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Institut für Astronomie und Astrophysik

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Preprint 05b/02

Evolution of the Timing Properties of Cyg X-1

J. Wilms (1), K. Pottschmidt (2;3), M.A. Nowak (4), G.G. Pooley (5), W.A. Heindl (6), D.M. Smith (7), R. Remillard (4) and R. Staubert (1)

(1) Institut für Astronomie und Astrophysik, Astronomie, Universität Tübingen, Sand 1, D-72076 Tübingen, Germany
(2) MPE, Postfach 1312, 85741 Garching, Germany
(3) ISDC, 16 Ch. d'Ecogia, 1290 Versoix, Switzerland
(4) CSR, MIT, 77 Massachusetts Ave., Cambridge MA02139, USA
(5) Cavendish Laboratory, Madingley Road, Cambridge CB3 OHE, England
(6) CASS, UCSD, La Jolla, CA 92093, USA
(7) SSL, UCB, Berkeley, CA 94720, USA

To appear in: Proceedings of the 4th Microquasar Workshop, eds. Ph Durouchoux, Y. Fuchs and J. Rodriguez, published by the Center for Space Physics: Kolkata

Abstract. The power spectrum of Cyg X-1 can be well described by the superposition of broad Lorentzian components. We summarize the results on the behavior of these Lorentzians as determined from our RXTE monitoring campaign from 1998 until the end of 2001, focusing on the "failed state transitions" of this source.

Key words: -

Paper (73k gzip'ed Postscript including figures)

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