on our site the sun A sudden outbreak of radiation occurs every now and then, with large amounts of high-energy particles often being released into space. meet like solar storm On the a landNot only does this cause the northern lights, but it can also cause serious damage to satellites, communications systems, or even power grids.
A solar glow is observed without sunspots
Solar flares mostly occur in multiple regions sunspots Instead, its magnetic fields are particularly strong and complex. However, on Friday August 13th (2108 UTC), a clean area near the center of the Sun’s disk fired one solar flare C1 class. NASA’s Solar Dynamics Observatory recorded the intense ultraviolet flash:
The outburst caused a slight ionization wave over the Pacific Ocean ( a map ), resulting in a change in the radio transmission propagation under ~5 MHz. This was also Earth’s only effect. nothing Coronal mass ejection occurred, which negates the possibility of a geomagnetic storm.
No visible sunspots
There are currently no sunspots on the sun – just small pores and areas of magnetic foam that “sun flaresAnnouncing his identity. So far, the year 2021 has seen 56 flawless days. This may sound like a lot, but it’s actually quite a drop in comparison. hundreds For clean days in 2019 and 2020. Despite the empty sun today, solar activity is increasing compared to previous years.
The current solar cycle and its evolution
What solar cycles are there anyway?
Schwab cycle (about 11 years)
The most notable course is the approximately 11-year-old Schwabe course based on Samuel Heinrich Schwabe. Successive extremes of the relative number of sunspots follow each other in this time interval.
Hill cycle (about 22 years)
Since the solar magnetic field is the cause of the Zeeman effect sunspot, its magnetic polarity can also be determined. In the solar hemisphere, the magnetic polarity of the spots changes from cycle to cycle. Thus, the 11-year cycle is based on a cycle twice as long as Hill’s 22-year cycle.
Evolution and prediction of the twenty-fifth solar cycle:
The following chart shows the number of Class C, M, and X solar flares, listed by year. This graphic gives us a nice overview of solar flares in terms of the number of sunspots. So it’s a special way to see how the solar cycle has evolved over time. This data comes from the NOAA SWPC and is updated monthly.
The following graph shows the number of days of geomagnetic storms in a year and how strong these storms are.
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