학술논문

Solar p-mode phenomenology
Document Type
Journal Article
Author
Source
Astrophys. J.; (United States); 334
Subject
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS SUN
OSCILLATION MODES
AMPLITUDES
CHROMOSPHERE
DAMPING
HEATING
LINE WIDTHS
ROTATION
SOLAR ATMOSPHERE
ATMOSPHERES
MAIN SEQUENCE STARS
MOTION
STARS 640104* -- Astrophysics & Cosmology-- Solar Phenomena
Language
English
Abstract
New observations of solar p-mode amplitudes and line widths are presented, along with a phenomenological discussion of the excitation and damping of the modes. A surprising amount of structure is seen in the measured mode line widths as a function of frequency, which at present is unexplained. It is shown that the energy flux required to keep the p-modes excited to their observed amplitudes is of the same order of magnitude as the nonthermal energy flux required to heat the chromosphere. Thus it is not inconceivable that acoustic modes play some role in heating the solar atmosphere. 10 references.