XMM-NEWTON Observation of the Seyfert 2 Galaxy NGC 4138

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dc.creatorFoschini, L.
dc.creatorPanessa, F.
dc.creatorLonginotti, A. L.
dc.creatorHo, L. C.
dc.creatorBassani, L.
dc.creatorCappi, M.
dc.creatorDadina, M.
dc.creatorMalaguti, G.
dc.creatorDi Cocco, G.
dc.creatorGianotti, F.
dc.creatorStephen, J. B.
dc.creatorTrifoglio, M.
dc.date2002-09-05
dc.date.accessioned2026-07-07T02:04:59Z
dc.date.available2026-07-07T02:04:59Z
dc.descriptionThe XMM-Newton data presented here are the first X-ray observation of the Seyfert 2 galaxy NGC4138. Although the galaxy has been pointed by ROSAT-HRI, it was not detected, with a flux upper limit of about 1.1x10^-13 erg cm^-2 s^-1 in the 0.2-2.4 keV energy band. XMM-Newton performed the observation on 26 November 2001. The source is detected for the first time in X-rays with F[0.2-2.4]=1.0x10^-13 erg cm^-2 s^-1, in agreement with the upper limit of ROSAT. The source spectrum is typical of Seyfert 2 galaxies. We find heavy obscuration (N_H about 8x10^22 cm^-2) and a flat photon index (1.6). The source intrinsic luminosity is about 5x10^41 erg/s in the 0.5-10 keV energy band.
dc.description4 pages, 3 figures. Presented at AGN05: Inflows, Outflows and Reprocessing around black holes, Como (Italy), 11-14 June 2002. To appear in the Proceedings. If you have problems in download, please check also this http://www.bo.iasf.cnr.it/~foschini/pub/0209098.ps.gz
dc.identifierhttps://arxiv.org/abs/astro-ph/0209098
dc.identifierhttp://arxiv.org/abs/astro-ph/0209098
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/4973
dc.subjectAstrophysics
dc.titleXMM-NEWTON Observation of the Seyfert 2 Galaxy NGC 4138
dc.typetext

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