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The UV Upturn in Elliptical galaxies and Environmental Effects
Elliptical galaxies Environmental Effects
2011/9/26
It is suspected that the ultraviolet (UV) upturn phenomenon in elliptical galaxies and extended horizontal-branch stars in globular clusters have a common origin. An extremely high abundance of helium...
Transient Perturbations and their Effects in the Heliosphere, the Geomagnetosphere, and the Earth’s Atmosphere：Space Weather Perspective
Space weather geomagnetic storm cosmic ray Forbush decrease interplanetary shock coronal mass ejection
2009/5/7
We discuss the effects of certain dynamic features of space environment in the heliosphere, the geo-magnetosphere, and the earth™s atmosphere. In particular, transient perturbations in solar win...