Why is the recent sun flare frequent? Star normal phenomenon without worry

The NASA Sun Power Observatory observes the solar flares on September 10. According to foreign media reports, from the beginning of last week, the sun will have been steadily producing flares. The solar activity cycle is 11 years, which is the strongest flare outbreak recorded in the current cycle. Although it sounds a bit scary, but scientists call this is the normal phenomenon of stars, without worry.

图为NASA太阳动力天文台9月10日观测到的太阳耀斑。
图为NASA太阳动力天文台9月10日观测到的太阳耀斑。

The solar flare is a strong radiation that has erupted after the sunspot-related magnetic field activity period. Sometimes the sun will be issued within the intensity of a large magnetic field lines, piercing from the sun’s surface, they formed a solar flare. The solar flare is the largest explosion in the solar system, producing very bright light, ranging from a few minutes to a few hours. Earth’s atmosphere can block most of the harmful rays, but radiation will still interfere with GPS, radio and communication signals, especially in areas close to the polar regions. On September 10, 2017, the NASA Sun Power Observatory recorded a sun flare at the X8.2 level. X-level flare is the most powerful type of flare, followed by the figures further depict its strength, such as the X2 level of intensity for the X1 level twice, X3 is X1 level 3 times, and so on. M-level flare intensity of 10 points for the X-class, C-level flare is the weakest of a class. X and M-level flares can lead to temporary failure of the radio on Earth, but also lead to other minor failures. Unless they belong to a great intensity, a hundred years of the solar storm, so bad.

The picture shows NASA’s Solar Dynamic Observatory observed September 10 solar flares solar flares occur once the sun active region 2673

, the scientists first observed on August 29 this phenomenon. From September 4 onwards, the region’s solar activity began to strengthen. In the past week, NASA has recorded six significant solar flares, of which September 6 recorded a X2.2 and X9.3 level, September 7 recorded a X1.3 level. The X9.3 flare is the largest ever recorded in the solar cycle. The solar activity cycle is 11 years, we are in the ninth year of this cycle, about to enter the sun activity for a very short period. During the solar activity recession, the sun flares of this size should be said to be very rare, but these recent flares have shown that the solar flares of the recession can reach great intensity.

“The large-scale flare near the end of the sunspot activity is not uncommon, in fact, this is a very normal performance.” American Atmospheric Research Center High-altitude Observatory Director Scott McIntosh (Scott MacIntosh) pointed out that the “difficulty lies in explaining the cause.”

图为NASA太阳动力天文台9月10日观测到的太阳耀斑
图为NASA太阳动力天文台9月10日观测到的太阳耀斑

McIntosh said that when the degree of solar activity decreased, the sunspot magnetic system will be close to the equator around the contact, the sun to generate ” Mixed “sunspots, like the sea and the sea in the north and south hemisphere, the magnetic field of the region will twist rotation.

“Earth’s rotation causes the north-south hemisphere to rotate in different directions, and the sun also has this phenomenon, and is also due to the Coriolis force.” McIntosh pointed out that “these systems are very This type of sunspot usually produces the largest and most influential solar flares and coronal outbreaks. “

<McKinto said, the contradiction is that the history of the largest recorded geomagnetic storms Occurs in the solar activity for a very short period and can last for a long time, although the total number of flares is small. "This is mainly related to the interaction between the different magnetic field systems."

shows the XII.3 and X9.3 solar flares generated on September 6th.

The US National Oceanic and Atmospheric Administration (NOAA) issued a September 13 earthquake warning and a low warning on September 14 due to the recent solar flare. This should not be a big problem for the Earth, but NASA Sun scientist Mitzi Adams points out that we need to be wary of solar flares and coronal outbreaks because we are highly dependent on technologies that may be affected by these events.

The Space Weather Forecasting Center (SWPC) has released a photo taken by the Sun and the Solar Watch Observer (SOHO), which is dotted with ‘freckles’. These freckles are actually colliding with the camera “The sun activity will also lead to radio interruption, damage to the pipeline, and produce ground current, destroy the transformer. Through monitoring and basic research, we hope that the sun is currently on the sun,” said Adams, And the future performance of the understanding, so that the satellite, power grid, and even astronauts to prepare. “

Adams pointed out that the damage to the detector camera high-energy particles per hour 150 million kilometers per hour, only an hour Will be able to reach the earth from the sun. But the particles “big forces” but also a few days to reach, gave us some preparation time. (Leaves)

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