SN 1987A at the end of its second decade

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dc.creatorKjaer, Karina
dc.creatorGroeningsson, Per
dc.creatorKotak, Rubina
dc.creatorFransson, Claes
dc.creatorLeibundgut, Bruno
dc.date2006-12-07
dc.date.accessioned2026-07-07T10:36:41Z
dc.date.available2026-07-07T10:36:41Z
dc.descriptionAfter nearly two decades at least five emission mechanisms can be found in SN 1987A. The ejecta continue to glow as a result of the radioactive decay of long-lived nuclei (mostly 44Ti), but is fading continuously because of the expansion and the reduced opacity. The nearly stationary rings around SN 1987A are still fluorescing from the recombination of matter originally excited by the soft X-ray emission from the shock breakout at explosion. The supernova shock reached the inner circumstellar ring about ten years ago and the forward shock is moving through the inner ring and leaves shocked material behind. This material is excited and accelerated. The reverse shock illuminates the fast-moving supernova ejecta as it catches up. And, finally light echoes in nearby interstellar matter can still be observed. We present here high resolution spectroscopy in the optical and integral-field spectroscopy in the near infrared of SN 1987A and its rings.
dc.description8 pages, 6 figures, to be published in The Multicoloured Landscape of Compact Objects and their Explosive Origins, Proceedings of the Cefalu conference
dc.identifierhttps://arxiv.org/abs/astro-ph/0612177
dc.identifierhttp://arxiv.org/abs/astro-ph/0612177
dc.identifierAIPConf.Proc.924:366-372,2007
dc.identifierdoi:10.1063/1.2774882
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180136
dc.subjectAstrophysics
dc.titleSN 1987A at the end of its second decade
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