Lower solar chromosphere-corona transition region. III - Implications of the observed quiet-sun emission measure including wave pressure effects

Details Lower solar chromosphere-corona transition region. III - Implications of the observed quiet-sun emission measure including wave pressure effects Lower solar chromosphere-corona transition region. III - Implications of the observed quiet-sun emission measure including wave pressure effects

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...355..309w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 355, May 20, 1990, p. 309-320.

Computer Science

Sound

7

Chromosphere, Magnetohydrodynamic Waves, Solar Atmosphere, Solar Corona, Acoustic Velocity, Magnetic Flux, Radiative Transfer, Solar Activity Effects

Scientific paper

The observed form of the emission measure (EM) is used as a function of temperature to infer the wave energy flux density and pressure throughout the lower transition region (TR). This procedure eliminates the need for specifying how the wave energy flux density is damped and addresses the question of whether there is any form of the mechanical heating associated with the degradation of an upward traveling wave energy flux density which is consistent with the observed EM and other observational constraints for the quiet sun. It is found that the observed form of the EM curve is incompatible with waves traveling vertically at the sound speed, regardless of any filling factor arguments. The same conclusion also applies to waves traveling at the Alfven speed, unless it is assumed that the emission in lower TR lines originates solely from small, spatially unresolved regions of large magnetic field strength (100 G), which cover a small fraction (filling factors of 1 percent) of the solar surface.

Affiliated with

Also associated with

No associations

Rating

Lower solar chromosphere-corona transition region. III - Implications of the observed quiet-sun emission measure including wave pressure effects 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 Lower solar chromosphere-corona transition region. III - Implications of the observed quiet-sun emission measure including wave pressure effects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lower solar chromosphere-corona transition region. III - Implications of the observed quiet-sun emission measure including wave pressure effects will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-779834