太阳边缘的AR 3664

2024年5月15日

AR 3664 at the Sun’s Edge
Image Credit & Copyright: Sebastian Voltmer

Explanation: What did the monster active region that created the recent auroras look like when at the Sun’s edge? There, AR 3664 better showed its 3D structure. Pictured, a large multi-pronged solar prominence was captured extending from chaotic sunspot region AR 3664 out into space, just one example of the particle clouds ejected from this violent solar region. The Earth could easily fit under this long-extended prominence. The featured image was captured two days ago from this constantly changing region. Yesterday, the strongest solar flare in years was expelled (not shown), a blast classified in the upper X-class. Ultraviolet light from that flare quickly hit the Earth’s atmosphere and caused shortwave radio blackouts across both North and South America. Although now rotated to be facing slightly away from the Earth, particles from AR 3664 and subsequent coronal mass ejections (CMEs) might still follow curved magnetic field lines across the inner Solar System and create more Earthly auroras.

Gallery: Earth Aurora from Solar Active Region 6443

Tomorrow’s picture: open space

太阳边缘的AR 3664
影像提供与版权: Sebastian Voltmer

说明: 最近诱发极光的怪兽级活跃区，来到太阳边缘时会长什么模样？在那里，AR 3664可以更精采的展示它的三维结构。在这幅记录此不断变化区域2天前景观的主题影像里，一个多叉的大型日冕从混乱的太阳黑子区AR 3664向太空伸展，而这只是此剧烈太阳活跃区在喷发粒子云的例证之一。此外，地球可以轻易的纳在这个高高突起的日冕下方。昨天，它爆发了近年来最强烈的太阳闪焰/耀斑（未显示），其规模之分类为上X级。来自此闪焰的紫外光迅即冲击地球大气，并造成北及南美洲的短波无线电通讯中断。虽然AR 3664现在已经转向侧边稍微远离地球，但来自AR 3664的粒子和后续的日冕物质抛射（CMEs），仍有机会沿着穿透太阳系内围的弯曲磁场线移动，从而诱发更多的地球极光。