Intermittent Coronal Loop Oscillations by Random Energy Releases

Details Intermittent Coronal Loop Oscillations by Random Energy Releases Intermittent Coronal Loop Oscillations by Random Energy Releases

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apj...648..722m&link_type=abstract

The Astrophysical Journal, Volume 648, Issue 1, pp. 722-731.

Astronomy and Astrophysics

Astronomy

13

Hydrodynamics, Methods: Numerical, Sun: Atmosphere, Sun: Corona, Sun: Oscillations

Scientific paper

High-resolution observations by the SOHO and TRACE spacecraft have confirmed the existence of coronal loop oscillations and waves. In a recent work, Mendoza-Briceño et al. studied the heating response of coronal plasma to energy pulses randomly distributed in time and space along coronal loops. In this paper we focus on the oscillatory patterns and other features, such as cool gas blobs traveling along the loop, during the evolution of spatiotemporal randomly heated flux tubes in the corona. The nature of these oscillatory patterns is investigated using wavelet analysis. Periodic features, such as wave packets, with periods of 150-220, 500-600, and 800-1000 s are found. It is also found that the periods increase with the loop length and decrease with the length of the loop segments along which the pulses are injected. On the other hand, the randomly driven intermittent cool plasma blobs that propagate from one footpoint to the other are analyzed. Although plenty of coronal loop oscillations are detected by the cohort of the current high-resolution satellites, there are more controversial observational evidences about the predicted cold plasma blobs.

Affiliated with

Also associated with

No associations

Rating

Intermittent Coronal Loop Oscillations by Random Energy Releases 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 Intermittent Coronal Loop Oscillations by Random Energy Releases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intermittent Coronal Loop Oscillations by Random Energy Releases will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-995410