TITLE:
Transport in Astrophysics: V. On the Red Sun at Horizon
AUTHORS:
Lorenzo Zaninetti
KEYWORDS:
Solar System, General, Earth
JOURNAL NAME:
International Journal of Astronomy and Astrophysics,
Vol.13 No.4,
December
25,
2023
ABSTRACT: In order to simulate the red sun at the horizon we need to evaluate the average density of matter along a line of sight characterized by a given elevation angle. The decrease in frequency or the increase in wavelength of the light is modeled by the Bouguer-Beer-Lambert law and as a consequence, all the Planck spectrum is shifted toward lower frequencies or longer wavelengths.