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A Chandra detection of diffuse hard X-ray emission associated with the lobes of the radio galaxy 3C 452 | | N. Isobe
; M. Tashiro
; K. Makishima
; N. Iyomoto
; M. Suzuki
; M. M. Murakami
; M. Mori
; K. Abe
; | | Date: |
6 Nov 2002 | | Journal: | Astrophys.J. 580 (2002) L111-L116 | | Subject: | astro-ph | | Affiliation: | 1,3), M. Tashiro , K. Makishima (3,4), N. Iyomoto , M. Suzuki , M. M. Murakami , M. Mori (2,4), and K. Abe (Tsukuba Space Center, National Space Development Agency of Japan, Department of Physics, Saitama University, Department of Physics, Universit | | Abstract: | An 80 ksec Chandra ACIS observation of the radio galaxy 3C 452 is reported. A diffuse X-ray emission associated with the lobes has been detected with high statistical significance, together with the X-ray nucleus of the host galaxy. The 0.5--5 keV ACIS spectrum of the diffuse emission is described by a two-component model, consisting of a soft thermal plasma emission from the host galaxy halo and a hard non-thermal power-law component. The hard component is ascribed to the inverse Comptonization of cosmic microwave background photons by the synchrotron emitting electrons in the lobes, because its spectral energy index, 0.68+-0.28, is consistent with the radio synchrotron index, 0.78. These results reveal a significant electron dominance in the lobes. The electrons are inferred to have a relatively uniform distribution, while the magnetic field is compressed toward the lobe periphery. | | Source: | arXiv, astro-ph/0211112 | | Services: | Forum | Review | PDF | Favorites | |
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