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首页> 外文期刊>Geomagnetism and Aeronomy >New method for separating K- and F-corona brightness based on LASCO/SOHO data
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New method for separating K- and F-corona brightness based on LASCO/SOHO data

机译：基于LASCO / SOHO数据分离K和F电晕亮度的新方法

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摘要

A relatively simple (in technology) method for separating K- and F-corona brightness based on LASCO data, which makes it possible to obtain the latitude distribution of this brightness in the field of view of the LASCO C2 and C3 coronographs at any instant for which white light corona images are available, has been proposed. It has been estimated that the error in determining K-corona brightness varies from 20 to 50% at distances of R [less than or equal to] 6R^sub^ (R^sub ^ is the solar radius). At distances of R > (5-6)R^sub ^, the accuracy of the K-corona brightness determination decreases and is of an estimative character. Nevertheless, it is often possible to trace the brightest coronal rays and the K-corona regions of decreased brightness (including such regions in coronal holes) to distances of R [asymptotically =] 15R^sub ^ and 25-30R^sub ^ for some events. This makes it possible to estimate and compare electron densities in different coronal structures to large distances. Examples of method testing are presented. For the first time, we have managed to obtain continuous (in latitude) distributions of K- and F-corona brightness, using this method. [PUBLICATION ABSTRACT]
机译：一种相对简单的（技术上）基于LASCO数据分离K和F日冕亮度的方法，这使得可以在LASCO C2和C3冠冕仪的视场中随时获取该亮度的纬度分布，以用于已经提出了哪些白光电晕图像可用。已经估计出，在R的距离[小于或等于6R ^ sub ^（R ^ sub ^是太阳半径）的情况下，确定K-电晕亮度的误差在20％至50％之间变化。在R>（5-6）R ^ sub ^的距离处，K-电晕亮度确定的精度降低并且具有估计特性。尽管如此，对于某些情况，通常仍可能追踪最亮的日冕射线和亮度降低的K-日冕区域（包括日冕孔中的此类区域）到R的距离[渐近=] 15R ^ sub ^和25-30R ^ sub ^事件。这使得可以估计和比较远距离不同冠状结构中的电子密度。给出了方法测试的例子。我们首次使用这种方法设法获得了K和F日冕亮度的连续（纬度）分布。 [出版物摘要]

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