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Methanol masers in Galactic center region supernova remnants

Published online by Cambridge University Press:  22 May 2014

Y. M. Pihlström ,
B. C. McEwen  and
L. O. Sjouwerman
Y. M. Pihlström
Affiliation:
Dept. of Physics & Astronomy, University of New Mexico, 1919 Lomas Blvd. NE, Albuquerque, NM 87122 email: ylva@unm.edu
B. C. McEwen
Affiliation:
Dept. of Physics & Astronomy, University of New Mexico, 1919 Lomas Blvd. NE, Albuquerque, NM 87122 email: ylva@unm.edu
L. O. Sjouwerman
Affiliation:
National Radio Astronomy Observatory, P. O. Box O, 1003 Lopezville Road, Socorro, NM 87801, USA
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Abstract

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Methanol masers can be used to constrain densities and estimate kinematical distances to supernova remnants (SNRs), important parameters in cosmic ray acceleration models. With the goal of testing those models both for SNRs inside and outside the Galactic center (GC) region, we have used the Very Large Array to search for 36 GHz and 44 GHz methanol lines in Galactic SNRs. We report on the overall results of the maser search, and in particular the results of the GC SNR G1.4–0.1 in which more than 40 masers were found. They may be due to interactions between the SNR and at least two separate molecular clouds. Methanol masers were also detected in W28 and in Sgr A East.

Keywords

masers — (ISM:) supernova remnants — ISM: individual (G1.4–0.1)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S303: The Galactic Center: Feeding and Feedback in a Normal Galactic Nucleus , October 2013 , pp. 156 - 158
Copyright
Copyright © International Astronomical Union 2014 

References

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