太阳灯丝爆发
(原标题: A Solar Filament Erupts)
2024-05-26
浏览次数: 16
我们的太阳发生了什么？没什么特别的——它只是抛出了一根灯丝。2012年年中，一个长期存在的太阳灯丝突然向太空喷发，产生了一次高能日冕物质抛射（CME）。由于太阳不断变化的磁场，这些灯丝已经被阻挡了好几天，而喷发的时间是出乎意料的。在绕太阳运行的太阳动力学观测站的密切观察下，由此产生的爆炸将电子和离子射入太阳系，其中一些在三天后到达地球，并影响了地球的磁层，造成了可见的极光。在这张特殊的紫外图像中，可以看到围绕在活跃区域周围的等离子体环。我们的太阳正接近其11年周期中最活跃的时期，创造了许多日冕洞，使带电粒子能够喷射到太空中。和以前一样，这些带电粒子可以产生极光。你的天空惊喜：APOD在你的生日上展示了什么照片？(1995后)
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What's happened to our Sun? Nothing very unusual -- it just threw a filament. Toward the middle of 2012, a long standing solar filament suddenly erupted into space, producing an energetic coronal mass ejection (CME). The filament had been held up for days by the Sun's ever changing magnetic field and the timing of the eruption was unexpected. Watched closely by the Sun-orbiting Solar Dynamics Observatory, the resulting explosion shot electrons and ions into the Solar System, some of which arrived at Earth three days later and impacted Earth's magnetosphere, causing visible auroras. Loops of plasma surrounding the active region can be seen above the erupting filament in the featured ultraviolet image. Our Sun is nearing the most active time in its 11-year cycle, creating many coronal holes that allow for the ejection of charged particles into space. As before, these charged particles can create auroras. Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)