Cosmic ray driven dynamo in galactic disks

Details Cosmic ray driven dynamo in galactic disks Cosmic ray driven dynamo in galactic disks

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005mpge.conf..162h&link_type=abstract

The Magnetized Plasma in Galaxy Evolution, Proceedings of the conference held in Kraków, Poland, Sept. 27th - Oct. 1st, 2004, Ed

Other

3

Scientific paper

We present the first numerical model of the magnetohydrodynamical dynamo, driven by cosmic rays in the interstellar medium. The cosmic rays are produced in randomly occurring supernova remnants. Our model is described by equations of magnetohydrodynamics supplemented with the diffusion-advectionequation governing the propagation of cosmic rays. The other essential elements of the model are: vertical gravity of the disk, differential rotation and resistivity leading to reconnection of magnetic field lines. We obtain amplification of the large-scale magnetic field on a timescale of galactic rotation. The model represents a kind of fast, cosmic ray driven galactic dynamo proposed by Parker (1992). The amplification of the large-scale magnetic field results from the buoyancy of the cosmic ray component in the interstellar medium.

Affiliated with

Also associated with

No associations

Rating

Cosmic ray driven dynamo in galactic disks 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 Cosmic ray driven dynamo in galactic disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmic ray driven dynamo in galactic disks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1421165