The 35 day cycle of Her X-1 and the coronal wind model

Details The 35 day cycle of Her X-1 and the coronal wind model The 35 day cycle of Her X-1 and the coronal wind model

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..410..763s&link_type=abstract

The fourth compton symposium. AIP Conference Proceedings, Volume 410, pp. 763-767 (1997).

Computer Science

3

Pulsars, Neutron Stars, Accretion And Accretion Disks, Stellar Rotation, Mass Loss And Stellar Winds

Scientific paper

We present the longterm behaviour of the pulse period and the 35 day precession including historical data as well as new results from GRO/BATSE and the All Sky Monitor onboard RXTE. We find a strong correlation showing shorter precession periods during spin-down phases. Spin-down corresponds to smaller accretion rates (Gosh and Lamb 1979). With reference to the coronal wind model we propose now that the shape of the warped accretion disk depends on the accretion rate. And the precessional period depends on the disk shape. The effect is of the right order to explain the observed correlation.

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