期刊
ASTRONOMY & ASTROPHYSICS
卷 659, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/202141414
关键词
Sun; corona; solar wind
资金
- ASI
- INAF [I-013-12-0/1]
- Centre National d'Etudes Spatiales (CNES)
In this study, a new correlation method is proposed to derive the F-corona intensity distribution, which is validated through experiments. The method provides a smoother reconstruction of F-corona images and can be applied to future high-cadence VL observations.
We present a new correlation method for deriving the F-corona intensity distribution, which is based on the analysis of the evolution of the total and polarized visible light (VL) images. We studied the one-month variation profiles of the total and polarized brightness acquired with Large Angle Spectrometric COronagraph and found that in some regions they are highly correlated. Assuming that the F-corona does not vary significantly on a timescale of one month, we estimated its intensity in the high-correlation regions and reconstructed the corresponding intensity maps both during the solar-minimum and solar-maximum periods. Systematic uncertainties were estimated by performing dedicated simulations. We compared the resulting F-corona images with those determined using the inversion technique and found that the correlation method provides a smoother intensity distribution. We also obtained that the F-corona images calculated for consecutive months show no significant variation. Finally, we note that this method can be applied to the future high-cadence VL observations carried out with the Metis/Solar Orbiter coronagraph.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据