Improving the signal-to-noise ratio in solar oscillation spectra

被引：0
|
作者：
Garcia, RA [1 ]
Jefferies, CM
Toner, CG
Pallé, PL
机构：
[1] Ctr Etud Saclay, DAPNIA, DSM, CEA,Serv Astrophys, F-91191 Gif Sur Yvette, France
[2] Natl Opt Astron Observ, Natl Solar Observ, Tucson, AZ 85726 USA
[3] Inst Astrofis Canarias, E-38205 Tenerife, Spain
来源：
ASTRONOMY & ASTROPHYSICS | 1999年 / 346卷 / 03期
关键词：
Sun : oscillations; methods : data analysis;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We describe a data analysis technique for helioseismology that provides a reduction in the contamination of the solar oscillation spectrum from incoherent noise. We show that the technique allows: (i) a significant improvement in the signal-to-noise ratio for the modes in the oscillation power spectrum, and (ii) the solar velocity background spectrum to be observed at low frequencies using ground-based observations.
引用
收藏
页码：L61 / L64
页数：4
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