Accretion-Ejection Instability: jet and QPOs

Details Accretion-Ejection Instability: jet and QPOs Accretion-Ejection Instability: jet and QPOs

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sf2a.conf..335v&link_type=abstract

SF2A-2002: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 24-29, 2002, Eds.: F. Combes and D. Barret,

Astronomy and Astrophysics

Astrophysics

Scientific paper

The Accretion-Ejection Instability (AEI) occurs in the inner region of a disk threaded by a vertical magnetic field of the order of equipartition with gas pressure. This instability provides a way to connect accretion (in the inner region of the disk) with the ejection (energy for a jet or a wind). It is also a possible explanation for the low frequency Quasi-Periodic Oscillation (QPO) observed in X-ray binaries. We present new results on the modelisation of the QPO from the instability, and on the connection to the jet via Alfven waves.

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