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Extremely Energetic 4B/X17.2 Flare and Associated Phenomena
Sun: Flares coronal mass ejections reconnection
2010/9/16
We observed 4B/X17.2 flare in Hα from super-active region NOAA 10486 at ARIES, Nainital. This is one of the largest flares of current solar cycle 23, which occurred near the Sun’s center and produced ...
PN g135.9+55.9：a new, extremely oxygen-poor planetary nebula in the galactic halo
oxygen-poor planetary nebula galactic halo
2009/6/11
PN g135.9+55.9：a new, extremely oxygen-poor planetary nebula in the galactic halo。
Extremely Energetic 4B/X17.2 Flare and Associated Phenomena
Sun:Flares coronal mass ejections reconnection
2009/5/7
We observed 4B/X17.2 flare in Ha from super-active region NOAA 10486 at ARIES, Nainital. This is one of the largest flares of current solar cycle 23, which occurred near the Sun'™s center and pr...