BL Lacertae identifications in a ROSAT-selected sample of Fermi unidentified objects⋆,⋆⋆

dc.creatorVahram Chavushyan
dc.date2013-09-23
dc.date.accessioned2023-07-25T16:25:15Z
dc.date.available2023-07-25T16:25:15Z
dc.identifierhttp://inaoe.repositorioinstitucional.mx/jspui/handle/1009/2250
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7807431
dc.descriptionThe optical spectroscopic followup of 27 sources belonging to a sample of 30 high-energy objects selected by positionally cross correlating the first Fermi/LAT Catalog and the ROSAT All-Sky Survey Bright Source Catalog is presented here. It has been found or confirmed that 25 of them are BL Lacertae objects (BL Lacs), while the remaining two are Galactic cataclysmic variables (CVs). This strongly suggests that the sources in the first group are responsible for the GeV emission detected with Fermi, while the two CVs most likely represent spurious associations. We thus find an 80% a posteriori probability that the sources selected by matching GeV and X-ray catalogs belong to the BL Lac class. We also show suggestions that the BL Lacs selected with this approach are probably high-synchrotron-peaked sources and in turn good candidates for the detection of ultra-high-energy (TeV) photons from them.
dc.formatapplication/pdf
dc.languageeng
dc.publisherAstronomy & Astrophysics
dc.relationcitation:Masetti, N., et al., (2013), BL Lacertae identifications in a ROSAT-selected sample of Fermi unidentified objects⋆,⋆⋆, Astronomy & Astrophysics, Vol. 559(A58):1-16
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subjectinfo:eu-repo/classification/Inspec/Gamma rays: galaxies
dc.subjectinfo:eu-repo/classification/Inspec/BL Lacertae objects: general
dc.subjectinfo:eu-repo/classification/Inspec/Novae, cataclysmic variables
dc.subjectinfo:eu-repo/classification/Inspec/Techniques: spectroscopic
dc.subjectinfo:eu-repo/classification/cti/1
dc.subjectinfo:eu-repo/classification/cti/21
dc.subjectinfo:eu-repo/classification/cti/21
dc.titleBL Lacertae identifications in a ROSAT-selected sample of Fermi unidentified objects⋆,⋆⋆
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/acceptedVersion
dc.audiencestudents
dc.audienceresearchers
dc.audiencegeneralPublic


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