Radio Properties of the Supernova Remnant N157B

Jasmina Lazendic, John R Dickel, Raymond Haynes, Paul Jones, Graeme White

Research output: Contribution to journalArticleResearchpeer-review

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 languageEnglish
Pages (from-to)808-813
Number of pages6
JournalThe Astrophysical Journal
Volume540
Issue number2
DOIs
Publication statusPublished - Sep 2000
Externally publishedYes

Keywords

  • Supernova Remnants
  • ISM: general
  • Magellanic Clouds

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