{"title":"A new catalog of head–tail radio galaxies from LoTSS DR1","authors":"Sabyasachi Pal, Shobha Kumari","doi":"10.1007/s12036-022-09892-x","DOIUrl":null,"url":null,"abstract":"<div><p>The unique morphology of head–tail (HT) radio galaxies suggests that radio jets and their intra-cluster medium interact strongly. We conducted a systematic search for HT radio galaxies using the LOFAR two-meter sky survey first data release (LoTSS DR1) at 144 MHz. In this paper, a catalog of 55 new HT radio galaxies is presented, 10 of which are narrow-angle tailed sources (NATs) and 45 are wide-angle-tailed sources (WATs). NATs are characterized by tails that are bent like a narrow ‘V’ shape with a <90<span>\\(^{\\circ }\\)</span> opening angle. The opening angle between jets in WAT radio galaxies is >90<span>\\(^{\\circ }\\)</span>, exhibiting wide ‘C’-like morphologies. We found that 30 out of 55 HT radio galaxies reported in this paper are associated with known galaxy clusters. Most of the sources presented in the current paper have redshifts <0.5. Various physical properties and statistical studies of these HT radio galaxies are presented.</p></div>","PeriodicalId":610,"journal":{"name":"Journal of Astrophysics and Astronomy","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Astrophysics and Astronomy","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s12036-022-09892-x","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}
引用次数: 2
Abstract
The unique morphology of head–tail (HT) radio galaxies suggests that radio jets and their intra-cluster medium interact strongly. We conducted a systematic search for HT radio galaxies using the LOFAR two-meter sky survey first data release (LoTSS DR1) at 144 MHz. In this paper, a catalog of 55 new HT radio galaxies is presented, 10 of which are narrow-angle tailed sources (NATs) and 45 are wide-angle-tailed sources (WATs). NATs are characterized by tails that are bent like a narrow ‘V’ shape with a <90\(^{\circ }\) opening angle. The opening angle between jets in WAT radio galaxies is >90\(^{\circ }\), exhibiting wide ‘C’-like morphologies. We found that 30 out of 55 HT radio galaxies reported in this paper are associated with known galaxy clusters. Most of the sources presented in the current paper have redshifts <0.5. Various physical properties and statistical studies of these HT radio galaxies are presented.
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.