AGNs among ROSAT Blank Field Sources

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dc.creatorCagnoni, I.
dc.creatorElvis, M.
dc.creatorKim, D. -W.
dc.creatorHuang, J. -S.
dc.creatorCelotti, A.
dc.creatorNicastro, F.
dc.date2002-12-10
dc.date.accessioned2026-07-07T02:06:48Z
dc.date.available2026-07-07T02:06:48Z
dc.descriptionWe selected a sample of sources with high X-ray over optical flux ratio from the ROSAT PSPC archives. Out of the 16 sources in our sample, one is a (possibly extreme) BL Lac and two are AGNs. Six more sources are tentatively classified as AGNs on the basis of their X-ray properties and of our optical-IR imaging. For one of the AGNs and for the AGN-like blanks we find a discrepancy between the lack of absorption indicated by the X-ray spectra and the presence of red counterparts in their error circles. We discuss various possibilities to reconcile the X-ray and optical information.
dc.description4 pages, 1 table. Proceedings of the 5th Italian AGN Meeting "Inflows, Outflows and Reprocessing around black holes" (2002) on-line edition only available at http://www.merate.mi.astro.it/~gabriele/agn5/agn5.html
dc.identifierhttps://arxiv.org/abs/astro-ph/0212231
dc.identifierhttp://arxiv.org/abs/astro-ph/0212231
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/5491
dc.subjectAstrophysics
dc.titleAGNs among ROSAT Blank Field Sources
dc.typetext

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