Solar wind induced magnetic field around the unmagnetized Earth

Details Solar wind induced magnetic field around the unmagnetized Earth Solar wind induced magnetic field around the unmagnetized Earth

2004-04-29

arxiv.org/abs/astro-ph/0404580v1

Astron.Astrophys. 420 (2004) L15-L18

Astronomy and Astrophysics

Astrophysics

4pages, accepted

Scientific paper

10.1051/0004-6361:20040154

The Earth is a planet with a dipolar magnetic field which is agitated by a magnetized plasma wind streaming from the Sun. The magnetic field shields the Earth's surface from penetrating high energy solar wind particles, as well as interstellar cosmic rays. The magnetic dipole has reversed sign some hundreds of times over the last 400 million years. These polarity reversals correspond to drastic breakdowns of the dynamo action. The question arises what the consequences for the Earth's atmosphere, climate, and, in particular, biosphere are. It is shown by kinematic estimates and three-dimensional plasma-neutral gas simulations that the solar wind can induce very fast a magnetic field in the previously completely unmagnetized Earth's ionosphere that is strong enough to protect Earth from cosmic radiations comparable to the case of an intact magnetic dynamo.

Affiliated with

Also associated with

No associations

Rating

Solar wind induced magnetic field around the unmagnetized Earth 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 Solar wind induced magnetic field around the unmagnetized Earth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar wind induced magnetic field around the unmagnetized Earth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-567346