Radio properties of the supernova remnant N157B

J. S. Lazendic; J. R. Dickel; R. F. Haynes; P. A. Jones; G. L. White

doi:10.1086/309377

Radio properties of the supernova remnant N157B

J. S. Lazendic, J. R. Dickel, R. F. Haynes, P. A. Jones, G. L. White

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

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Abstract

A new investigation of the supernova remnant (SNR) N157B was carried out with the Australia Telescope Compact Array. Radio continuum images of the entire 30 Doradus region have been made at 3.5 and 6 cm wavelengths with a resolution of ∼2″. These data allow a high-resolution study of the spectral index distribution and polarization properties of both N157B and the nearby 30 Doradus nebula (the latter will be reported in a subsequent paper). N157B is an extended Crab-type SNR which may be beginning the transition to a composite remnant. There is little apparent fine structure, and the brightest radio region is several parsecs from the probable position of the X-ray pulsar. The SNR has a radio spectral index of -0.19 and is significantly polarized at 3.5 cm but not at longer wavelengths.

Original language	English
Pages (from-to)	808-813
Number of pages	6
Journal	Astrophysical Journal
Volume	540
Issue number	2 PART 1
DOIs	https://doi.org/10.1086/309377
Publication status	Published - 10 Sept 2000
Externally published	Yes

Keywords

ISM: individual (N157B)
Magellanic Clouds
Radio continuum: ISM
Supernova remnants

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10.1086/309377

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title = "Radio properties of the supernova remnant N157B",

abstract = "A new investigation of the supernova remnant (SNR) N157B was carried out with the Australia Telescope Compact Array. Radio continuum images of the entire 30 Doradus region have been made at 3.5 and 6 cm wavelengths with a resolution of ∼2″. These data allow a high-resolution study of the spectral index distribution and polarization properties of both N157B and the nearby 30 Doradus nebula (the latter will be reported in a subsequent paper). N157B is an extended Crab-type SNR which may be beginning the transition to a composite remnant. There is little apparent fine structure, and the brightest radio region is several parsecs from the probable position of the X-ray pulsar. The SNR has a radio spectral index of -0.19 and is significantly polarized at 3.5 cm but not at longer wavelengths.",

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doi = "10.1086/309377",

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T1 - Radio properties of the supernova remnant N157B

AU - Lazendic, J. S.

AU - Dickel, J. R.

AU - Haynes, R. F.

AU - Jones, P. A.

AU - White, G. L.

PY - 2000/9/10

Y1 - 2000/9/10

N2 - A new investigation of the supernova remnant (SNR) N157B was carried out with the Australia Telescope Compact Array. Radio continuum images of the entire 30 Doradus region have been made at 3.5 and 6 cm wavelengths with a resolution of ∼2″. These data allow a high-resolution study of the spectral index distribution and polarization properties of both N157B and the nearby 30 Doradus nebula (the latter will be reported in a subsequent paper). N157B is an extended Crab-type SNR which may be beginning the transition to a composite remnant. There is little apparent fine structure, and the brightest radio region is several parsecs from the probable position of the X-ray pulsar. The SNR has a radio spectral index of -0.19 and is significantly polarized at 3.5 cm but not at longer wavelengths.

AB - A new investigation of the supernova remnant (SNR) N157B was carried out with the Australia Telescope Compact Array. Radio continuum images of the entire 30 Doradus region have been made at 3.5 and 6 cm wavelengths with a resolution of ∼2″. These data allow a high-resolution study of the spectral index distribution and polarization properties of both N157B and the nearby 30 Doradus nebula (the latter will be reported in a subsequent paper). N157B is an extended Crab-type SNR which may be beginning the transition to a composite remnant. There is little apparent fine structure, and the brightest radio region is several parsecs from the probable position of the X-ray pulsar. The SNR has a radio spectral index of -0.19 and is significantly polarized at 3.5 cm but not at longer wavelengths.

KW - ISM: individual (N157B)

KW - Magellanic Clouds

KW - Radio continuum: ISM

KW - Supernova remnants

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JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART 1

ER -

Radio properties of the supernova remnant N157B

Abstract

Keywords

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