Investigating the EGRET-radio galaxies link with INTEGRAL: the case of 3EG J1621+8203 and NGC 6251

L. Foschini , M. Chiaberge , P. Grandi , I.A. Grenier , M. Guainazzi , W. Hermsen , G.G.C. Palumbo , J. Rodriguez

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S. Chaty S. Corbel G. Di Cocco L. Kuiper G. Malaguti

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classification 🌌 astro-ph

keywords j1621contourserrorintegralobservedsourceanalysisblazar-like

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The analysis of an INTEGRAL AO2 observation of the error contours of the EGRET source 3EG J1621+8203 is presented. The only source found inside the error contours for energies between 20 and 30 keV at 5 sigma detection significance is the FR I radio galaxy NGC 6251. This supports the identification of NGC 6251 with 3EG J1621+8203. The observed flux is higher and softer than observed in the past, but consistent with a variable blazar-like spectral energy distribution.

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Investigating the EGRET-radio galaxies link with INTEGRAL: the case of 3EG J1621+8203 and NGC 6251

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