Extended OH(1720 MHz) maser emission from supernova remnants

J. W. Hewitt; F. Yusef-Zadeh; M. Wardle; D. A. Roberts

doi:10.1017/S1743921307013178

Extended OH(1720 MHz) maser emission from supernova remnants

J. W. Hewitt^*, F. Yusef-Zadeh, M. Wardle, D. A. Roberts

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Compact OH(1720 MHz) masers have proven to be excellent signposts for the interaction of supernova remnants with adjacent molecular clouds. Less appreciated has been the weak, extended OH(1720 MHz) emission which accompanies strong compact maser sources. Recent single-dish and interferometric observations reveal the majority of maser-emitting supernova remnants(SNRs) have accompanying regions of extended maser emission. Enhanced OH abundance created by the passing shock is observed both as maser emission and absorption against the strong background of the remnant. Modeling the observed OH profiles gives an estimate of the physical conditions in which weak, extended maser emission arises. I will discuss how we can realize the utility of this extended maser emission, particularly the potential to measure the strength of the post-shock magnetic field via Zeeman splitting over these large-scales.

Original language	English (US)
Pages (from-to)	307-311
Number of pages	5
Journal	Proceedings of the International Astronomical Union
Volume	3
Issue number	S242
DOIs	https://doi.org/10.1017/S1743921307013178
State	Published - Mar 2007

Keywords

ISM: magnetic fields
Masers
Supernova remnants

ASJC Scopus subject areas

Medicine (miscellaneous)
Astronomy and Astrophysics
Nutrition and Dietetics
Public Health, Environmental and Occupational Health
Space and Planetary Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1017/S1743921307013178

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@article{7654e048acf64d57b627f77abe5cd34b,

title = "Extended OH(1720 MHz) maser emission from supernova remnants",

abstract = "Compact OH(1720 MHz) masers have proven to be excellent signposts for the interaction of supernova remnants with adjacent molecular clouds. Less appreciated has been the weak, extended OH(1720 MHz) emission which accompanies strong compact maser sources. Recent single-dish and interferometric observations reveal the majority of maser-emitting supernova remnants(SNRs) have accompanying regions of extended maser emission. Enhanced OH abundance created by the passing shock is observed both as maser emission and absorption against the strong background of the remnant. Modeling the observed OH profiles gives an estimate of the physical conditions in which weak, extended maser emission arises. I will discuss how we can realize the utility of this extended maser emission, particularly the potential to measure the strength of the post-shock magnetic field via Zeeman splitting over these large-scales.",

keywords = "ISM: magnetic fields, Masers, Supernova remnants",

author = "Hewitt, {J. W.} and F. Yusef-Zadeh and M. Wardle and Roberts, {D. A.}",

note = "Funding Information: We thank Ron Maddalena, Jim Braatz and the GBT operators for their help throughout these observations. Support for this work was provided by the NSF through award GSSP06-0009 from the NRAO. JWH acknowledges partial support from an IAU Grant.",

year = "2007",

month = mar,

doi = "10.1017/S1743921307013178",

language = "English (US)",

volume = "3",

pages = "307--311",

journal = "Proceedings of the International Astronomical Union",

issn = "1743-9213",

publisher = "Cambridge University Press",

number = "S242",

}

TY - JOUR

T1 - Extended OH(1720 MHz) maser emission from supernova remnants

AU - Hewitt, J. W.

AU - Yusef-Zadeh, F.

AU - Wardle, M.

AU - Roberts, D. A.

N1 - Funding Information: We thank Ron Maddalena, Jim Braatz and the GBT operators for their help throughout these observations. Support for this work was provided by the NSF through award GSSP06-0009 from the NRAO. JWH acknowledges partial support from an IAU Grant.

PY - 2007/3

Y1 - 2007/3

N2 - Compact OH(1720 MHz) masers have proven to be excellent signposts for the interaction of supernova remnants with adjacent molecular clouds. Less appreciated has been the weak, extended OH(1720 MHz) emission which accompanies strong compact maser sources. Recent single-dish and interferometric observations reveal the majority of maser-emitting supernova remnants(SNRs) have accompanying regions of extended maser emission. Enhanced OH abundance created by the passing shock is observed both as maser emission and absorption against the strong background of the remnant. Modeling the observed OH profiles gives an estimate of the physical conditions in which weak, extended maser emission arises. I will discuss how we can realize the utility of this extended maser emission, particularly the potential to measure the strength of the post-shock magnetic field via Zeeman splitting over these large-scales.

AB - Compact OH(1720 MHz) masers have proven to be excellent signposts for the interaction of supernova remnants with adjacent molecular clouds. Less appreciated has been the weak, extended OH(1720 MHz) emission which accompanies strong compact maser sources. Recent single-dish and interferometric observations reveal the majority of maser-emitting supernova remnants(SNRs) have accompanying regions of extended maser emission. Enhanced OH abundance created by the passing shock is observed both as maser emission and absorption against the strong background of the remnant. Modeling the observed OH profiles gives an estimate of the physical conditions in which weak, extended maser emission arises. I will discuss how we can realize the utility of this extended maser emission, particularly the potential to measure the strength of the post-shock magnetic field via Zeeman splitting over these large-scales.

KW - ISM: magnetic fields

KW - Masers

KW - Supernova remnants

UR - http://www.scopus.com/inward/record.url?scp=38849186672&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38849186672&partnerID=8YFLogxK

U2 - 10.1017/S1743921307013178

DO - 10.1017/S1743921307013178

M3 - Article

AN - SCOPUS:38849186672

SN - 1743-9213

VL - 3

SP - 307

EP - 311

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

IS - S242

ER -

Extended OH(1720 MHz) maser emission from supernova remnants

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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