Drift waves in the corona: heating and acceleration of ions at frequencies far below the gyro frequency

Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

To appear in MNRAS (2010)

Scientific paper

In the solar corona, several mechanisms of the drift wave instability can make the mode growing up to amplitudes at which particle acceleration and stochastic heating by the drift wave take place. The stochastic heating, well known from laboratory plasma physics where it has been confirmed in numerous experiments, has been completely ignored in past studies of coronal heating. However, in the present study and in our very recent works it has been shown that the inhomogeneous coronal plasma is, in fact, a perfect environment for fast growing drift waves. As a matter of fact, the large growth rates are typically of the same order as the plasma frequency. The consequent heating rates may exceed the required values for a sustained coronal heating by several orders of magnitude. Some aspects of these phenomena are investigated here. In particular the analysis of the particle dynamics within the growing wave is compared with the corresponding fluid analysis. While both of them predict the stochastic heating, the threshold for the heating obtained from the single particle analysis is higher. The explanation for this effect is given.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Drift waves in the corona: heating and acceleration of ions at frequencies far below the gyro frequency 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 Drift waves in the corona: heating and acceleration of ions at frequencies far below the gyro frequency, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drift waves in the corona: heating and acceleration of ions at frequencies far below the gyro frequency will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-321142

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.