TY - GEN
T1 - The electron and magnetic field energies in the east lobe of the radio galaxy fornax a, measured with XMM-Newton
AU - Isobe, N.
AU - Makishima, K.
AU - Tashiro, M.
AU - Ito, K.
AU - Iyomoto, Naoko
AU - Kaneda, H.
PY - 2006/4/10
Y1 - 2006/4/10
N2 - In an XMM-Newton observation of the east lobe of nearby radio galaxy Fonrax A, we have significantly detected the diffuse X-ray emission, which was originally discovered by ASCA and ROSAT. The X-ray spectrum of the diffuse emission is described by a single power-law model, modified with the Galactic absorption toward the object. The best-fit X-ray photon index, 1.62 -0.15,0.25 agrees well with the synchrotron radio index, 1.68 ±0.05, between 29.9 MHz and 5 GHz. Therefore, the inverse Compton interpretation for the diffuse X-ray emission is justified. A comparison between the radio and X-ray flux densities gives a moderate electron-energy dominance over in the east lobe of Fornax A, in spite of the dormancy of its nucleus. We also reexamined the ASCA result on the west lobe, to find that both lobes share the similar physical condition.
AB - In an XMM-Newton observation of the east lobe of nearby radio galaxy Fonrax A, we have significantly detected the diffuse X-ray emission, which was originally discovered by ASCA and ROSAT. The X-ray spectrum of the diffuse emission is described by a single power-law model, modified with the Galactic absorption toward the object. The best-fit X-ray photon index, 1.62 -0.15,0.25 agrees well with the synchrotron radio index, 1.68 ±0.05, between 29.9 MHz and 5 GHz. Therefore, the inverse Compton interpretation for the diffuse X-ray emission is justified. A comparison between the radio and X-ray flux densities gives a moderate electron-energy dominance over in the east lobe of Fornax A, in spite of the dormancy of its nucleus. We also reexamined the ASCA result on the west lobe, to find that both lobes share the similar physical condition.
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M3 - Conference contribution
AN - SCOPUS:33645517114
SN - 9290929154
SN - 9789290929154
T3 - European Space Agency, (Special Publication) ESA SP
SP - 585
EP - 589
BT - X-ray Universe 2005
T2 - X-ray Universe 2005
Y2 - 26 September 2005 through 30 September 2005
ER -