Ia型超新星光曲线标准化参数与红移的关系

A. P. Mahtessian, G. Karapetian, M. A. M. A. Hovhannisyan, L. A. Mahtessian
{"title":"Ia型超新星光曲线标准化参数与红移的关系","authors":"A. P. Mahtessian, G. Karapetian, M. A. M. A. Hovhannisyan, L. A. Mahtessian","doi":"10.52526/25792776-23.70.1-114","DOIUrl":null,"url":null,"abstract":"The paper shows that the parameters X1 and C used to standardize the luminosity of type Ia supernovae in the SALT2 model are highly dependent on redshift. This leads to the fact that during standardization, with increasing z, the average absolute stellar magnitude of type Ia supernovae artificially increases and, therefore, for a given apparent magnitude, we attribute to them, on average, a greater distance than they actually have. And therefore, it is believed that they are receding with acceleration. Therefore, such standardization is unsuitable for measuring distances to type Ia supernovae. If the standardization parameter (−αX1 + βC) is replaced by the redshift-dependent parameter (εz), then the parameter ΩΛ turns into 0 in the ΛCDM model.","PeriodicalId":412578,"journal":{"name":"Communications of the Byurakan Astrophysical Observatory","volume":"151 9 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Dependence of standardization parameters of type Ia supernova light curves on redshift\",\"authors\":\"A. P. Mahtessian, G. Karapetian, M. A. M. A. Hovhannisyan, L. A. Mahtessian\",\"doi\":\"10.52526/25792776-23.70.1-114\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The paper shows that the parameters X1 and C used to standardize the luminosity of type Ia supernovae in the SALT2 model are highly dependent on redshift. This leads to the fact that during standardization, with increasing z, the average absolute stellar magnitude of type Ia supernovae artificially increases and, therefore, for a given apparent magnitude, we attribute to them, on average, a greater distance than they actually have. And therefore, it is believed that they are receding with acceleration. Therefore, such standardization is unsuitable for measuring distances to type Ia supernovae. If the standardization parameter (−αX1 + βC) is replaced by the redshift-dependent parameter (εz), then the parameter ΩΛ turns into 0 in the ΛCDM model.\",\"PeriodicalId\":412578,\"journal\":{\"name\":\"Communications of the Byurakan Astrophysical Observatory\",\"volume\":\"151 9 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-07-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Communications of the Byurakan Astrophysical Observatory\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.52526/25792776-23.70.1-114\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Communications of the Byurakan Astrophysical Observatory","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.52526/25792776-23.70.1-114","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

研究表明,SALT2模型中用于标准化Ia型超新星光度的参数X1和C高度依赖于红移。这导致了这样一个事实:在标准化过程中,随着z的增加,Ia型超新星的平均绝对星等人为地增加,因此,对于给定的视星等,我们平均赋予它们的距离比它们实际拥有的距离要大。因此,人们相信它们正在加速后退。因此,这种标准化不适合测量到Ia型超新星的距离。如果将标准化参数(−αX1 + βC)替换为红移相关参数(εz),则在ΛCDM模型中参数ΩΛ变为0。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dependence of standardization parameters of type Ia supernova light curves on redshift
The paper shows that the parameters X1 and C used to standardize the luminosity of type Ia supernovae in the SALT2 model are highly dependent on redshift. This leads to the fact that during standardization, with increasing z, the average absolute stellar magnitude of type Ia supernovae artificially increases and, therefore, for a given apparent magnitude, we attribute to them, on average, a greater distance than they actually have. And therefore, it is believed that they are receding with acceleration. Therefore, such standardization is unsuitable for measuring distances to type Ia supernovae. If the standardization parameter (−αX1 + βC) is replaced by the redshift-dependent parameter (εz), then the parameter ΩΛ turns into 0 in the ΛCDM model.
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
自引率
0.00%
发文量
0
×
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:604180095
Book学术官方微信