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Supernova OH (1720 MHz) masers in Sgr A East, W28 and G359.1-0.5

Published online by Cambridge University Press:  03 August 2017

F. Yusef-Zadeh ,
D.A. Roberts ,
Geoff Bower ,
M. Wardle  and
W.M. Goss
F. Yusef-Zadeh
Affiliation:
Department of Physics and Astronomy, Northwestern University, Evanston, IL. 60208
D.A. Roberts
Affiliation:
Department of Physics and Astronomy, Northwestern University, Evanston, IL. 60208
Geoff Bower
Affiliation:
UC Berkeley, Berkeley, CA 94720
M. Wardle
Affiliation:
School of Physics, University of Sydney, NSW 2006, Australia
W.M. Goss
Affiliation:
NRAO, P.O. Box O, Socorro, New Mexico 87801

Abstract

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A new class of OH (1720 MHz) masers unaccompanied by main-line transitions have recently been discovered (Frail, Goss and Slysh 1994). These masers lie at the interface between supernova remnants (SNRs) interacting with molecular clouds. We discuss three new aspects of SN masers found in the direction toward the Galactic center: (i) the detection of a new −130 kms−1 OH (1720 MHz) maser in the southern lobe of the molecular ring at the Galactic center: (ii) the detection of extended OH (1720 MHz) maser emission from W28 accompanying the compact maser sources and (iii) the detection of linear polarization of the brightest OH (1720 MHz) maser in SNR G359.1-0.5.

Type
Part 1. Star Formation
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 212 - 216
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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