Solar flares erupt from an area of dense magnetic field on the Sun’s surface, causing a temporary loss of radio signals in many places in Australia and throughout New Zealand.
Medium-strength class M5 solar flares recorded by NASA’s Solar Dynamics Observatory emanate from black line AR3141 at 6:11 a.m. on November 7, Hanoi time. The storm creates ionizing radiation in the Earth’s atmosphere.
Skin flares emitted from the surface of the Sun.
Flares emanate from the surface of the Sun. (Photo: NASA).
Sunspots are dark areas on the Sun’s surface where powerful magnetic fields, created by electrical currents, twist in a closed loop before suddenly breaking. As a result, the released energy is produced The flow of radiation is called solar flare and the flow of matter is called coronal eruption (CME). The CME accompanying the November 7 flare was not directed directly toward Earth. The eruption appeared so suddenly that scientists did not have time to warn before the event.
US National Oceanic and Atmospheric Administration (NOAA) Classification of solar flares According to 5 levels A, B, CM and X based on the intensity of the X-rays they emit, each level is 10 times more intense than the previous level. When they reach Earth, X-rays and ultraviolet radiation created by solar flares ionize atoms in the upper atmosphere, making that layer unable to reflect high-frequency radio waves and causing signal loss. Radio loss occurs in areas where the Sun shines during the flare and is classified from R1 to R5 depending on severity. The most recent flare caused an R2 level radio loss.
Astronomers began monitoring the Sun’s activity in 1775. The Sun’s activity waxes and wanes on an 11-year cycle, and has been particularly high in recent times with the number of sunspots almost twice as high as expected . The increased activity of the Sun emits numerous high-energy plasma waves and X-ray streams that collide with the Earth’s magnetic field, causing the Starlink satellite to fall, causing a loss of radio waves and auroras in the south, such as Pennsylvania, Iowa and Oregon. . .
Solar flares will hit Earth more frequently in the coming years. Researchers predict that the Sun’s activity will gradually increase, reaching its maximum in 2025, and then decrease again.
On the night of a solar storm, the Northern Lights will be much more visible than those in the south. This is because the Earth’s magnetic field is slightly compressed by waves of highly charged particles, tearing apart magnetic field lines and exciting molecules in the atmosphere.
Article source: VnExpress
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Solar flares erupt in an area with dense magnetic fields on the Sun’s surface, causing a temporary loss of radio signals in many parts of Australia and across…