What causes radio blackouts after a solar flare? 🧐
Solar flares are bursts of energy that are released from the solar surface. Not all bursts are the same and are classified on the basis of the energy released from them, with Class A being the least powerful and Class X being the most powerful. Between them are classes B, C, and M, each one ten times more powerful than the previous class. Electromagnetic radiation that erupts during a solar flare can last from a few minutes to hours, states on its website.
The high levels of X-rays and ultraviolet radiation in solar flares interact with the upper layers of the Earth's atmosphere and ionize them. The upper layers of the atmosphere are used to refract high-frequency radio waves typically used in navigation systems and. When these radio waves meet highly ionized layers of the atmosphere, they lose their energy due to the frequency of collisions, resulting in their degradation or complete absorption.
Radio blackouts are also classified on the basis of their intensities, ranging from R1 to R5 extreme. As we mentioned earlier during our coverage, the Sun is currently in an active phase of its solar cycle and has been sending out solar flares over the last month. On May 3rd, it sent out a Class M flare at 8:19 pm ET, which was captured by NASA's SDO and its image widely shared.
The SWPC predicted radio blackouts of up to an hour following this flare, which was about the same strength as the one that hit Asia and Australia
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