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2 NASA Post-doc Research Associate

By A. Markowitz, T. Takahashi, S. Watanabe, K. Nakazawa, Y. Fukazawa, K. Makishima, H. Awaki, A. Bamba, N. Isobe, J. Kataoka, Madejski R. Mushotzky T. Okajima and T. Yaqoob


A Suzaku observation of the nucleus of the radio-loud AGN Centaurus A in 2005 has yielded a broadband spectrum spanning 0.3 to 250 keV. The net exposure times after screening were: 70 ks per X-ray Imaging Spectrometer (XIS) camera, 60.8 ks for the Hard X-ray Detector (HXD) PIN, and 17.1 ks for the HXD-GSO. The hard X-rays are fit by two power-laws of the same slope, absorbed by columns of 1.5 and 7 × 10 23 cm −2 respectively. The spectrum is consistent with previous suggestions that the power-law components are X-ray emission from the sub-pc VLBI jet and from Bondi accretion at the core, but it is also consistent with a partial covering interpretation. The soft band is dominated by thermal emission from the diffuse plasma and is fit well by a two-temperature vapec model, plus a thir

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