Astronomers discover “feathers” in the sun’s corona


Washington – Arabs today
Using NASA data and advanced image-processing technology, astrophysicists from the United States and Britain have discovered thin, feather-like structures in the sun’s corona that form the current of the solar wind. The Astrophysical Journal reports that the sun’s corona consists of plasma, an ionized gas that is controlled by the magnetic field by the combination of Complex in the sun’s atmosphere. The surface of the sun is punctuated by ever-changing sets of closed and open magnetic field lines, from which the solar wind blows.

The sun’s magnetic field and the associated solar winds form space weather in and around the solar system, and solar wind disturbances affect humans and space devices. The open areas in the sun’s magnetic field create coronal holes, which are dark spots of low intensity. Within a few days, some of these holes release fountains of solar material called the “tail” (column), which can be seen clearly in ultraviolet rays and monitored by the NASA Solar Dynamics Observatory (SDO).

Scientists were able, using this observatory and advanced technology in image processing, to discover that this solar material is composed of fine filaments, which they called “feathers”. If the size of this “tail” equals 100,000 kilometers, then the thread width ranges between 3-7 thousand kilometers. Head of the research team, Vadim Uritsky of the American Catholic University in Washington and Goddard Space Flight Center, says, “This demonstrates the importance of small structures and ongoing operations. In the sun, in understanding the solar wind system and the weather of space in general. ”It became clear to scientists, that“ feathers ”are not just a component of the“ tail ”, but rather the basic building block of the“ tail, ”as its brightness is directly related to the number of“ feathers. ” Scientists also, that each “feather” vibrates automatically and independently, which allowed the scientists to assume that the behavior of these structures may be the cause of local disturbances to the solar wind.

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Source :” Arabs today


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