Plasma Condensation in Solar Coronal Loops -- I. Basic Processes

Details Plasma Condensation in Solar Coronal Loops -- I. Basic Processes Plasma Condensation in Solar Coronal Loops -- I. Basic Processes

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.547..285m&link_type=abstract

Proceedings of 'SOHO 13 - Waves, Oscillations and Small-Scale Transient Events in the Solar Atmosphere: A Joint View from SOHO a

Physics

Sun: Corona, Sun: Transition Region, Sun: Uv Radiation

Scientific paper

In the first part of this work, we report numerical calculations of the condensation of plasma in short coronal loops, which has several interesting physical consequences. We propose a connection between small, cool loops, which presumably constitute the solar transition region, and prominences in the sense that the same physical mechanism governs their dynamics, namely the onset of instability and runaway cooling due to strong radiative losses. We show that the temporal evolution of these loop models exhibits a cyclic pattern of chromospheric evaporation, condensation, motion of the condensation region to either side of the loop, and finally loop reheating with a period of 4000 - 8000 s for a loop of 10 Mm length. Furthermore, we have synthesized transition region lines from these calculations which show strong periodic intensity variations, making condensation in loops a candidate to account for observed transient brightenings of solar transition region lines. Remarkably, all these dynamic processes take place for a heating function which is constant in time and has a simple exponential height dependence. In the second part of this work (Müller et al., 2003b), we apply this concept to large coronal loops.

Affiliated with

Also associated with

No associations

Rating

Plasma Condensation in Solar Coronal Loops -- I. Basic Processes 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 Plasma Condensation in Solar Coronal Loops -- I. Basic Processes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasma Condensation in Solar Coronal Loops -- I. Basic Processes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1550354