2012A&A...542A..19Y


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.12CET03:12:45

2012A&A...542A..19Y - Astronomy and Astrophysics, volume 542A, 19-19 (2012/6-1)

Deep observation of the giant radio lobes of Centaurus A with the Fermi Large Area Telescope.

YANG R.-Z., SAHAKYAN N., DE ONA WILHELMI E., AHARONIAN F. and RIEGER F.

Abstract (from CDS):

The detection of high-energy (HE) γ-ray emission up to ∼3GeV from the giant lobes of the radio galaxy Centaurus A has been recently reported by the Fermi-LAT Collaboration based on ten months of all-sky survey observations. A data set more than three times larger is used here to study the morphology and photon spectrum of the lobes with higher statistics. The larger data set results in the detection of HE γ-ray emission (up to ∼6GeV) from the lobes with a significance of more than 10 and 20σ for the north and the south lobe, respectively. Based on a detailed spatial analysis and comparison with the associated radio lobes, we report evidence for a substantial extension of the HE γ-ray emission beyond the WMAP radio image for the northern lobe of Cen A. We reconstructed the spectral energy distribution (SED) of the lobes using radio (WMAP) and Fermi-LAT data from the same integration region. The implications are discussed in the context of hadronic and time-dependent leptonic scenarios.

Abstract Copyright:

Journal keyword(s): gamma rays: galaxies - radiation mechanisms: non-thermal - galaxies: active

Simbad objects: 14

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Number of rows : 14

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 2FGL J1259.8-3749 BLL 12 59 49.8021883488 -37 48 58.174175793           ~ 23 0
2 2FGL J1303.5-4622 QSO 13 03 40.2821404108 -46 21 02.452578175       0   ~ 34 0
3 2FGL J1304.3-4353 BLL 13 04 21.0058121281 -43 53 10.200297624 16.09 15.84 15.71     ~ 50 0
4 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1231 2
5 ESO 323-77 Sy2 13 06 26.1213873662 -40 24 52.594127368   13.58 13.42 12.01   ~ 183 0
6 2FGL J1307.5-4300 BLL 13 07 37.64 -42 59 38.2 16.39 16.10 15.92     ~ 41 0
7 NAME Cen A Core PoG 13 25 27.61507 -43 01 08.8053           ~ 32 0
8 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 3894 3
9 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 2917 0
10 2FGL J1335.3-4058 Bla 13 35 44.77 -41 01 10.5           ~ 13 0
11 ICRF J134740.4-375036 QSO 13 47 40.4286387215 -37 50 36.636600003       19.1   ~ 45 1
12 ICRF J135256.5-441240 BLL 13 52 56.53491 -44 12 40.3874   16.95 16.37     ~ 97 3
13 2FGL J1359.9-3746 BLL 13 59 49.7177981087 -37 46 00.845438859 17.83 17.57 17.19 15   ~ 33 1
14 3FGL J1407.7-4256 BLL 14 07 39.7210 -43 02 31.938           ~ 28 0

    Equat.    Gal    SGal    Ecl

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2019.11.12-03:12:45

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