About a mechanism of the short period 160-min radial pulsations of Sun

TL;DR

This paper investigates the 160-minute radial pulsations of the Sun, proposing a mechanism involving surface-originating waves that reflect internally to produce observed oscillations.

Contribution

It introduces a theoretical model explaining the Sun's 160-minute pulsations through harmonic oscillations and wave reflections within solar layers.

Findings

Radial pulsations originate at the active zone surface.

Waves reflect internally, creating stationary waves with 150-160 min period.

The model aligns with observed solar oscillation periodicity.

Abstract

The visible diameter of Sun oscilates with a period of 160 min. The same type of periodicity is also found in a huge number of solar radiation parameters. To elucidate the origin of these longitudinal radial pulsations we have used the equation for the equilibrium of inner layers which, after linearization, turned into the harmonic oscilator equation. The latter equation allows radial pulsations whose period and wave length were calculated using regresion expresions for the gas presure and density in various layers. The radial pulsations originate at the surface of active zone and propagate til the litosphere, where they undergo full inner reflection producing undersurface stationary waves with a period of 150-160 min.