Thursday, December 3, 2015

Sun can generate superflare able to kill life on Earth – RIA Novosti

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coronal hole on the sun in a picture with the probe STEREO

© Photo: NASA / STEREO / NRL

MOSCOW, December 3 – RIA Novosti. Observations of the sunlike star KIC 9655129 in the constellation Cygnus showed that the surface of these “twin Sun” there may be a powerful flash, whose power is a thousand times greater than the current record, and that could easily destroy all the satellites and kill all life on Earth, astronomers said in an article in the Astrophysical Journal Letters.

On the Sun periodically outbreaks – episodes of explosive energy release in the form of visible light, heat and X-rays. Powerful flash disrupt radio communications, satellites, and endanger the health of astronauts working on the ISS or in orbit.

It is believed that the most powerful outbreak occurred in 1859 during the so-called “Carrington Event”. During this powerful flash yottodzhouley it was allocated about 10 (10 to 25 degrees) of energy, which is 20 times more energy released during the fall of a meteorite that destroyed the dinosaurs and marine reptiles.

In May 2012, planetary scientists, working with the telescope, “Kepler” found a few hundred stars of class G, which owns the Sun, on the surface at least once or several times occurred outbreak, exceeding its capacity ” Carrington event, “a few million times. This led them to believe that the Sun can generate such disasters.

Further evidence of the possible existence of such outbreaks were found Chloe Pugh (Chloe Pugh) from the University of Warwick (UK) and her colleagues, to observe the double star KIC 9655129 using the “Kepler”.

Scientists interested in the so-called ripple in the radiation of flares on the surface of these stars, which explains Pugh, give the internal structure of the stars and allow assess what internal processes involved in the birth emission plasma.

So the artist imagined the exoplanet Kepler-438b

© Mark A Garlick / University of Warwick

These observations showed that superflare on KIC 9655129 generated about the same way as ordinary solar flare. This, according to Pugh and her colleagues suggests that the Sun can in principle be produced such powerful events, whose power exceeds the force of the explosion billion thermonuclear bombs capacity megaton.

The similar nature of super-flares and conventional coronal mass ejections on the sun does not mean that such events must occur on our luminary.

The first observation in 2012 showed that such outbreaks happen only 0.2% sunlike stars. Secondly, the last billion years of fossil history does not contain even a hint of superflare. Therefore, we can say that the probability of occurrence of such flares is vanishingly small.

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