反思裸奇点:以铁线拟合探究宇宙审查猜想

IF 4.7 3区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS
Andrew Mummery, Adam Ingram
{"title":"反思裸奇点:以铁线拟合探究宇宙审查猜想","authors":"Andrew Mummery, Adam Ingram","doi":"10.1093/mnras/stae140","DOIUrl":null,"url":null,"abstract":"We demonstrate that the X-ray iron line fitting technique can be leveraged as a powerful probe of the cosmic censorship conjecture. We do this by extending existing emission line models to arbitrary spin parameters of the Kerr metric, no longer restricted to black hole metrics with |a•| < 1. We show that the emission lines from naked singularity metrics (|a•| > 1) show significant differences to their black hole counterparts, even for those metrics with identical locations of the innermost stable circular orbit, i.e., emission line fitting does not suffer from the degeneracy which affects continuum fitting approaches. These differences are entirely attributable to the disappearance of the event horizon for |a•| > 1. We highlight some novel emission line features of naked singularity metrics, such as “inverted” emission lines (with sharp red wings and extended blue wings) and “triple lines”. The lack of detection of any of these novel features provides support of the cosmic censorship conjecture. We publicly release XSPEC packages skline and skconv which can now be used to probe the cosmic censorship conjecture in Galactic X-ray binaries and Active Galactic Nuclei. The inclusion of super-extremal spacetimes can be alternatively posed as a way of stress-testing conventional models of accretion.","PeriodicalId":18930,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"210 1","pages":""},"PeriodicalIF":4.7000,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Reflecting on naked singularities: iron line fitting as a probe of the cosmic censorship conjecture\",\"authors\":\"Andrew Mummery, Adam Ingram\",\"doi\":\"10.1093/mnras/stae140\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We demonstrate that the X-ray iron line fitting technique can be leveraged as a powerful probe of the cosmic censorship conjecture. We do this by extending existing emission line models to arbitrary spin parameters of the Kerr metric, no longer restricted to black hole metrics with |a•| < 1. We show that the emission lines from naked singularity metrics (|a•| > 1) show significant differences to their black hole counterparts, even for those metrics with identical locations of the innermost stable circular orbit, i.e., emission line fitting does not suffer from the degeneracy which affects continuum fitting approaches. These differences are entirely attributable to the disappearance of the event horizon for |a•| > 1. We highlight some novel emission line features of naked singularity metrics, such as “inverted” emission lines (with sharp red wings and extended blue wings) and “triple lines”. The lack of detection of any of these novel features provides support of the cosmic censorship conjecture. We publicly release XSPEC packages skline and skconv which can now be used to probe the cosmic censorship conjecture in Galactic X-ray binaries and Active Galactic Nuclei. The inclusion of super-extremal spacetimes can be alternatively posed as a way of stress-testing conventional models of accretion.\",\"PeriodicalId\":18930,\"journal\":{\"name\":\"Monthly Notices of the Royal Astronomical Society\",\"volume\":\"210 1\",\"pages\":\"\"},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-01-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Monthly Notices of the Royal Astronomical Society\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1093/mnras/stae140\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Monthly Notices of the Royal Astronomical Society","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1093/mnras/stae140","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0

摘要

我们证明了 X 射线铁线拟合技术可以作为宇宙审查猜想的有力探针。我们将现有的发射线模型扩展到克尔公因子的任意自旋参数,而不再局限于|a-| < 1的黑洞公因子。我们的研究表明,裸奇点公因子(|a-| >1)的发射线与黑洞公因子的发射线存在显著差异,即使是那些最内层稳定圆轨道位置完全相同的公因子也是如此,也就是说,发射线拟合不会出现影响连续面拟合方法的退化现象。这些差异完全归因于 |a-| > 1 事件视界的消失。 我们强调了裸奇点度量的一些新的发射线特征,如 "倒 "发射线(具有尖锐的红翼和延伸的蓝翼)和 "三重线"。这些新特征都没有被探测到,这为宇宙审查猜想提供了支持。我们公开发布了 XSPEC 软件包 skline 和 skconv,现在可以用它们来探测银河系 X 射线双星和活动星系核中的宇宙审查猜想。纳入超极端时空也可以作为对传统吸积模型进行压力测试的一种方式。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reflecting on naked singularities: iron line fitting as a probe of the cosmic censorship conjecture
We demonstrate that the X-ray iron line fitting technique can be leveraged as a powerful probe of the cosmic censorship conjecture. We do this by extending existing emission line models to arbitrary spin parameters of the Kerr metric, no longer restricted to black hole metrics with |a•| < 1. We show that the emission lines from naked singularity metrics (|a•| > 1) show significant differences to their black hole counterparts, even for those metrics with identical locations of the innermost stable circular orbit, i.e., emission line fitting does not suffer from the degeneracy which affects continuum fitting approaches. These differences are entirely attributable to the disappearance of the event horizon for |a•| > 1. We highlight some novel emission line features of naked singularity metrics, such as “inverted” emission lines (with sharp red wings and extended blue wings) and “triple lines”. The lack of detection of any of these novel features provides support of the cosmic censorship conjecture. We publicly release XSPEC packages skline and skconv which can now be used to probe the cosmic censorship conjecture in Galactic X-ray binaries and Active Galactic Nuclei. The inclusion of super-extremal spacetimes can be alternatively posed as a way of stress-testing conventional models of accretion.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
CiteScore
9.10
自引率
37.50%
发文量
3198
审稿时长
3 months
期刊介绍: Monthly Notices of the Royal Astronomical Society is one of the world''s leading primary research journals in astronomy and astrophysics, as well as one of the longest established. It publishes the results of original research in positional and dynamical astronomy, astrophysics, radio astronomy, cosmology, space research and the design of astronomical instruments.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信