Numerical Simulations of Penetration and Overshoot in the Sun

Details Numerical Simulations of Penetration and Overshoot in the Sun Numerical Simulations of Penetration and Overshoot in the Sun

2006-01-30

arxiv.org/abs/astro-ph/0601668v1

Astrophys.J.653:765-773,2006

Astronomy and Astrophysics

Astrophysics

24 pages, 8 figures, submitted to ApJ

Scientific paper

10.1086/508482

We present numerical simulations of convective overshoot in a two-dimensional model of the solar equatorial plane. The simulated domain extends from 0.001 R_sun to 0.93 R_sun, spanning both convective and radiative regions. We show that convective penetration leads to a slightly extended, mildly subadiabatic temperature gradient beneath the convection zone below which there is a rapid transition to a strongly subadiabatic region. A slightly higher temperature is maintained in the overshoot region by adiabatic heating from overshooting plumes. This enhanced temperature may partially account for the sound speed discrepancy between the standard solar model and helioseismology. Simulations conducted with tracer particles suggest that a fully mixed region exists down to at least 0.687 R_sun.

Affiliated with

Also associated with

No associations

Rating

Numerical Simulations of Penetration and Overshoot in the Sun 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 Numerical Simulations of Penetration and Overshoot in the Sun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Numerical Simulations of Penetration and Overshoot in the Sun will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-13875