{"title":"磁制动定律对持久和瞬变低质量 X 射线双星演化的影响","authors":"Hao-Ran Yang, Xiang-Dong Li","doi":"arxiv-2409.05067","DOIUrl":null,"url":null,"abstract":"Swift J1858.6$-$0814 (hereafter J1858) is a transient neutron star low-mass\nX-ray binary (NS LMXB). There is controversy regarding its donor mass derived\nfrom observations and theoretical calculations. In this paper, we adopt seven\nmagnetic braking (MB) prescriptions suggested in the literature and different\nmetallicity $Z$ to simulate the evolution of the LMXB. Our results show that,\nemploying the MB model proposed by \\citet{2012ApJ...746...43R} (\"rm12\"), the\nConvection And Rotation Boosted (\"carb\") model \\citep{2019ApJ...886L..31V}, as\nwell as the Intermediate (\"inter\") and Convection-boosted (\"cboost\") models in\n\\citet{2019MNRAS.483.5595V} can match (part of) the observational parameters of\nJ1858 well. We then apply our method to other observed LMXBs and find that the\n\"rm12\" and \"inter\" MB laws are most promising in explaining transient LMXBs. In\ncomparison, the simulations with the \"cboost\" and \"carb\" MB laws are more\ninclined to reproduce persistent LMXBs and ultra-compact X-ray binaries\n(UCXBs), respectively. Our results, though subject to computational and/or\nobservational bias, show that it is challenging to find a unified MB law that\napplies to the NS LMXB sub-populations simultaneously, indicating our lack of\nunderstanding of the true MB law. In addition, we explore the influence of\nvarious MB laws on the magnitude of the bifurcation periods in LMXBs.","PeriodicalId":501343,"journal":{"name":"arXiv - PHYS - High Energy Astrophysical Phenomena","volume":"17 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The influence of the magnetic braking laws on the evolution of persistent and transient low-mass X-ray binaries\",\"authors\":\"Hao-Ran Yang, Xiang-Dong Li\",\"doi\":\"arxiv-2409.05067\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Swift J1858.6$-$0814 (hereafter J1858) is a transient neutron star low-mass\\nX-ray binary (NS LMXB). There is controversy regarding its donor mass derived\\nfrom observations and theoretical calculations. In this paper, we adopt seven\\nmagnetic braking (MB) prescriptions suggested in the literature and different\\nmetallicity $Z$ to simulate the evolution of the LMXB. Our results show that,\\nemploying the MB model proposed by \\\\citet{2012ApJ...746...43R} (\\\"rm12\\\"), the\\nConvection And Rotation Boosted (\\\"carb\\\") model \\\\citep{2019ApJ...886L..31V}, as\\nwell as the Intermediate (\\\"inter\\\") and Convection-boosted (\\\"cboost\\\") models in\\n\\\\citet{2019MNRAS.483.5595V} can match (part of) the observational parameters of\\nJ1858 well. We then apply our method to other observed LMXBs and find that the\\n\\\"rm12\\\" and \\\"inter\\\" MB laws are most promising in explaining transient LMXBs. In\\ncomparison, the simulations with the \\\"cboost\\\" and \\\"carb\\\" MB laws are more\\ninclined to reproduce persistent LMXBs and ultra-compact X-ray binaries\\n(UCXBs), respectively. Our results, though subject to computational and/or\\nobservational bias, show that it is challenging to find a unified MB law that\\napplies to the NS LMXB sub-populations simultaneously, indicating our lack of\\nunderstanding of the true MB law. In addition, we explore the influence of\\nvarious MB laws on the magnitude of the bifurcation periods in LMXBs.\",\"PeriodicalId\":501343,\"journal\":{\"name\":\"arXiv - PHYS - High Energy Astrophysical Phenomena\",\"volume\":\"17 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - High Energy Astrophysical Phenomena\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.05067\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - High Energy Astrophysical Phenomena","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.05067","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
Swift J1858.6$-$0814(以下简称 J1858)是一颗瞬态中子星低质量 X 射线双星(NS LMXB)。根据观测和理论计算得出的其供体质量存在争议。在本文中,我们采用了文献中提出的七种磁制动(MB)处方和不同的金属性$Z$来模拟LMXB的演化。我们的结果表明,采用\citet{2012ApJ...746...43R}提出的MB模型("rm12"),LMXB的演化过程与 "rm12 "模型相似。(rm12)、Convection And Rotation Boosted("carb")模型(citep{2019ApJ...886L...31V})以及Intermediate("inter")和Convection-boosted("cboost")模型(citet{2019MNRAS.483.5595V})都能很好地匹配J1858的(部分)观测参数。然后,我们将我们的方法应用于其他观测到的LMXB,发现 "rm12 "和 "inter "MB定律最有希望解释瞬态LMXB。相比之下,"cboost "和 "carb "MB定律的模拟分别更倾向于重现持久的LMXB和超紧凑X射线双星(UCXB)。我们的结果虽然受到计算和/或观测偏差的影响,但也表明要找到一个同时适用于 NS LMXB 子群的统一 MB 规律是很有挑战性的,这说明我们对真正的 MB 规律还缺乏了解。此外,我们还探讨了各种 MB 规律对 LMXB 分叉期大小的影响。
The influence of the magnetic braking laws on the evolution of persistent and transient low-mass X-ray binaries
Swift J1858.6$-$0814 (hereafter J1858) is a transient neutron star low-mass
X-ray binary (NS LMXB). There is controversy regarding its donor mass derived
from observations and theoretical calculations. In this paper, we adopt seven
magnetic braking (MB) prescriptions suggested in the literature and different
metallicity $Z$ to simulate the evolution of the LMXB. Our results show that,
employing the MB model proposed by \citet{2012ApJ...746...43R} ("rm12"), the
Convection And Rotation Boosted ("carb") model \citep{2019ApJ...886L..31V}, as
well as the Intermediate ("inter") and Convection-boosted ("cboost") models in
\citet{2019MNRAS.483.5595V} can match (part of) the observational parameters of
J1858 well. We then apply our method to other observed LMXBs and find that the
"rm12" and "inter" MB laws are most promising in explaining transient LMXBs. In
comparison, the simulations with the "cboost" and "carb" MB laws are more
inclined to reproduce persistent LMXBs and ultra-compact X-ray binaries
(UCXBs), respectively. Our results, though subject to computational and/or
observational bias, show that it is challenging to find a unified MB law that
applies to the NS LMXB sub-populations simultaneously, indicating our lack of
understanding of the true MB law. In addition, we explore the influence of
various MB laws on the magnitude of the bifurcation periods in LMXBs.