Cosmic-ray driven dynamo in galactic disks

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

2008-12-31

arxiv.org/abs/0901.0111v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

6 pages, 3 figures, To be published in "Cosmic Magnetic Fields: From Planets, to Stars and Galaxies", K.G. Strassmeier, A.G. K

Scientific paper

10.1017/S1743921309031147

We present new developments on the Cosmic--Ray driven, galactic dynamo, modeled by means of direct, resistive CR--MHD simulations, performed with ZEUS and PIERNIK codes. The dynamo action, leading to the amplification of large--scale galactic magnetic fields on galactic rotation timescales, appears as a result of galactic differential rotation, buoyancy of the cosmic ray component and resistive dissipation of small--scale turbulent magnetic fields. Our new results include demonstration of the global--galactic dynamo action driven by Cosmic Rays supplied in supernova remnants. An essential outcome of the new series of global galactic dynamo models is the equipartition of the gas turbulent energy with magnetic field energy and cosmic ray energy, in saturated states of the dynamo on large galactic scales.

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-536938