Monte Carlo treatment of Lyman-alpha. II - Radiation in a spherical atmosphere

Details Monte Carlo treatment of Lyman-alpha. II - Radiation in a spherical atmosphere Monte Carlo treatment of Lyman-alpha. II - Radiation in a spherical atmosphere

Jul 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...199..530m&link_type=abstract

Astrophysical Journal, vol. 199, July 15, 1975, pt. 1, p. 530-534.

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4

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

Scientific paper

Intensity and state of polarization of solar L-alpha photons as they diffuse through an inhomogeneous, spherically symmetric, isothermal geocorona are theoretically determined. The fine structure of L-alpha and Doppler redistribution of frequencies are taken into account. The calculation use the Monte Carlo technique involving Stokes vectors. Comparison of the results with OGO-4 and OSO-4 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.

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