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日益活跃的太阳

(原标题: Our Increasingly Active Sun)

2023-02-22

浏览次数: 13

我们的太阳正在变成一个繁忙的地方。就在两年前,太阳刚刚从太阳极小期出来,非常平静,几个月过去了,甚至没有一个太阳黑子。相比之下,我们的太阳在今年已经异常活跃,而且比预期的要早得多,已经接近十年前最后一次太阳活动高峰期的太阳活动水平。我们日益活跃的太阳在两周前被捕捉到,呈现出许多有趣的特征。这张照片是用一种叫做氢α的单色光记录的,颜色反转,是假色。针状体覆盖了太阳的大部分表面。太阳边缘的变亮是由相对较冷的太阳气体吸收增加引起的,被称为“边缘变暗”。就在太阳的圆盘外,几个闪烁的日珥突出,而太阳表面的日珥被称为细丝,并显示为光条。磁场纠缠的活跃区域既暗又亮,并且包含冷太阳黑子。随着我们的太阳磁场在未来几年内走向太阳活动最大值,太阳的高活动是否会继续增加还不得而知。

查看原文解释

Our Sun is becoming a busy place. Only two years ago, the Sun was emerging from a solar minimum so quiet that months would go by without even a single sunspot. In contrast, already this year and well ahead of schedule, our Sun is unusually active, already nearing solar activity levels seen a decade ago during the last solar maximum. Our increasingly active Sun was captured two weeks ago sporting numerous interesting features. The image was recorded in a single color of light called Hydrogen Alpha, color-inverted, and false colored. Spicules carpet much of the Sun's face. The brightening towards the Sun's edges is caused by increased absorption of relatively cool solar gas and called limb darkening. Just outside the Sun's disk, several scintillating prominences protrude, while prominences on the Sun's face are known as filaments and show as light streaks. Magnetically tangled active regions are both dark and light and contain cool sunspots. As our Sun's magnetic field winds toward solar maximum over the next few years, whether the Sun's high activity will continue to increase is unknown.

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