Sun cooked Earth surprise

Sun cooked Earth surprise

photo: The sun formed one of the largest active regions this year

On the invisible side of the sun there is not yet visible from Earth‘s active area. It will go into the field of view of the Earth 10? July 11 and will remain until 24? July 25th. Area may lead to the most significant recent increase in X-ray background in Earth orbit.

One of the biggest this year of active solar regions in the coming days will go into the field of view of the Earth. According to the laboratory X-ray astronomy Sun LPI likely, it will get in the directory until NOAA free number 1087.

Area is currently still on the back side of the Sun. The only device that can observe it — the American satellite Stereo Behind, located at a distance of more than 170 million km from the Earth and having the opportunity to look at the reverse side of the invisible to us the sun.

But now with the Earth (for example, via satellite SOHO) you can see the large systems of magnetic loops encircling the active region and extending to a height of 200? 300 thousand. Miles, so they rise from the edge of the solar disk. After about two days, 10? July 11 due to the rotation of the Sun region finally go on the side facing the Earth. Across the solar disk, it will be left to right, from the east side to the west, up to 24 × 25-July.

According to preliminary estimates, the region formed in 1087 — one of the largest in the new solar cycle, and perhaps the most significant this year. A final assessment can be given when the area will be released in the field of view of the Earth and in addition to the magnetic loops will be visible on the surface of the sun sunspot group.

Now, although the active region is still on the back side of the Sun, an increase in X-ray background in the orbit of the Earth, which has already reached the level of flash B. 8 July led to the first X-ray bursts associated with activity in the upper region, which is already visible from the edge of the disc . Solar radio flux increased while unimportant, but soon he could grow significantly worse.

In the near future we expect a sharp increase in solar flare activity. In the regime of continuous monitoring of the Sun has now been passed European Observatory Proba-2 and the Japanese satellite Hinode. How justified is this forecast, it will become clear in a few days.


STEREO (Solar TErrestrial RElations Observatory) — one of the most unusual projects to study the Sun. October 26, 2006 launch vehicle Delta II brought into space from two spacecraft — Stereo Ahead and Stereo Behind. Both probes have made gravitational maneuvers in the gravitational field of the moon, but flew a considerable distance from each other.

One unit moves in an orbit located slightly closer to the Sun, the Earth, the other — a little further. As a result, Stereo Ahead and Stereo Behind send pictures taken from different angles simultaneously. This allows you to create a three-dimensional picture of the observations.


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