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

doi:10.1051/0004-6361:20042353

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

École Polytechnique

Research output: Contribution to journal › Article › peer-review

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 5σ 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.

Original language	English
Pages (from-to)	515-518
Number of pages	4
Journal	Astronomy and Astrophysics
Volume	433
Issue number	2
DOIs	https://doi.org/10.1051/0004-6361:20042353
Publication status	Published - 1 Apr 2005

Keywords

Galaxies: active
Galaxies: individual: NGC 6251
X-rays: galaxies

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10.1051/0004-6361:20042353

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Foschini, L., Chiaberge, M., Grandi, P., Grenier, I. A., Guainazzi, M., Hermsen, W., Palumbo, G. G. C., Rodriguez, J., Chaty, S., Corbel, S., Di Cocco, G., Kuiper, L., & Malaguti, G. (2005). Investigating the EGRET-radio galaxies link with INTEGRAL: The case of 3EG J1621+8203 and NGC 6251. Astronomy and Astrophysics, 433(2), 515-518. https://doi.org/10.1051/0004-6361:20042353

@article{2d063573e38b49c68d88135c8a30ca1f,

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

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 5σ 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.",

keywords = "Galaxies: active, Galaxies: individual: NGC 6251, X-rays: galaxies",

author = "L. Foschini and M. Chiaberge and P. Grandi and Grenier, \{I. A.\} and M. Guainazzi and W. Hermsen and Palumbo, \{G. G.C.\} and J. Rodriguez and S. Chaty and S. Corbel and \{Di Cocco\}, G. and L. Kuiper and G. Malaguti",

year = "2005",

month = apr,

day = "1",

doi = "10.1051/0004-6361:20042353",

language = "English",

volume = "433",

pages = "515--518",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

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Foschini, L, Chiaberge, M, Grandi, P, Grenier, IA, Guainazzi, M, Hermsen, W, Palumbo, GGC, Rodriguez, J, Chaty, S, Corbel, S, Di Cocco, G, Kuiper, L & Malaguti, G 2005, 'Investigating the EGRET-radio galaxies link with INTEGRAL: The case of 3EG J1621+8203 and NGC 6251', Astronomy and Astrophysics, vol. 433, no. 2, pp. 515-518. https://doi.org/10.1051/0004-6361:20042353

TY - JOUR

T1 - Investigating the EGRET-radio galaxies link with INTEGRAL

T2 - The case of 3EG J1621+8203 and NGC 6251

AU - Foschini, L.

AU - Chiaberge, M.

AU - Grandi, P.

AU - Grenier, I. A.

AU - Guainazzi, M.

AU - Hermsen, W.

AU - Palumbo, G. G.C.

AU - Rodriguez, J.

AU - Chaty, S.

AU - Corbel, S.

AU - Di Cocco, G.

AU - Kuiper, L.

AU - Malaguti, G.

PY - 2005/4/1

Y1 - 2005/4/1

N2 - 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 5σ 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.

AB - 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 5σ 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.

KW - Galaxies: active

KW - Galaxies: individual: NGC 6251

KW - X-rays: galaxies

U2 - 10.1051/0004-6361:20042353

DO - 10.1051/0004-6361:20042353

M3 - Article

AN - SCOPUS:20144389118

SN - 0004-6361

VL - 433

SP - 515

EP - 518

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 2

ER -

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

Abstract

Keywords

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