Date: 3 months ago   Category: Cosmos

The mysterious phenomenon in the Sun is noticed


Astronomers from Ohio State University in the city of Columbus have found out that the Sun lets out a large number of high-energy gamma beams, and it occurs in the period of the minimum activity of a star. According to scientists, it is somehow connected with magnetic fields, however the exact mechanism remains to unknown so far. The Science News edition reports about it. High-energy gamma beams aren't created by the Sun directly, and result from interaction of space beams with protons as a part of solar substance. Usually gamma radiation is absorbed by a star, however presence of strong magnetic fields changes trajectories of space beams, and high-energy photons are let out in external space. Researchers have analysed the data obtained during 10 years' observations (from August, 2008 to November, 2017) made by means of space observatory of NASA Fermi Gamma-ray Space Telescope. The period of low solar activity has fallen on the period of 2008-2009, and high — for 2013. Scientists have estimated the number of events of emission of gamma radiation and also energy of photons, depending on activity of the Sun. Researchers have found out that the Sun lets out more gamma beams with energy of 50 billion electronvolts (50 GEV), than was predicted. Moreover, beams have been registered by energy of 100 GEV, at the same time they arose at low solar activity. So, one of photons had energy of 467,7 GEV. Besides, as the Sun is bombarded by space beams from all directions, it was necessary to expect that gamma photons are radiated by a star evenly, however during an activity minimum power photons were let out by the equator, and during a maximum — mainly poles. According to astronomers, it indicates unusual behavior of magnetic fields of the Sun. Attempts to connect surplus of gamma beams with solar flashes and spots weren't crowned with success yet. Scientists plan to continue researches and to measure forces of magnetic fields by means of the probe Parker Solar Probe which has been started on August 12, 2018. It is more than important news in Film of Day Telegram-channel. Subscribe!

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