Effects of Jet-like Explosion in SN 1987A
We study the effects of jet-like explosion in SN 1987A. Calculations of the explosive nucleosynthesis and the matter mixing in a jet-like explosion are performed and their results are compared with the observations of SN 1987A. It is shown that the jet-like explosion model is favored because the rad...
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ftdatacite:10.48550/arxiv.astro-ph/9907109 2023-05-15T18:23:17+02:00 Effects of Jet-like Explosion in SN 1987A Nagataki, S. 1999 https://dx.doi.org/10.48550/arxiv.astro-ph/9907109 https://arxiv.org/abs/astro-ph/9907109 unknown arXiv https://dx.doi.org/10.1086/313317 Assumed arXiv.org perpetual, non-exclusive license to distribute this article for submissions made before January 2004 http://arxiv.org/licenses/assumed-1991-2003/ Astrophysics astro-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 1999 ftdatacite https://doi.org/10.48550/arxiv.astro-ph/9907109 https://doi.org/10.1086/313317 2022-04-01T17:19:21Z We study the effects of jet-like explosion in SN 1987A. Calculations of the explosive nucleosynthesis and the matter mixing in a jet-like explosion are performed and their results are compared with the observations of SN 1987A. It is shown that the jet-like explosion model is favored because the radioactive nuclei 44Ti is produced in a sufficient amount to explain the observed bolometric luminosity at 3600 days after the explosion. It is also shown that the observed line profiles of Fe[II] are well reproduced by the jet-like explosion model. In particular, the fast moving component travelling at (3000-4000) km/s is well reproduced, which has not been reproduced by the spherical explosion models. Moreover, we conclude that the favored degree of a jet-like explosion to explain the tail of the light curve is consistent with the one favored in the calculation of the matter mixing. The concluded ratio of the velocity along to the polar axis relative to that in the equatorial plane at the Si/Fe interface is about 2:1. This conclusion will give good constraints on the calculations of the dynamics of the collapse-driven supernova. The asymmetry of the observed line profiles of Fe[II] can be explained when the assumption of the equatorial symmetry of the system is removed, which can be caused by the asymmetry of the jet-like explosion with respect to the equatorial plane. In the case of SN 1987A, the jet on the north pole has to be stronger than that on the south pole in order to reproduce the observed asymmetric line profiles. Such an asymmetry may also be the origin of the pulsar kick. When we believe some theories that cause such an asymmetric explosion, the proto -neutron star born in SN 1987A is moving in the southern part of the remnant. : 62 pages and 25 postscript figures Text South pole DataCite Metadata Store (German National Library of Science and Technology) North Pole South Pole |
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Astrophysics astro-ph FOS Physical sciences |
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Astrophysics astro-ph FOS Physical sciences Nagataki, S. Effects of Jet-like Explosion in SN 1987A |
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Astrophysics astro-ph FOS Physical sciences |
description |
We study the effects of jet-like explosion in SN 1987A. Calculations of the explosive nucleosynthesis and the matter mixing in a jet-like explosion are performed and their results are compared with the observations of SN 1987A. It is shown that the jet-like explosion model is favored because the radioactive nuclei 44Ti is produced in a sufficient amount to explain the observed bolometric luminosity at 3600 days after the explosion. It is also shown that the observed line profiles of Fe[II] are well reproduced by the jet-like explosion model. In particular, the fast moving component travelling at (3000-4000) km/s is well reproduced, which has not been reproduced by the spherical explosion models. Moreover, we conclude that the favored degree of a jet-like explosion to explain the tail of the light curve is consistent with the one favored in the calculation of the matter mixing. The concluded ratio of the velocity along to the polar axis relative to that in the equatorial plane at the Si/Fe interface is about 2:1. This conclusion will give good constraints on the calculations of the dynamics of the collapse-driven supernova. The asymmetry of the observed line profiles of Fe[II] can be explained when the assumption of the equatorial symmetry of the system is removed, which can be caused by the asymmetry of the jet-like explosion with respect to the equatorial plane. In the case of SN 1987A, the jet on the north pole has to be stronger than that on the south pole in order to reproduce the observed asymmetric line profiles. Such an asymmetry may also be the origin of the pulsar kick. When we believe some theories that cause such an asymmetric explosion, the proto -neutron star born in SN 1987A is moving in the southern part of the remnant. : 62 pages and 25 postscript figures |
format |
Text |
author |
Nagataki, S. |
author_facet |
Nagataki, S. |
author_sort |
Nagataki, S. |
title |
Effects of Jet-like Explosion in SN 1987A |
title_short |
Effects of Jet-like Explosion in SN 1987A |
title_full |
Effects of Jet-like Explosion in SN 1987A |
title_fullStr |
Effects of Jet-like Explosion in SN 1987A |
title_full_unstemmed |
Effects of Jet-like Explosion in SN 1987A |
title_sort |
effects of jet-like explosion in sn 1987a |
publisher |
arXiv |
publishDate |
1999 |
url |
https://dx.doi.org/10.48550/arxiv.astro-ph/9907109 https://arxiv.org/abs/astro-ph/9907109 |
geographic |
North Pole South Pole |
geographic_facet |
North Pole South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://dx.doi.org/10.1086/313317 |
op_rights |
Assumed arXiv.org perpetual, non-exclusive license to distribute this article for submissions made before January 2004 http://arxiv.org/licenses/assumed-1991-2003/ |
op_doi |
https://doi.org/10.48550/arxiv.astro-ph/9907109 https://doi.org/10.1086/313317 |
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1766202846519230464 |