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http://www.ras.org.uk/news-and-press/224-news-2013/2313-solar-dynamic-loops-reveal-a-simultaneous-explosion-and-implosion-plus-evidence-for-magnetic-reconnection: Solar dynamic loops reveal a simultaneous explosion and implosion, plus evidence for magnetic reconnection
Royal Astronomical Society

Direct link Solar dynamic loops reveal a simultaneous explosion and implosion, plus evidence for magnetic reconnection

2 Jul 2013, 11:36 UTC Movies of giant loops projecting from the surface of the Sun are giving new insights into the complex mechanisms that drive solar flares and Coronal Mass Ejections (CMEs). These eruptions release vast energy and electrically charged particles that can affect the Earth through space weather. Imagery from NASA's Solar Dynamics Observatory (SDO), used in two separate studies, shows the dynamics of loops before, during and after eruptions. Results have been presented at the National Astronomy Meeting in St Andrews. Image from NASA’s Solar Dynamic Observatory (SDO) at 17.7 nanometres showing the flaring active region on 9 March 2012. The coronal loops that contract during the flare are indicated by the labels L1 to L4, outer to inner. Credit: NASA/SDO/University of Glasgow. The full video is available from http://www.astro.gla.ac.uk/users/paulo/implosion.avi (http://www.astro.gla.ac.uk/users/paulo/implosion.avi)Coronal loops are giant magnetic arches filled with hot plasma at temperatures of over a million degrees Celsius. The structures are anchored in the dense photosphere, the visible surface of the Sun. The loops form the building blocks of the corona, the halo surrounding the Sun that can be seen during a total eclipse. They are dynamic structures that oscillate back and forth after explosive events such as solar flares. Researchers from ...

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