Identification of extragalactic sources of the highest energy EGRET photons by correlation analysis

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dc.creatorGorbunov, D. S.
dc.creatorTinyakov, P. G.
dc.creatorTkachev, I. I.
dc.creatorTroitsky, S. V.
dc.date2005-05-30
dc.date.accessioned2026-07-07T11:42:26Z
dc.date.available2026-07-07T11:42:26Z
dc.descriptionWe found significant correlations between the arrival directions of the highest energy photons (E>10 GeV) observed by EGRET and positions of the BL Lac type objects (BL Lacs). The observed correlations imply that not less than three per cent of extragalactic photons at these energies originate from BL Lacs. Some of the correlating BL Lacs have no counterparts in the EGRET source catalog, i.e. do not coincide with strong emitters of gamma-rays at lower energy. The study of correlating BL Lacs suggests that they may form a subset which is statistically different from the total BL Lac catalog; we argue that they are prominent candidates for TeV gamma-ray sources. Our results demonstrate that the analysis of positional correlations is a powerful approach indispensable in cases when low statistics limits or even prohibits the standard case-by-case identification.
dc.description5 pages, MNRAS style
dc.identifierhttps://arxiv.org/abs/astro-ph/0505597
dc.identifierhttp://arxiv.org/abs/astro-ph/0505597
dc.identifierMon.Not.Roy.Astron.Soc.Lett.362:L30-L34,2005
dc.identifierdoi:10.1111/j.1745-3933.2005.00068.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200883
dc.subjectAstrophysics
dc.titleIdentification of extragalactic sources of the highest energy EGRET photons by correlation analysis
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