Phase velocities of gravity waves in the solar photosphere

被引：0

作者：

Stodilka, M. I. ^{[1
]}

机构：

[1] Ivan Franko Natl Univ Lviv, Astron Observ, UA-79005 Lvov, Ukraine

来源：

KINEMATICS AND PHYSICS OF CELESTIAL BODIES | 2013年 / 29卷 / 04期

关键词：

HIGH-SPATIAL-RESOLUTION; ACOUSTIC-WAVES; ATMOSPHERE; CHROMOSPHERE; CONVECTION; DYNAMICS; LINE; PROPAGATION; SIMULATIONS; GENERATION;

D O I：

10.3103/S0884591313040053

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Space-time variations of pressure in the solar photosphere are reproduced based on the results of observations in the Fe I line. Local internal gravity waves (IGWs) are isolated by means of proper filtering. A method of determination of the phase velocities of IGWs based on 1D observations is developed. Horizontal and vertical projections of the phase velocities of isolated IGWs with different periods are determined. It is shown that the phase velocity of an IGW decreases significantly with a decrease in oscillation frequency. The horizontal wavelengths of gravity waves with periods ranging from 5 to 60 minutes are commensurable with the granulation scales. The dispersive properties of gravity waves are studied.

引用

页码：157 / 166

页数：10

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