Solar Activity for 9-10.03.11.


On the Sun there was a second outbreak of a perfect score in the new 24th solar cycle

10.03.11.Na Sun at about 2 am, Moscow time, after a break of almost a month, there was a second in the new 24-second cycle of solar activity outbreak perfect score X. Exact score event was X1.5.

This means that the capacity of the new event by about one third as long as it gives a record outbreak of February 15, 2011, which had a score of X2.2. Outbreak was the result of the largest in this cycle burst of activity in the last five days in the sun were more than 70 outbreaks, 14 of which were classified as event points M (fourth, penultimate class on a five point scale). For comparison, for the whole of 2010 there were 22 flares of M, the year before, in 2009, no one but him in the previous 2008 — only one. X events perfect score on the Sun have been reported since December 2006.

Image Observatory SDO line 94 A near the maximum flash: 02:30 10 March 2011 (MSK)

Flash feature, in addition to power, and its position is. Area in 1166, where the event occurred, is located almost at the central meridian of the sun in front of the Earth (at the time of the flash, it was offset with respect to the Sun-Earth is 10 degrees). Such a situation is extremely geoeffective, ie emission of plasma from the Sun's atmosphere, which are almost always accompanied by large outbreaks, with very high probability zadenut Earth. In general, magnetic storms after flares are the exception rather than the rule, since the flare emissions are distributed in a narrow angular sector and in most cases pass by Earth. So in 2011, of the four, only one magnetic storms, February 18, was the result of a solar flare, and she was accompanied by just a record of the X class event on February 15. The remaining three were called magnetic storms hit the Earth in high-speed solar wind streams. It is likely that today's event will be 3-4 days after the cause of the second flare storm this year.

Currently, the Earth is not received data from space coronagraphs able to observe directly the volume of plasma ejected by the Sun, and to determine their direction. Once that happens, it will be possible to give a definitive answer about the strength of a possible disturbance. The most important characteristic of the emission to be measured, is its speed. It was from her will depend on both the time when it reaches the Earth's orbit, and that the force with which it hit the Earth's magnetosphere. Once these data become available, they will be published on the site.

Laboratory of X-ray astronomy of the Sun (LPI)



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