As these magnetic fields emerge through the Sun’s visible surface (the photosphere), they form sunspots and other active regions and create complex and dynamic plasma structures in the Sun’s upper atmosphere (corona

Surrounding the brilliant Sun is a layer of diffuse plasma known as the corona. You can’t see it most of the time, but if you happen to experience a total eclipse, the corona is the glow that surrounds the shadow of the Moon

Magnetic fields in Quiet Sun

The network field has an intrinsic property. Its fundamental elements have likely typical field strengths of 1000 – 2000 Gausses and diameters of 100 km. Although the theoretical estimated minimum size is near the current spatial resolution limit of about 10 km

Does the Sun have a magnetic field?

The plasma in the sun, therefore, sets up a complicated system of cause and effect in which plasma flows inside the sun – churned up by the enormous heat produced by nuclear fusion at the center of the sun – create the sun’s magnetic fields. This system is known as the solar dynamo

Is Earth’s magnetic field small?

Earth’s magnetic field intensity is roughly between 25,000 – 65,000 nT (. 25 – . 65 gauss). Magnetic declination is the angle between magnetic north and true north.

Why does the magnetic field protect us from sun

It deflects most of the solar material sweeping towards us from our star at 1 million miles per hour or more. Without the magnetosphere, the relentless action of these solar particles could strip the Earth of its protective layers, which shield us from the Sun’s ultraviolet radiation

During a close approach in October 2022, the rugged spacecraft’s Extreme Ultraviolet Imager (EUI) captured detailed images of small plasma arcs, and the Polarimetric and Helioseismic Imager (PHI) measured the magnetic polarity of the solar surface in the same region. It found that small polarity variations can drive the formation of arcs of plasma, which is sufficient to heat the corona even during the most quiet periods of solar activity. In other words, even when the Sun is not at an energetic boil, there is a constant simmer of activity that keeps the corona hot.

Small-scale magnetic fields are not only the fundamental element of the solar magnetism but also closely related to the structure of the solar atmosphere.

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