that its linear structure arises from the influence of a strong magnetic field. However, the origin and nature of the contributory phenomena have remained elusive. Since what is seen is synchrotron emission from relativistic particles, of prime interest is a knowledge of the acceleration mechanism involved. Interferometric imaging of the molecular gas in the vicinity of the Arc has now provided a tantalizing clue to the Arc’s origin: molecular clumps coinciding with the endpoints of a number of the Arc’s filaments point to these clumps as the source of the relativistic particles. This suggests that as dense molecular clumps course through the ambient magnetic field at the Galactic Center, magnetic energy is liberated in their leading layers via field reconnection, precipitating rapid acceleration of free charges to high energy.

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Additional Information:© International Astronomical Union • Provided by the NASA Astrophysics Data System.
Group:Owens Valley Radio Observatory (OVRO)
Series Name:IAU Symposium Proceedings Series
Issue or Number:169
Record Number:CaltechAUTHORS:20160608-191913876
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:67794
Deposited By: Joy Painter
Deposited On:09 Jun 2016 16:21
Last Modified:03 Oct 2019 10:08

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