Show simple item record

dc.contributor.authorNg, C
dc.contributor.authorPotter, T
dc.contributor.authorStaveley-Smith, L
dc.contributor.authorTingay, Steven
dc.contributor.authorGaensler, B
dc.contributor.authorPhillips, C
dc.contributor.authorTzioumis, A
dc.contributor.authorZanardo, G
dc.date.accessioned2017-01-30T14:40:18Z
dc.date.available2017-01-30T14:40:18Z
dc.date.created2013-03-12T20:00:35Z
dc.date.issued2012
dc.identifier.citationNg, C and Potter, T and Staveley-Smith, L and Tingay, S and Gaensler, B and Phillips, C and Tzioumis, A and Zanardo, G. 2012. First VLBI Detection of the Radio Remnant of Supernova 1987A: Evidence for Small-Scale Features. The Astrophysical Journal Letters 728 (1): L15.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/40177
dc.identifier.doi10.1088/2041-8205/728/1/L15
dc.description.abstract

We present a detailed analysis of the first very long baseline interferometry (VLBI) detection of the radio remnant of supernova 1987A. The VLBI data taken in 2007 and 2008 at 1.4 and 1.7 GHz, respectively, provide images sensitive to angular scales from 0farcs1 to 0farcs7, the highest resolution to date at radio frequencies. The results reveal two extended lobes with an overall morphology consistent with observations at lower resolutions. We find evidence of small-scale features in the radio shell, which possibly consist of compact clumps near the inner surface of the shell. These features have angular extent smaller than 0farcs2 and contribute less than 13% of the total remnant flux density. No central source is detected in the VLBI images. We place a 3s flux density limit of 0.3 mJy on any pulsar or pulsar wind nebula at 1.7 GHz.

dc.publisherInstitute of Physics Publishing Ltd.
dc.subjecthigh angular resolution
dc.subjectsupernovae
dc.subjectsupernova remnants
dc.subjectinstrumentation
dc.subjectindividual (SN 1987A)
dc.subjectISM
dc.titleFirst VLBI Detection of the Radio Remnant of Supernova 1987A: Evidence for Small-Scale Features
dc.typeJournal Article
dcterms.source.volume728
dcterms.source.number1
dcterms.source.issn2041-8205
dcterms.source.titleThe Astrophysical Journal Letters
curtin.department
curtin.accessStatusOpen access via publisher


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record