Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Articles Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource A method for identification of restarted radio sources from large radiosurveys Subject The topic of the resource catalogs; galaxies: active; radio continuum: galaxies; Surveys Description An account of the resource Active galaxies hosting radio jets can exhibit distinct active phases marked by two sets of radio lobes. Typically, these episodic radio sources have been identified through morphological observations. In addition, spectral characteristics-based methods are also employed wherever multi-frequency deep radio observations are available. However, these methods are inefficient in detecting restarted radio sources that do not exhibit a clear morphology. To address this, a method of using the spectral curvature (SPC=?150MHz1400MHz-?74MHz150MHz) to identify restarted radio sources is presented. This is based on the fact that restarted radio sources with significant remnant emission are expected to have concave spectra in contrast to the convex or straight spectra observed in most radio sources. We use available wide area radio surveys in the range of frequencies from 74MHz to 1.4GHz to search for episodic radio sources and to shortlist 9,405 sources based on the criteria of SPC?0.5. The candidates thus identified can be followed up for detailed morphological and spectral index studies. This method will find application in the automated identification of episodic radio sources in large radio sky surveys from telescopes like LOFAR and SKA. Indian Academy of Sciences 2025. Creator An entity primarily responsible for making the resource Raj A.; Ishwara-Chandra C.H.; Sudheesh T.P.; Biju K.G.; Jacob J. Source A related resource from which the described resource is derived Journal of Astrophysics and Astronomy, Vol-46, No. 1 Publisher An entity responsible for making the resource available Springer Date A point or period of time associated with an event in the lifecycle of the resource 2025-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1007/s12036-024-10035-7" target="_blank" rel="noreferrer noopener">https://doi.org/10.1007/s12036-024-10035-7</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85213939605&amp;doi=10.1007%2Fs12036-024-10035-7&amp;partnerID=40&amp;md5=15fba6479761c9e2a7b6b362f0e25052" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85213939605&amp;doi=10.1007%2fs12036-024-10035-7&amp;partnerID=40&amp;md5=15fba6479761c9e2a7b6b362f0e25052</a> Rights Information about rights held in and over the resource Restricted Access Relation A related resource ISSN: 2506335 Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Article Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Raj A., Newman College, Thodupuzha, 685584, India, K. E. College, Mannanam, 686561, India; Ishwara-Chandra C.H., National Centre for Radio Astrophysics, TIFR, Post Bag No. 3, Ganeshkhind, Pune, 411007, India; Sudheesh T.P., Christ (Deemed to be University), Hosur Rd, Bengaluru, 560029, India; Biju K.G., WMO Arts, and Science college, Muttil, Wayanad, 673122, India; Jacob J., Newman College, Thodupuzha, 685584, India