Sign on

SAO/NASA ADS arXiv e-prints Abstract Service

· Find Similar Abstracts (with default settings below)
· arXiv e-print (arXiv:0801.2168)
· Citations to the Article (1) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Non-thermal Emission in Sagittarius B?
Authors:
Lang, Cornelia C.; Palmer, Patrick; Goss, W. M.
Publication:
eprint arXiv:0801.2168
Publication Date:
01/2008
Origin:
ARXIV
Keywords:
Astrophysics
Comment:
11 pages, 1 figure; invited review paper for the Galactic Center Newsletter (Jan 2008) see http://www.aoc.nrao.edu/~gcnews/index.shtml
Bibliographic Code:
2008arXiv0801.2168L

Abstract

In this paper, we summarize three recent papers which point out possible non-thermal radio emission arising from the Sgr B region in the Galactic Center. We also present a high-resolution and sensitive image of the Sgr B region at 1.4 GHz made with the VLA. Using this image and a matched-array 327 MHz VLA image, we derive a thermal spectrum for the Sgr B complex and suggest that the radio emission is a mixture of optically thin and optically thick emission over the frequency range discussed here (255 MHz to 1.4 GHz). In addition, we show that the the apparent non-thermal power law slope for the Sgr B2 continuum temperature observed by the GBT is likely determined by source structure and provides limited information about the physical processes in the Sgr B region. While the structure Sgr B region is complex and furthermore confused by the Galactic background, there does not appear to be substantial evidence for a non-thermal component in Sgr B.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints