NASA on solar activity: Beneath the surface of the Sun there may lie the answers to the mystery about sunquakes, according to the US space agency National Aeronautics and Space Administration (NASA). For lengthy, scientists have believed that these events have been a outcome of magnetic forces or that the heated outer atmosphere was causing them. However, now, the Solar Dynamics Observatory (SDO) of NASA has discovered anything that differs from this lengthy-standing belief.
Sunquakes: What are they?
Sunquakes are the seismic activities that take place on the Sun for the duration of solar flares and these are events comparable to earthquakes. During such events, acoustic power is released along the solar surface in the kind of rippling waves and they take place in the minutes that adhere to a solar flare, NASA mentioned.
A solar flare is an outburst that happens in the outer atmosphere of the Sun, for the duration of which material, power as effectively as light is released.
The scientists suspected that the waves of the sunquakes dove down deep into the interior of the Sun by way of its surface, but it has been contradicted by the new findings of the SDO.
Sunquakes: What NASA has discovered
NASA mentioned that back in 2011, the SDO observed a moderately sturdy flare followed by a sunquake getting ripples that have been unusually sharp. With the assistance of helioseismic holography utilizing, scientists tracked the waves causing these ripples and traced their supply. The helioseismic and Magnetic Imager of the SDO measured how the solar surface moved.
The space agency discovered that the waves have been not travelling into the Sun, but as an alternative, sunquake ripples occurring on the solar surface originated from deep underneath the surface straight away following the occurrence of a solar flare. It was discovered that the acoustic supply lied a whopping 700 miles or about 1,127 km underneath the solar surface, in a important contrast to what the scientists earlier believed.
The scientists are now of the view that there is a submerged supply causing these waves and this supply is somehow triggered due to the solar flares. The precise mechanism causing these sunquakes, nonetheless, has not but been identified. The scientists would now continue to observe other sunquakes for clues about the mechanism, NASA mentioned.
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