Raman spectroscopy of solar pmodes
Abstract
In the present paper we propose a new application of timedistance analysis. we show that timedistance measurements in helioseismic tomography ( Duvall, Jr. et al, 1993; 1997) can be used for estimate of the energy flux on the solar surface. Nonreciprocity of travel time along the ray path and different parity properties of sound speed, flow velocity and magnetic field, allow one to obtain the information on large scale distribution of plasma flows and magnetic fields (Ryutova and Scherrer, 1997). Here we extend our analysis and show that the covariance of sum and difference of the reciprocal travel times is a measure of largescale, "climatological" heat flux, and covariance of sum and difference of their departures from the mean, gives an estimate for the magnetic energy flux. Using the reciprocal travel times measured in NorthSouth and WestEast directions one can estimate the latitude and longitude dependent energy fluxes. The possibility of the estimating of the "eddy" fluxes, the heat and magnetic energy transport provided by small scale motions, is outlined. We give the examples of the estimated heat and magnetic energy flux using the data obtained from MDISOHO.
 Publication:

New Eyes to See Inside the Sun and Stars
 Pub Date:
 1998
 Bibcode:
 1998IAUS..185..213R