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Article: The remnant of supernova 1987A resolved at 3-mm wavelength
Title | The remnant of supernova 1987A resolved at 3-mm wavelength |
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Authors | |
Keywords | Ism: Supernova Remnants Magellanic Clouds Radio Continuum: Ism Supernovae: Individual: Sn 1987A |
Issue Date | 2012 |
Publisher | EDP Sciences. The Journal's web site is located at http://www.aanda.org |
Citation | Astronomy And Astrophysics, 2012, v. 541, article no. L2 How to Cite? |
Abstract | Context. The proximity of core-collapse supernova 1987A (SN 1987A) in the Large Magellanic Cloud (LMC) and its rapid evolution make it a unique case study of the development of a young supernova remnant. Aims. We aim at resolving the remnant of SN 1987A for the first time in the 3-mm band (at 94 GHz). Methods. We observed the source at 3-mm wavelength with a 750-m configuration of the Australia Telescope Compact Array (ATCA). We compared the image with a recent 3-cm image and with archival X-ray images. Results. We present a diffraction-limited image with a resolution of 0.′′7, revealing the ring structure seen at lower frequencies and at other wavebands. The emission peaks in the eastern part of the ring. The 3-mm image bears resemblance to early X-ray images (from 1999-2000). We place an upper limit of 1 mJy (2σ) on any discrete source of emission in the centre (inside of the ring). The integrated flux density at 3 mm has doubled over the six years since the previous observations at 3 mm. Conclusions. At 3 mm-i.e. within the operational domain of the Atacama Large Millimeter/submillimeter Array (ALMA)-SN 1987A appears to be dominated by synchrotron radiation from the inner rim of the equatorial ring, characterised by moderately weak shocks. There is no clear sign of emission of a different nature, but the current limits do not rule out such component altogether. © 2012 ESO. |
Persistent Identifier | http://hdl.handle.net/10722/180504 |
ISSN | 2023 Impact Factor: 5.4 2023 SCImago Journal Rankings: 1.896 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lakićević, M | en_US |
dc.contributor.author | Zanardo, G | en_US |
dc.contributor.author | Van Loon, JTh | en_US |
dc.contributor.author | StaveleySmith, L | en_US |
dc.contributor.author | Potter, T | en_US |
dc.contributor.author | Ng, CY | en_US |
dc.contributor.author | Gaensler, BM | en_US |
dc.date.accessioned | 2013-01-28T01:38:55Z | - |
dc.date.available | 2013-01-28T01:38:55Z | - |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | Astronomy And Astrophysics, 2012, v. 541, article no. L2 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/180504 | - |
dc.description.abstract | Context. The proximity of core-collapse supernova 1987A (SN 1987A) in the Large Magellanic Cloud (LMC) and its rapid evolution make it a unique case study of the development of a young supernova remnant. Aims. We aim at resolving the remnant of SN 1987A for the first time in the 3-mm band (at 94 GHz). Methods. We observed the source at 3-mm wavelength with a 750-m configuration of the Australia Telescope Compact Array (ATCA). We compared the image with a recent 3-cm image and with archival X-ray images. Results. We present a diffraction-limited image with a resolution of 0.′′7, revealing the ring structure seen at lower frequencies and at other wavebands. The emission peaks in the eastern part of the ring. The 3-mm image bears resemblance to early X-ray images (from 1999-2000). We place an upper limit of 1 mJy (2σ) on any discrete source of emission in the centre (inside of the ring). The integrated flux density at 3 mm has doubled over the six years since the previous observations at 3 mm. Conclusions. At 3 mm-i.e. within the operational domain of the Atacama Large Millimeter/submillimeter Array (ALMA)-SN 1987A appears to be dominated by synchrotron radiation from the inner rim of the equatorial ring, characterised by moderately weak shocks. There is no clear sign of emission of a different nature, but the current limits do not rule out such component altogether. © 2012 ESO. | en_US |
dc.language | eng | en_US |
dc.publisher | EDP Sciences. The Journal's web site is located at http://www.aanda.org | en_US |
dc.relation.ispartof | Astronomy and Astrophysics | en_US |
dc.subject | Ism: Supernova Remnants | en_US |
dc.subject | Magellanic Clouds | en_US |
dc.subject | Radio Continuum: Ism | en_US |
dc.subject | Supernovae: Individual: Sn 1987A | en_US |
dc.title | The remnant of supernova 1987A resolved at 3-mm wavelength | en_US |
dc.type | Article | en_US |
dc.identifier.email | Ng, CY: stephen_ng@hku.hk | en_US |
dc.identifier.authority | Ng, CY=rp01706 | en_US |
dc.description.nature | link_to_OA_fulltext | en_US |
dc.identifier.doi | 10.1051/0004-6361/201218902 | en_US |
dc.identifier.scopus | eid_2-s2.0-84860117687 | en_US |
dc.identifier.hkuros | 217335 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-84860117687&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 541 | en_US |
dc.identifier.spage | article no. L2 | - |
dc.identifier.epage | article no. L2 | - |
dc.identifier.isi | WOS:000304390900170 | - |
dc.publisher.place | France | en_US |
dc.identifier.scopusauthorid | Lakićević, M=42261915500 | en_US |
dc.identifier.scopusauthorid | Zanardo, G=6602108757 | en_US |
dc.identifier.scopusauthorid | Van Loon, JTh=7103050723 | en_US |
dc.identifier.scopusauthorid | StaveleySmith, L=7004532371 | en_US |
dc.identifier.scopusauthorid | Potter, T=35503804700 | en_US |
dc.identifier.scopusauthorid | Ng, CY=24830903500 | en_US |
dc.identifier.scopusauthorid | Gaensler, BM=34769921200 | en_US |
dc.identifier.issnl | 0004-6361 | - |