Theoretical Properties of the Omega -Loops in the Convection Zone of the Sun. IV. Stability of Updrafts

Details Theoretical Properties of the Omega -Loops in the Convection Zone of the Sun. IV. Stability of Updrafts Theoretical Properties of the Omega -Loops in the Convection Zone of the Sun. IV. Stability of Updrafts

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...448..942p&link_type=abstract

Astrophysical Journal v.448, p.942

Astronomy and Astrophysics

Astronomy

2

Convection, Instabilities, Sun: Interior

Scientific paper

This paper treats the Kelvin-Helmholtz instability of a two-dimensional stream of fluid simulating the convective updraft described in the two previous papers. It appears that the instability is strong enough by itself to dismember at least the upper end of a columnar updraft extending up from the bottom of the convective zone. On the other hand, the tension in the vertical legs of accumulated Ω-loops may suppress the instability in the upper portion of the updraft if the magnetic field is in an intense fibril state. The eddy viscosity of the ambient convection may be as large as 1013 cm2 s-1, in which case it too may stabilize the updraft to some degree. In conclusion, it appears that the updraft may be sufficiently stable to be recognizable as a coherent dynamical form, thereby fulfilling the observational requirement that the Ω-loops emerge through a localized (and only slowly shifting) site at the visible surface. The coherence over the height of the convective zone is the basis for the conjecture that the updraft, created by successive emerging Ω-loops, is the principal cause of the enhancement of solar irradiance during periods of high solar activity.

Affiliated with

Also associated with

No associations

Rating

Theoretical Properties of the Omega -Loops in the Convection Zone of the Sun. IV. Stability of Updrafts 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 Theoretical Properties of the Omega -Loops in the Convection Zone of the Sun. IV. Stability of Updrafts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theoretical Properties of the Omega -Loops in the Convection Zone of the Sun. IV. Stability of Updrafts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1269014