BL Lacertae identifications in a ROSAT-selected sample of <i>Fermi</i> unidentified objects

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dc.contributor.authorMasetti, N.
dc.contributor.authorSbarufatti, B.
dc.contributor.authorParisi, P.
dc.contributor.authorJimenez-Bailon, E.
dc.contributor.authorChavushyan, V.
dc.contributor.authorVogt, F. P. A.
dc.contributor.authorSguera, V.
dc.contributor.authorStephen, J. B.
dc.contributor.authorPalazzi, E.
dc.contributor.authorBassani, L.
dc.contributor.authorBazzano, A.
dc.contributor.authorFiocchi, M.
dc.contributor.authorGalaz, G.
dc.contributor.authorLandi, R.
dc.contributor.authorMalizia, A.
dc.contributor.authorMinniti, D.
dc.contributor.authorMorelli, L.
dc.contributor.authorUbertini, P.
dc.date.accessioned2025-01-24T00:08:12Z
dc.date.available2025-01-24T00:08:12Z
dc.date.issued2013
dc.description.abstractThe 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.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361/201322611
dc.identifier.eissn1432-0746
dc.identifier.issn0004-6361
dc.identifier.urihttps://doi.org/10.1051/0004-6361/201322611
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101952
dc.identifier.wosidWOS:000327847200058
dc.language.isoen
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectgamma rays: galaxies
dc.subjectBL Lacertae objects: general
dc.subjectnovae, cataclysmic variables
dc.subjecttechniques: spectroscopic
dc.titleBL Lacertae identifications in a ROSAT-selected sample of <i>Fermi</i> unidentified objects
dc.typeartículo
dc.volumen559
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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