未解之谜 天文新探秘:太阳的北极

天文新探秘:太阳的北极

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新三才编译首发】随着冬季在北半球下降,就像许多晚餐客人一样,这是一个开始梦想温暖气候的好时机。今天,我们可以建议参观太阳的北极吗?(今天的太阳温度预测稍低,大约是华氏温度7,300度,或摄氏4,000度。)

即使有卫星镜头,我们对太阳的看法也非常局限于太阳圆盘——也就是我们可以从地球上看到的太阳圆形轮廓。我们最接近的恒星的北极和南极从未被直接观测到,但欧洲航天局的科学家习惯于使用一些巧妙的延时摄影来创建太阳北极的日常合成图像。这张是12月3日的图像,让您体验隐藏在太阳头顶的漩涡、汹涌的电浆海。

利用2009年发射来观测太阳和电浆气候的ESA Proba-2卫星的数据,科学家可以观察太阳的大气层边缘和太阳顶部北极的大气层。当太阳的表面在一整天内旋转并旋转,改变其上方的大气层时,卫星会拍摄额外的图像,这些图像可以相互组合,以创建太阳北极上不断变化的大气层延时图像。

欧洲航天局表示这还不是完整的图像,在该机构于2020年发射「太阳轨道号」任务之前,我们不会拥有任何一个完整太阳图片,但目前的图片已经确实能够很好地了解这颗最接近我们的恒星上所发生的事情。例如,如果你看一下昨天的图像,你可以看到一个黑色的漩涡在杆的中心周围冒出来。根据欧洲航天局的说法,这是一个日冕洞——太阳表面的一个薄区域,电浆比平时更冷,密度更小,更容易将太阳风吹入太空。

直接观察这些极点将使科学家更清楚地了解从这些冕洞喷出的粒子如何影响我们太阳系的其余部分,那些带电的太阳能粒子可能不会使地球上的冬天更温暖,但他们可能会让它变得更丰富多彩一些。

(编译:王明真)

(责任编辑:姜启明)

(文章来源:新三才编译首发)

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