Astronomy Picture of the Day——“磁”猎户
Magnetic Orion
Image Credit & Copyright: NASA, SOFIA,D. Chuss et al. & ESO, M. McCaughrean
Explanation: Can magnetism affect how starsform? Recent analysis of Orion data from the HAWC+ instrument on the airborneSOFIA observatory indicate that, at times, it can. HAWC+ is able to measure thepolarization of far-infrared light which can reveal the alignment of dustgrains by expansive ambient magnetic fields. In the featured image, thesemagnetic fields are shown as curvy lines superposed on an infrared image of theOrion Nebula taken by a Very Large Telescope in Chile. Orion's Kleinmann-LowNebula is visible slightly to the upper right of the image center, while brightstars of the Trapezium cluster are visible just to the lower left of center.The Orion Nebula at about l300 light years distant is the nearest major starformation region to the Sun.
“磁”猎户
磁场能够影响恒星的形成吗？最近通过来自索菲亚平流层红外天文台上HAWC+设备对猎户座数据进行的分析表明，它有时会对恒星的形成有一定影响。HAWC+能够测量远红外光的偏振，还能透过广阔的环境磁场显示出尘埃颗粒的排列。在这幅图像中，磁场用曲线表示，叠加在一幅智利望远镜所拍摄的猎户星云红外影像之上。猎户座的克莱因曼-洛星云在影像中心右上角略微可见，而影像中心的左下方可以看到猎户的四边形星团。猎户星云距离地球约1300光年，是距离太阳最近的主要恒星形成区。
参考文献：
https://apod.nasa.gov/apod/image/1902/MagneticOrion_EsoSofia_1833.jpg
近期文章：
Astronomy Picture of the Day——月面撞击