Multi-Band Analysis of Abell 2255

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dc.creatorHudaverdi, M.
dc.creatorErcan, E. N.
dc.creatorMert-Ankar, A.
dc.creatorGok, F.
dc.creatorAktekin, E.
dc.creatorGun, G. I.
dc.creatorUgras, B.
dc.creatorGuver, T.
dc.creatorKunieda, H.
dc.date2008-03-14
dc.date.accessioned2026-07-07T09:26:53Z
dc.date.available2026-07-07T09:26:53Z
dc.descriptionWe analyzed the data for the nearby cluster of galaxies Abell 2255 from archival XMM-Newton observations in order to search for the properties of X-ray point like structures in the outskirts. 11 point-like X-ray emission is detected. Detected X-ray sources are then observed with the 1.5 meter RTT-150 at Turkish National Observatory for possible optical counterparts. The cluster field is covered through 5 ANDOR photometer pointings. 3 sources have no optical follow-ups. 2 QSOs and 1 star are observed from the field. For 4 sources we have obtained the corresponding redhifts. The cumulative log(N)-log(S) is studied and the cluster source number is calculated to be 4 times higher than the field at Fx~10E-13 ergs cm-2 s-1. This phenomenon is interpreted as increased galaxy activity as they first encounter high density ICM environment at the cluster outskirt. We suggest that X-ray emission is triggered by either increased accretion onto LMXBs, fueling of AGNs and/or awakening of BHs.
dc.description19 pages, 22 figures
dc.identifierhttps://arxiv.org/abs/0803.2168
dc.identifierhttp://arxiv.org/abs/0803.2168
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/156911
dc.subjectAstrophysics
dc.titleMulti-Band Analysis of Abell 2255
dc.typetext

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