Monte Carlo treatment of Lymanalpha. II. Radiation in a spherical atmosphere.
Abstract
Intensity and state of polarization of solar Lalpha photons as they diffuse through an inhomogeneous, spherically symmetric, isothermal geocorona are theoretically determined. The fine structure of Lalpha and Doppler redistribution of frequencies are taken into account. The calculation use the Monte Carlo technique involving Stokes vectors. Comparison of the results with OGO4 and OSO4 observed intensities at an altitude of 650 km shows good agreement. Calculations of the polarization versus solar zenith angle show a residual polarization at large zenith angles which is mainly due to multiply scattered photons.
 Publication:

The Astrophysical Journal
 Pub Date:
 July 1975
 DOI:
 10.1086/153719
 Bibcode:
 1975ApJ...199..530M
 Keywords:

 Atmospheric Models;
 Atmospheric Radiation;
 Lyman Alpha Radiation;
 Monte Carlo Method;
 Radiative Transfer;
 Solar Radiation;
 Computer Programs;
 Fine Structure;
 Luminous Intensity;
 Polarization Characteristics;
 Satellite Observation;
 Astrophysics