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

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

Publishing date

2010-07-27

URL

arxiv.org/abs/1007.4726v1

Journals

MNRAS, vol. 408, pp. 1835-1839 (2010)

Science

Astronomy and Astrophysics

Field

Astrophysics

SubField

Solar and Stellar Astrophysics

Additional info

To appear in MNRAS (2010)

Type

Scientific paper

Abstract

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.

Affiliated with

Also associated with

No associations

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

Comments { 0 }

Profile ID: LFWR-SCP-O-321142