{"title":"Critical period of a star in the scenario of accretion-driven spin-up","authors":"N. Ikhsanov, N. Beskrovnaya","doi":"10.31725/0367-7966-2024-232-44-48","DOIUrl":null,"url":null,"abstract":"We consider the accretion-driven spin-up of a magnetized degenerate star in a close binary system under different assumptions about the accretion scenario. We have estimated the minimum possible spin period which the star can achieve in the course of such spin-up. We show that the star can achieve the minimum possible value of the spin period if the interchange instabilities of its magnetospheric boundary are suppressed.","PeriodicalId":500837,"journal":{"name":"Publications of the Pulkovo Observatory","volume":"85 ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Publications of the Pulkovo Observatory","FirstCategoryId":"0","ListUrlMain":"https://doi.org/10.31725/0367-7966-2024-232-44-48","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
We consider the accretion-driven spin-up of a magnetized degenerate star in a close binary system under different assumptions about the accretion scenario. We have estimated the minimum possible spin period which the star can achieve in the course of such spin-up. We show that the star can achieve the minimum possible value of the spin period if the interchange instabilities of its magnetospheric boundary are suppressed.
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