Discovery of 35 new supernova remnants in the inner galaxy

C. L. Brogan; J. D. Gelfand; B. M. Gaensler; N. E. Kassim; T. J.W. Lazio

doi:10.1086/501500

Discovery of 35 new supernova remnants in the inner galaxy

C. L. Brogan, J. D. Gelfand, B. M. Gaensler, N. E. Kassim, T. J.W. Lazio

Physics

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

Abstract

We report the discovery of up to 35 new supernova remnants (SNRs) from a 42″ resolution, 90 cm multiconfiguration Very Large Array survey of the Galactic plane covering 4°.5 < l < 22°.0 and |b| < 1°.25. Archival 20 cm, 11 cm, and 8 μm data have also been used to identify the SNRs and constrain their properties. The 90 cm image is sensitive to SNRs with diameters 2'.5 to 50' and down to a surface brightness limit of ∼10 ^-21 W m^-2 Hz^-1 sr^-1. This survey has nearly tripled the number of SNRs known in this part of the Galaxy and represents an overall 15% increase in the total number of Galactic SNRs. These results suggest that further deep, low-frequency surveys of the inner Galaxy will resolve the discrepancy between the expected number of Galactic SNRs and the significantly smaller number of currently known SNRs.

Original language	English (US)
Pages (from-to)	L25-L29
Journal	Astrophysical Journal
Volume	639
Issue number	1 II
DOIs	https://doi.org/10.1086/501500
State	Published - Mar 1 2006

Keywords

Radio continuum: ISM
Supernova remnants
Surveys

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1086/501500

Cite this

@article{3681fc4e17bc441f8802309808f39b0a,

title = "Discovery of 35 new supernova remnants in the inner galaxy",

abstract = "We report the discovery of up to 35 new supernova remnants (SNRs) from a 42″ resolution, 90 cm multiconfiguration Very Large Array survey of the Galactic plane covering 4°.5 < l < 22°.0 and |b| < 1°.25. Archival 20 cm, 11 cm, and 8 μm data have also been used to identify the SNRs and constrain their properties. The 90 cm image is sensitive to SNRs with diameters 2'.5 to 50' and down to a surface brightness limit of ∼10 -21 W m-2 Hz-1 sr-1. This survey has nearly tripled the number of SNRs known in this part of the Galaxy and represents an overall 15% increase in the total number of Galactic SNRs. These results suggest that further deep, low-frequency surveys of the inner Galaxy will resolve the discrepancy between the expected number of Galactic SNRs and the significantly smaller number of currently known SNRs.",

keywords = "Radio continuum: ISM, Supernova remnants, Surveys",

author = "Brogan, {C. L.} and Gelfand, {J. D.} and Gaensler, {B. M.} and Kassim, {N. E.} and Lazio, {T. J.W.}",

note = "Funding Information: We would like to thank the SGPS team for their hard work in acquiring the ATCA 20 cm data. The National Radio Astronomy Observatory operates the Very Large Array and is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. This research made use of data products from the Midcourse Space Experiment. Basic research in radio astronomy at the Naval Research Laboratory is supported by the Office of Naval Research.",

year = "2006",

month = mar,

day = "1",

doi = "10.1086/501500",

language = "English (US)",

volume = "639",

pages = "L25--L29",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "1 II",

}

TY - JOUR

T1 - Discovery of 35 new supernova remnants in the inner galaxy

AU - Brogan, C. L.

AU - Gelfand, J. D.

AU - Gaensler, B. M.

AU - Kassim, N. E.

AU - Lazio, T. J.W.

N1 - Funding Information: We would like to thank the SGPS team for their hard work in acquiring the ATCA 20 cm data. The National Radio Astronomy Observatory operates the Very Large Array and is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. This research made use of data products from the Midcourse Space Experiment. Basic research in radio astronomy at the Naval Research Laboratory is supported by the Office of Naval Research.

PY - 2006/3/1

Y1 - 2006/3/1

N2 - We report the discovery of up to 35 new supernova remnants (SNRs) from a 42″ resolution, 90 cm multiconfiguration Very Large Array survey of the Galactic plane covering 4°.5 < l < 22°.0 and |b| < 1°.25. Archival 20 cm, 11 cm, and 8 μm data have also been used to identify the SNRs and constrain their properties. The 90 cm image is sensitive to SNRs with diameters 2'.5 to 50' and down to a surface brightness limit of ∼10 -21 W m-2 Hz-1 sr-1. This survey has nearly tripled the number of SNRs known in this part of the Galaxy and represents an overall 15% increase in the total number of Galactic SNRs. These results suggest that further deep, low-frequency surveys of the inner Galaxy will resolve the discrepancy between the expected number of Galactic SNRs and the significantly smaller number of currently known SNRs.

AB - We report the discovery of up to 35 new supernova remnants (SNRs) from a 42″ resolution, 90 cm multiconfiguration Very Large Array survey of the Galactic plane covering 4°.5 < l < 22°.0 and |b| < 1°.25. Archival 20 cm, 11 cm, and 8 μm data have also been used to identify the SNRs and constrain their properties. The 90 cm image is sensitive to SNRs with diameters 2'.5 to 50' and down to a surface brightness limit of ∼10 -21 W m-2 Hz-1 sr-1. This survey has nearly tripled the number of SNRs known in this part of the Galaxy and represents an overall 15% increase in the total number of Galactic SNRs. These results suggest that further deep, low-frequency surveys of the inner Galaxy will resolve the discrepancy between the expected number of Galactic SNRs and the significantly smaller number of currently known SNRs.

KW - Radio continuum: ISM

KW - Supernova remnants

KW - Surveys

UR - http://www.scopus.com/inward/record.url?scp=33644994107&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33644994107&partnerID=8YFLogxK

U2 - 10.1086/501500

DO - 10.1086/501500

M3 - Article

AN - SCOPUS:33644994107

SN - 0004-637X

VL - 639

SP - L25-L29

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 II

ER -

Discovery of 35 new supernova remnants in the inner galaxy

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this