Nine Years Of Euv Bright Points |
| |
Authors: | Scott W McIntosh Joseph B Gurman |
| |
Institution: | (1) Department of Space Studies, Southwest Research Institute, 1050 Walnut Street, Suite 400, Boulder, CO 80302, USA;(2) Laboratory for Solar and Space Physics, NASA Goddard Space Flight Center, Code 612.1, Greenbelt, MD 20771, USA |
| |
Abstract: | We discuss early results derived from an algorithm that automates the detection, cataloging, and analysis of extreme-ultraviolet
(EUV) “bright points” (BP) from 9 years of data acquired by the Extreme-ultraviolet Imaging Telescope (EIT) on the Solar and
Heliospheric Observatory (SOHO). The algorithm relies upon the computation of a map of “intensity significance”; this then
contains the location of the EUV BPs. By mapping the location of BPs in each image and linking them through long sequences
of EIT images we can describe the temporal and spatial variations of the 1.3× 108 EUV BPs observed by SOHO to date. We suggest that there is a considerable amount of physical information about the solar
coronal plasma that can be readily gleamed from the BP detection database. In this paper we discuss only a small portion of
the possible correlations, but we point to the possibility of BP lifetime distributions that are well described by modified
power-laws; the components of which vary with the different temperature filters and with time over the present solar cycle.
Dedicated to the memory of John (Ian) Hamilton (1938–2004). |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|