活跃太阳上的日珥和细丝
(原标题: Prominences and Filaments on the Active Sun)
2024-06-15
浏览次数: 12
这张彩色数码锐化的太阳图像是由5月15日太阳色球层氢原子发射的画面组成的。接近太阳活动周期的最大值时，大量的行星矮化活动区域和扭曲的、蛇形的太阳细丝被看到蔓延在活动太阳的表面。悬浮在活跃区域的强磁场中，等离子体的细丝被抛出太阳的边缘，形成明亮的日珥。在太阳边缘4点附近和9点之前看到的大日珥是当天发生的两个强大的x级太阳耀斑的后耀斑环。事实上，4点钟方向的日珥与在太阳边缘旋转的活跃区域AR 3664有关。
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This colorized and digitally sharpened image of the Sun is composed of frames recording emission from hydrogen atoms in the solar chromosphere on May 15. Approaching the maximum of solar cycle 25, a multitude of planet-dwarfing active regions and twisting, snake-like solar filaments are seen to sprawl across the surface of the active Sun. Suspended in the active regions' strong magnetic fields, the filaments of plasma lofted beyond the Sun's edge appear as bright solar prominences. The large prominences seen near 4 o'clock, and just before 9 o'clock around the solar limb are post flare loops from two powerful X-class solar flares that both occurred on that day. In fact, the 4 o'clock prominence is associated with the monster active region AR 3664 just rotating off the Sun's edge.
© solar cycle 25