G359.87+0.18: A young supernova remnant candidate near the Galactic center?

F. Yusef-Zadeh; W. D. Cotton; S. P. Reynolds

doi:10.1086/311294

G359.87+0.18: A young supernova remnant candidate near the Galactic center?

F. Yusef-Zadeh^*, W. D. Cotton, S. P. Reynolds

^*Corresponding author for this work

Physics and Astronomy

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

1 Scopus citations

Abstract

Subarcsecond radio continuum observations of the Galactic center region at λ = 6 and 2 cm reveal a 0″.5 diameter source with a shell-like morphology. This source is linearly polarized at a level of 16% at 6 cm and has a steep nonthermal spectrum with a spectral index of 1.6 between 6 and 2 cm. The distance to this source is not known, but the large rotation measure value of 3000 rad m^-2 suggests that G359.87+0.18 is likely to be located in the inner Galaxy or at an extragalactic distance. We discuss possible interpretations of this object as a recent supernova, a very young supernova remnant, a nova remnant, or an extragalactic source. All possibilities are highly problematic.

Original language	English (US)
Pages (from-to)	L55-L58
Journal	Astrophysical Journal
Volume	498
Issue number	1 PART II
DOIs	https://doi.org/10.1086/311294
State	Published - 1998

Keywords

Galaxies: ISM
Galaxy: center
ISM: magnetic fields
Supernova remnants

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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@article{7f4e1d2b7ef64a64a228302a39744cda,

title = "G359.87+0.18: A young supernova remnant candidate near the Galactic center?",

abstract = "Subarcsecond radio continuum observations of the Galactic center region at λ = 6 and 2 cm reveal a 0″.5 diameter source with a shell-like morphology. This source is linearly polarized at a level of 16% at 6 cm and has a steep nonthermal spectrum with a spectral index of 1.6 between 6 and 2 cm. The distance to this source is not known, but the large rotation measure value of 3000 rad m-2 suggests that G359.87+0.18 is likely to be located in the inner Galaxy or at an extragalactic distance. We discuss possible interpretations of this object as a recent supernova, a very young supernova remnant, a nova remnant, or an extragalactic source. All possibilities are highly problematic.",

keywords = "Galaxies: ISM, Galaxy: center, ISM: magnetic fields, Supernova remnants",

author = "F. Yusef-Zadeh and Cotton, {W. D.} and Reynolds, {S. P.}",

note = "Funding Information: 1 The National Radio Astronomy Observatory is a facility of the National Science Foundation, operated under a cooperative agreement by Associated Universities, Inc. Funding Information: F. Yusef-Zadeh{\textquoteright}s work was supported in part by NASA grant NAGW-2518. S. Reynolds acknowledges support from NASA grant NAG 5-2844. We thank Dale Frail for useful discussions.",

year = "1998",

doi = "10.1086/311294",

language = "English (US)",

volume = "498",

pages = "L55--L58",

journal = "Astrophysical Journal",

issn = "0004-637X",

number = "1 PART II",

}

TY - JOUR

T1 - G359.87+0.18

T2 - A young supernova remnant candidate near the Galactic center?

AU - Yusef-Zadeh, F.

AU - Cotton, W. D.

AU - Reynolds, S. P.

N1 - Funding Information: 1 The National Radio Astronomy Observatory is a facility of the National Science Foundation, operated under a cooperative agreement by Associated Universities, Inc. Funding Information: F. Yusef-Zadeh’s work was supported in part by NASA grant NAGW-2518. S. Reynolds acknowledges support from NASA grant NAG 5-2844. We thank Dale Frail for useful discussions.

PY - 1998

Y1 - 1998

N2 - Subarcsecond radio continuum observations of the Galactic center region at λ = 6 and 2 cm reveal a 0″.5 diameter source with a shell-like morphology. This source is linearly polarized at a level of 16% at 6 cm and has a steep nonthermal spectrum with a spectral index of 1.6 between 6 and 2 cm. The distance to this source is not known, but the large rotation measure value of 3000 rad m-2 suggests that G359.87+0.18 is likely to be located in the inner Galaxy or at an extragalactic distance. We discuss possible interpretations of this object as a recent supernova, a very young supernova remnant, a nova remnant, or an extragalactic source. All possibilities are highly problematic.

AB - Subarcsecond radio continuum observations of the Galactic center region at λ = 6 and 2 cm reveal a 0″.5 diameter source with a shell-like morphology. This source is linearly polarized at a level of 16% at 6 cm and has a steep nonthermal spectrum with a spectral index of 1.6 between 6 and 2 cm. The distance to this source is not known, but the large rotation measure value of 3000 rad m-2 suggests that G359.87+0.18 is likely to be located in the inner Galaxy or at an extragalactic distance. We discuss possible interpretations of this object as a recent supernova, a very young supernova remnant, a nova remnant, or an extragalactic source. All possibilities are highly problematic.

KW - Galaxies: ISM

KW - Galaxy: center

KW - ISM: magnetic fields

KW - Supernova remnants

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U2 - 10.1086/311294

DO - 10.1086/311294

M3 - Article

AN - SCOPUS:23544442305

VL - 498

SP - L55-L58

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1 PART II

ER -

G359.87+0.18: A young supernova remnant candidate near the Galactic center?

Abstract

Keywords

ASJC Scopus subject areas

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