M. I. Belvedersky, A. V. Meshcheryakov, P. S. Medvedev, M. R. Gilfanov
{"title":"SRGz:利用Lockman孔数据建立x射线SRG/eROSITA光源的光学交叉匹配模型","authors":"M. I. Belvedersky, A. V. Meshcheryakov, P. S. Medvedev, M. R. Gilfanov","doi":"10.1134/S1063773722020013","DOIUrl":null,"url":null,"abstract":"<p>We present a probabilistic model built for the optical cross-match between the SRG/eROSITA X-ray sources and photometric data from the DESI Legacy Imaging Surveys. The model relies both on positional and photometric information on optical objects nearby X-ray sources and allows performing selection with precision and recall <span>\\({\\approx}94\\%\\)</span> (for <span>\\(F_{\\textrm{X,0.5-2}}>10^{-14}\\)</span> erg s<span>\\({}^{-1}\\)</span> cm<span>\\({}^{-2}\\)</span>). With this model, we calibrated positional error of the SRG/eROSITA sources detected in the Lockman Hole: <span>\\(\\sigma_{\\textrm{corr}}=0.87\\sqrt{\\sigma_{\\textrm{det}}^{2.53}+1.12^{2}}\\)</span>. The model will become a part of the SRGz system for data analysis of the X-ray data obtained from the all-sky SRG/eROSITA survey.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"SRGz: Building an Optical Cross-Match Model for the X-ray SRG/eROSITA Sources Using the Lockman Hole Data\",\"authors\":\"M. I. Belvedersky, A. V. Meshcheryakov, P. S. Medvedev, M. R. Gilfanov\",\"doi\":\"10.1134/S1063773722020013\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>We present a probabilistic model built for the optical cross-match between the SRG/eROSITA X-ray sources and photometric data from the DESI Legacy Imaging Surveys. The model relies both on positional and photometric information on optical objects nearby X-ray sources and allows performing selection with precision and recall <span>\\\\({\\\\approx}94\\\\%\\\\)</span> (for <span>\\\\(F_{\\\\textrm{X,0.5-2}}>10^{-14}\\\\)</span> erg s<span>\\\\({}^{-1}\\\\)</span> cm<span>\\\\({}^{-2}\\\\)</span>). With this model, we calibrated positional error of the SRG/eROSITA sources detected in the Lockman Hole: <span>\\\\(\\\\sigma_{\\\\textrm{corr}}=0.87\\\\sqrt{\\\\sigma_{\\\\textrm{det}}^{2.53}+1.12^{2}}\\\\)</span>. The model will become a part of the SRGz system for data analysis of the X-ray data obtained from the all-sky SRG/eROSITA survey.</p>\",\"PeriodicalId\":55443,\"journal\":{\"name\":\"Astronomy Letters-A Journal of Astronomy and Space Astrophysics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2022-10-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Astronomy Letters-A Journal of Astronomy and Space Astrophysics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1063773722020013\",\"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":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063773722020013","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}
SRGz: Building an Optical Cross-Match Model for the X-ray SRG/eROSITA Sources Using the Lockman Hole Data
We present a probabilistic model built for the optical cross-match between the SRG/eROSITA X-ray sources and photometric data from the DESI Legacy Imaging Surveys. The model relies both on positional and photometric information on optical objects nearby X-ray sources and allows performing selection with precision and recall \({\approx}94\%\) (for \(F_{\textrm{X,0.5-2}}>10^{-14}\) erg s\({}^{-1}\) cm\({}^{-2}\)). With this model, we calibrated positional error of the SRG/eROSITA sources detected in the Lockman Hole: \(\sigma_{\textrm{corr}}=0.87\sqrt{\sigma_{\textrm{det}}^{2.53}+1.12^{2}}\). The model will become a part of the SRGz system for data analysis of the X-ray data obtained from the all-sky SRG/eROSITA survey.
期刊介绍:
Astronomy Letters is an international peer reviewed journal that publishes the results of original research on all aspects of modern astronomy and astrophysics including high energy astrophysics, cosmology, space astronomy, theoretical astrophysics, radio astronomy, extragalactic astronomy, stellar astronomy, and investigation of the Solar system.