Editing Structure of the Sun

Questions in this category have been asked by MT, PJ, DC, EB, SR

*Where are the convection & radiative zones?
**What causes the transition?
**How does opacity vary throughout the convective layer?
**What causes the opacity?
**How does the picture change for a 5 Solar Mass Star?
**What about at 0.2 Solar Mass Star? Why?
*Does the Sun rotate & how do we know?
**Where does it rotate fastest?
**Is it solid body rotation?
**How has this been confirmed experimentally?

*What will happen to the sun after it leaves the main sequence? (PJ)
**How does the energy released in this phase compare with the energy released during the main sequence?
**Draw the rest of the evolutionary track for the sun and describe the physics of all the phases.

*What are the line-broadening mechanisms and where do they occur?
*What is the surface temp. of the sun? What is the core temp?

*What is the level of variability of the sun? How does this compare to the variability of other stars?

Neutrinos

* What is the energy produced for the reaction involving neutrino?
** What are the experiments to detect the neutrinos and the reactions involve.
* What is our current best estimate of the neutrino mass, and how is it obtained?
* How was SN1987A used to place a limit on the neutrino mass?  What was this limit?

Nuclear Burning

*Write down PPI.  Which is the slowest step, and what is its lifetime?
*If the nuclear burning in the sun turned off instantaneously, when would we know? (SR)



[[Astrophysics]]