Centrifugally driven MHD-winds in active galactic nuclei

Details Centrifugally driven MHD-winds in active galactic nuclei Centrifugally driven MHD-winds in active galactic nuclei

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...156..137c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 156, no. 1-2, Feb. 1986, p. 137-151. SNSF-supported research.

Astronomy and Astrophysics

Astrophysics

126

Active Galactic Nuclei, Interstellar Magnetic Fields, Magnetohydrodynamic Flow, Quasars, Relativistic Plasmas, X Ray Sources, Astronomical Models, Centrifugal Force, Emission Spectra, Energy Transfer, Gravitational Collapse, Nonthermal Radiation, Rotating Bodies

Scientific paper

When the prime mover in quasars is a supermassive magnetized and rapidly rotating object, the centrifugal instability can drive strong MHD-winds away from the equatorial region and extract angular momentum and rotational energy from the central object. The author shows that the necessary magnetic fields are produced, when this central object has been formed from the central part of a galactic disc. The position of the light cylinder for these objects requires a relativistic description for the corresponding MHD-winds. The author discusses the relevant equations for any stationary and axisymmetric spacetime and derives explicitly the position of the Alfvén point in the flow. He finds that centrifugally driven winds from supermassive objects carry a Poynting flux comparable with the kinetic energy flux. In addition, the magnetic field structure in the open wind zone requires the existence of a global current topology, which might explain the necessary magnetic collimation for escaping jet material. As a result, centrifugally driven winds from rapidly rotating supermassive objects carry the energy necessary to power the non-thermal emission of BLR AGNs and the material required to fuel the broad emission line clouds and the thermal jets.

Affiliated with

Also associated with

No associations

Rating

Centrifugally driven MHD-winds in active galactic nuclei does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Centrifugally driven MHD-winds in active galactic nuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Centrifugally driven MHD-winds in active galactic nuclei will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1673792