{"title":"平方公里阵列探测无宿主星系际超新星遗迹的可能性","authors":"Amitesh Omar","doi":"10.1007/s12036-023-09912-4","DOIUrl":null,"url":null,"abstract":"<div><p>Possibilities to detect hostless supernova remnants (hl-SNR) in intergalactic medium using the 1 GHz band of the Square Kilometre Array (SKA) are discussed. The optical detection rate of the hl-SN constrained from the Sloan Digital Sky Survey is used to predict a number of detectable hl-SNRs in the radio band. With an anticipated detection sensitivity (<span>\\({\\sim }\\,1\\, \\)</span> <span>\\(\\upmu \\)</span>Jy) and angular resolution (<span>\\({<}1''\\)</span>) with the SKA, a significant number of hl-SNR are expected to get detected in the nearby galaxy groups, such as local group, Virgo, Fornax and Eridanus. A few very luminous hl-SNR may also be detected in the Coma cluster and other rich galaxy clusters up to about 100 Mpc distance. The identification of individual SNRs against other background radio sources will require sub-arcsec angular resolution at 1 GHz to resolve the characteristic circular morphology of the radio SNRs in nearby groups. At larger distances, where individual SNR cannot be resolved, a population of hl-SNR may also be constrained statistically in a small region, by estimating excess unresolved radio sources without a known optical host in a group or cluster, compared to the number density of the background radio sources at <span>\\(\\upmu \\)</span>Jy flux level.</p></div>","PeriodicalId":610,"journal":{"name":"Journal of Astrophysics and Astronomy","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Detection possibilities of hostless intergalactic supernova remnants with Square Kilometre Array\",\"authors\":\"Amitesh Omar\",\"doi\":\"10.1007/s12036-023-09912-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Possibilities to detect hostless supernova remnants (hl-SNR) in intergalactic medium using the 1 GHz band of the Square Kilometre Array (SKA) are discussed. The optical detection rate of the hl-SN constrained from the Sloan Digital Sky Survey is used to predict a number of detectable hl-SNRs in the radio band. With an anticipated detection sensitivity (<span>\\\\({\\\\sim }\\\\,1\\\\, \\\\)</span> <span>\\\\(\\\\upmu \\\\)</span>Jy) and angular resolution (<span>\\\\({<}1''\\\\)</span>) with the SKA, a significant number of hl-SNR are expected to get detected in the nearby galaxy groups, such as local group, Virgo, Fornax and Eridanus. A few very luminous hl-SNR may also be detected in the Coma cluster and other rich galaxy clusters up to about 100 Mpc distance. The identification of individual SNRs against other background radio sources will require sub-arcsec angular resolution at 1 GHz to resolve the characteristic circular morphology of the radio SNRs in nearby groups. At larger distances, where individual SNR cannot be resolved, a population of hl-SNR may also be constrained statistically in a small region, by estimating excess unresolved radio sources without a known optical host in a group or cluster, compared to the number density of the background radio sources at <span>\\\\(\\\\upmu \\\\)</span>Jy flux level.</p></div>\",\"PeriodicalId\":610,\"journal\":{\"name\":\"Journal of Astrophysics and Astronomy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2023-02-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Astrophysics and Astronomy\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12036-023-09912-4\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Astrophysics and Astronomy","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s12036-023-09912-4","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}
Detection possibilities of hostless intergalactic supernova remnants with Square Kilometre Array
Possibilities to detect hostless supernova remnants (hl-SNR) in intergalactic medium using the 1 GHz band of the Square Kilometre Array (SKA) are discussed. The optical detection rate of the hl-SN constrained from the Sloan Digital Sky Survey is used to predict a number of detectable hl-SNRs in the radio band. With an anticipated detection sensitivity (\({\sim }\,1\, \)\(\upmu \)Jy) and angular resolution (\({<}1''\)) with the SKA, a significant number of hl-SNR are expected to get detected in the nearby galaxy groups, such as local group, Virgo, Fornax and Eridanus. A few very luminous hl-SNR may also be detected in the Coma cluster and other rich galaxy clusters up to about 100 Mpc distance. The identification of individual SNRs against other background radio sources will require sub-arcsec angular resolution at 1 GHz to resolve the characteristic circular morphology of the radio SNRs in nearby groups. At larger distances, where individual SNR cannot be resolved, a population of hl-SNR may also be constrained statistically in a small region, by estimating excess unresolved radio sources without a known optical host in a group or cluster, compared to the number density of the background radio sources at \(\upmu \)Jy flux level.
期刊介绍:
The journal publishes original research papers on all aspects of astrophysics and astronomy, including instrumentation, laboratory astrophysics, and cosmology. Critical reviews of topical fields are also published.
Articles submitted as letters will be considered.