8-13 September 2013
Asilomar, California
US/Pacific timezone

Light milli-charged dark matter and the origin of large scale cosmic fields.

10 Sep 2013, 15:20
20m
Asilomar, California

Asilomar, California

Asilomar Conference Grounds, 800 Asilomar Avenue, Pacific Grove, CA 93950-3704
Oral Cosmology Cosmology II

Speaker

A.D. Dolgov (INFN, Ferrara)

Description

A mechanism for generation of large scale magnetic fields at recombination epoch is considered. Due to rotation of a protogalaxy a circular electric current can be generated because of interaction of galactic electrons with hypothetical light dark matter particles possessing a small electric charge. The induced current may be sufficiently strong to create the observed magnetic field at galactic and intergalactic scales without much dynamo amplification. Additionally, angular momentum transfer from the rotating gas to dark matter could change the dark matter profile and suppress formation of cusps at galactic centers.

Primary author

A.D. Dolgov (INFN, Ferrara)

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