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Preprint 12d/99


RXTE MONITORING OF CENTAURUS A

S. Benlloch (1), R.E. Rothschild (2), J. Wilms (1), C.S. Reynolds (3), W.A. Heindl (2), K. Pottschmidt (1), A. Orr (1), I. Kreykenbohm (1), R. Staubert (1)

(1) Institut für Astronomie und Astrophysik, Astronomie, Universität Tübingen, Waldhäuser Str. 64, D-72076 Tübingen, Germany
(2) CASS, University of California, San Diego, La Jolla, CA 92093, U.S.A.
(3) JILA, University of Colorado, Boulder, CO 80309, U.S.A.

To appear in: CONFERENCE PROCEEDINGS X-ray Astronomy '99, published in Astrophysical Letters and Communications, 1999,

Abstract. We analyze a 75 ksec observation of the active galaxy Centaurus A carried out with RXTE in 1998 August. The joint PCA/HEXTE broad band X-ray spectrum can be well described by a heavily absorbed (NH ~ 7x1022cm-2) power law with a photon index of GAMMA = 1.8. We present the interpretation of this spectrum in terms of Monte Carlo computations. No significant temporal variability was found during this observations.

Key words: -

Paper (59k gzip'ed Postscript including figures)


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