Investigating the EGRET-radio galaxies link with<i>INTEGRAL</i>: 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. Rodríguez, S. Chaty, S. Corbel

Type: Article

Publication Date: 2005-03-22

Citations: 12

DOI: https://doi.org/10.1051/0004-6361:20042353

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Abstract

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 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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