Solar Flares The strongest solar flare recorded since 1976 was in which year

November 4, 2003 (from the literature, must be correct).

It could directly destroy the atmosphere on that side of the Earth that was facing the sun at the time, and then the ultraviolet rays would destroy most life, due to.

Under the influence of electromagnetism, all the equipment with a higher level of technology than the steam engine failed. Humanity will become extinct as a result.

The largest solar flare is called an "X-class flare".

The levels of solar flares are represented by different letters, from lowest to highest intensity: A, B, C, M, and X. with descriptively.

The magnitude of the earthquake is similar on the Richter scale, with each letter representing a burst of energy that has increased by 10 times that of the previous level. That is, the strength of X-class flares.

The degree is 10 times that of the M grade and 100 times that of the C grade.

Solar flares are divided into five categories: A, B, C, M, and X, and their intensity increases sequentially. Among them, M-class and X-class flares will erupt in near-Earth space.

The impact on the environment is significant.

A solar flare is one of the most intense solar activities. The cycle is about 11 years. It is generally believed to occur in the chromosphere, so it is also called "chromosphere explosion".

Its main observation feature is that the rapidly developing bright spots suddenly appear on the surface of the sun (often over the sunspot group), and its lifetime is only between a few minutes and tens of minutes, and the brightness rises rapidly and decreases slowly. Especially when flares are frequent and become stronger.

Generally, brightening areas of more than 300 million square kilometers are called flares, while those with an area of less than 300 million square kilometers are called sub-flares.

With continuous research, astronomers have divided flares into:

Optical flare: emits visible light-enhanced radiation and can be observed with monochromatic light.

X-ray flare: A white flare observed with an X-ray: Visible on white light**, this type of flare is extremely rare.

And the flare was not fired once in 11 years, it was first discovered in 1859. The frequency of flares varies, but can occur once every few days when the sun is active. Conversely, when the sun is stable, it may not occur once a week. Small flares are more common than large flares.

The gases above the earth's surface are simply irradiated by sunlight, which will produce air convection, and will produce strong convection such as typhoons. Then the gas on the surface of the sun produced in the extreme combustion state not only produces convection, but also because the convection is produced in the extreme state, the gas convection produced on the surface of the sun is also extreme gas convection. On Earth, the speed of sound is the ultimate velocity of the flow of gas, and likewise, the maximum velocity of gas on the Sun is also the speed of sound.

However, because the natural parameters on the Sun are very different from those of the Earth, the speed of sound on the Sun is not the same as the speed of sound on the Earth, which makes it possible for the wind speed on the Sun to exceed the speed of sound on the Earth, and there may be other constraints, so that the wind speed of the Sun may be lower than the speed of sound on the Earth. In short, the speed of the solar wind is much greater than that of a hurricane, so the solar wind reaches an extreme state. The extreme state makes the speed of the solar wind produce a basically stable normal, and the basic normal speed of the solar wind also makes the sunspots produced by the solar wind basically stable. The main thing is that the extreme conditions make the speed of the solar wind basically stable.

In this way, whether the solar wind moves along the meridian, the latitude, or other lines, because the speed of the solar wind is basically stable, the cycle of the solar wind moving on the surface of the sun is locked in a little more than 11 years, that is, the sunspots on the surface of the sun will change with the cycle of the solar wind. In other words, sunspots are a cyclical phenomenon produced when the wind moves on the surface of the sun, so the cycle of sunspots is also a little more than 11 years. That is, the cycle of a solar flare is about 11 years.

This is because the sun's magnetic poles are not two, but many, and the sun is a plasma, and the speed of its rotation is different at different latitudes, resulting in the distortion of the magnetic field, and this magnetic field is distorted for 11 years.

This is based on a large number of observations, and for no reason, many theorems in physics are summarized from a large number of observations, such as Newton's gravitational force.

It was learned from the National Space Science Center of the Chinese Academy of Sciences that at 7:53 p.m. on September 6, the Sun exploded a large flare, triggering a solar proton event and coronal mass ejection. It was the Sun's strongest eruption since 2005 and the first shot of a new solar storm.

The accompanying coronal mass ejection may reach the Earth tomorrow night or the day after tomorrow, which will cause strong disturbances in the Earth's magnetosphere, ionosphere and upper atmosphere, and this huge space environment disturbance may affect the performance and safety of satellites and other vehicles operating in it, such as: the density of the upper atmosphere increases, increasing the resistance of satellite operation, thereby accelerating the decay of satellite orbits; Ionospheric bursts may affect shortwave communications and satellite navigation; Thermal plasma implantation can induce satellite surface charging; High-energy electronic bursts may cause deep satellite charging hazards.

The solar flare erupted by a sunspot group codenamed AR2673, which has erupted more than 10 solar flares in five days since September 3, among which the solar flare that erupted on September 4 was accompanied by coronal mass ejections and directly led to a moderate solar proton event.

The medium-solar proton event that has already occurred so far is still ongoing and could strengthen again in the next two days. When a solar flare occurs, it will affect the short-wave communication on the earth to varying degrees, but because the solar flare occurred at night in China, it has little impact on the short-wave communication on the earth.

In the coming days, there is still a possibility that the sunspot group, codenamed AR2673, will produce a large eruption. The Research Center for Space Environmental Forecasting of the Chinese Academy of Sciences will continue to pay attention to and give the latest forecasts in a timely manner.

It is a very profound question, and it is worth pondering.