Another "black hole" on the Sun "threatens" the Earth with a magnetic storm

Solar observatories have recorded the formation of a coronal hole on the Sun in the equatorial region.

The solar wind from it will reach the Earth by the end of the working week and is expected to cause bright auroras.

This is the second giant coronal hole inthe surface of our star, which has been observed over the past week. Last week, Hi-Tech wrote about a huge "black hole" in the solar corona that caused a magnetic storm and bright auroras over the weekend.

Observations of the Sun in the extreme ultraviolet at a wavelength of 19.3 nm. Video: SDO, NASA

Recall that a coronal hole is a region inthe atmosphere of a star, in which the magnetic field lines are not closed, and therefore the plasma of the solar wind is released much faster. Coronal holes can generate very fast solar winds at over 800 km/s.

The researchers note that the new coronalthe hole is interesting not so much for its size as for its location. Most coronal holes form near the poles of a star. The wind that comes out of them often passes by the Earth. By contrast, being on the equator means that our planet is almost guaranteed to be in the path of charged particles.

Collision of the solar wind stream withEarth's magnetosphere causes magnetic storms and can lead to disruption of the operation of individual instruments and satellites. The researchers believe that solar wind streams from the new coronal hole will reach the Earth in 2-3 days, by the end of the working week. While the potential for damage to infrastructure is minimal, a magnetic storm can trigger auroras.

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