The Central Magnetic Field of the Cigar Galaxy


  2019-03-11 丨天文·每日一图 丨 nasachina  丨 暂无 丨 57

当前位置: Home » 天文·每日一图 » The Central Magnetic Field of the Cigar Galaxy

2019 March 11

The Central Magnetic Field of the Cigar Galaxy
Image Credit:
NASA, SOFIA, E. Lopez-Rodriguez; NASA, Spitzer, J. Moustakas et al.

Explanation: Are galaxies giant magnets? Yes, but the magnetic fields in galaxies are typically much weaker than on Earth's surface, as well as more complex and harder to measure. Recently, though, the HAWC+ instrument onboard the airborne (747) SOFIA observatory has been successful in detailing distant magnetic fields by observing infrared light polarized by reflection from dust grains. Featured here, HAWC+ observations of the M82, the Cigar galaxy, show that the central magnetic field is perpendicular to the disk and parallel to the strong supergalactic wind. This observation bolsters the hypothesis that M82's central magnetic field helps its wind transport the mass of millions of stars out from the central star-burst region. The featured image shows magnetic field lines superposed on top of an optical light (gray) and hydrogen gas (red) image from Kitt Peak National Observatory, further combined with infrared images (yellow) from SOFIA and the Spitzer Space Telescope. The Cigar Galaxy is about 12 million light years distant and visible with binoculars towards the constellation of the Great Bear.

声明:NASA中文|版权所有,违者必究|如未注明,均为原创|本网站采用BY-NC-SA协议进行授权

转载:转载请注明原文链接 - The Central Magnetic Field of the Cigar Galaxy


保护地球,探索宇宙,发现文明