{"title":"Supernova in Lost Common Envelope and SN 2006gy","authors":"N. N. Chugai","doi":"10.1134/S1063773725700227","DOIUrl":null,"url":null,"abstract":"<p>A mechanism is proposed for synchronizing core-collapse supernova with a recent loss of a red supergiant (RSG) envelope in the common envelope regime. A prerequisite for the synchronization is a moderate RSG expansion during final decade. This scenario is based on the phenomenon of preSN II dense shell formed at the final stage of 10–20 yr as a result of powerfull mass loss. The energy deposition into the RSG envelope that powers the enormous mass loss rate is able to expand the RSG. The moderate expansion is sufficient for the close secondary component to plunge into the common envelope with a subsequent explosion of stripped helium core. Superluminous SN 2006gy is suggested to be the outcome of this scenario.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":"51 2","pages":"73 - 78"},"PeriodicalIF":0.8000,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063773725700227","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
A mechanism is proposed for synchronizing core-collapse supernova with a recent loss of a red supergiant (RSG) envelope in the common envelope regime. A prerequisite for the synchronization is a moderate RSG expansion during final decade. This scenario is based on the phenomenon of preSN II dense shell formed at the final stage of 10–20 yr as a result of powerfull mass loss. The energy deposition into the RSG envelope that powers the enormous mass loss rate is able to expand the RSG. The moderate expansion is sufficient for the close secondary component to plunge into the common envelope with a subsequent explosion of stripped helium core. Superluminous SN 2006gy is suggested to be the outcome of this scenario.
期刊介绍：
Astronomy Letters is an international peer reviewed journal that publishes the results of original research on all aspects of modern astronomy and astrophysics including high energy astrophysics, cosmology, space astronomy, theoretical astrophysics, radio astronomy, extragalactic astronomy, stellar astronomy, and investigation of the Solar system.
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