Researchers find evidence for a new fundamental constant of the Sun

Posted: February 9, 2019 by oldbrew in Electro-magnetism, research, solar system dynamics, waves
Tags:

Active solar regions
[image credit: NASA/Goddard]


Very interesting, bearing in mind that magnetism is caused by moving electric charges. The corona has frequencies.

New research undertaken at Northumbria University, Newcastle shows that the sun’s magnetic waves behave differently than currently believed, reports Phys.org.

Their findings have been reported in Nature Astronomy.

After examining data gathered over a 10-year period, the team from Northumbria’s Department of Mathematics, Physics and Electrical Engineering found that magnetic waves in the sun’s corona – its outermost layer of atmosphere – react to sound waves escaping from the inside of the sun.

These magnetic waves, known as Alfvénic waves, play a crucial role in transporting energy around the sun and the solar system. The waves were previously thought to originate at the sun’s surface, where boiling hydrogen reaches temperatures of 6,000 degrees and churns the sun’s magnetic field.

However, the researchers have found evidence that the magnetic waves also react – or are excited – higher in the atmosphere by sound waves leaking out from the inside of the sun.

The team discovered that the sound waves leave a distinctive marker on the magnetic waves. The presence of this marker means that the sun’s entire corona is shaking in a collective manner in response to the sound waves. This is causing it to vibrate over a very clear range of frequencies.

This newly-discovered marker is found throughout the corona and was consistently present over the 10-year time-span examined. This suggests that it is a fundamental constant of the sun – and could potentially be a fundamental constant of other stars.

The findings could therefore have significant implications for our current ideas about how magnetic energy is transferred and used in stellar atmospheres.

Continued here.

Comments
  1. oldbrew says:

    Alfvén waves

    A cluster of double layers forming in an Alfvén wave, about a sixth of the distance from the left. [credit:Wikipedia]
    Legend: * Red=electrons * green=ions * yellow=electric potential * orange=parallel electric field * pink=charge density * blue=magnetic field

    A double layer is a structure in a plasma consisting of two parallel layers of opposite electrical charge.
    https://en.wikipedia.org/wiki/Double_layer_(plasma_physics)
    – – –
    The convection zone of the sun, the region beneath the photosphere in which energy is transported primarily by convection, is sensitive to the motion of the core due to the rotation of the sun. Together with varying pressure gradients beneath the surface, electromagnetic fluctuations produced in the convection zone induce random motion on the photospheric surface and produce Alfvén waves.

    https://en.wikipedia.org/wiki/Alfv%C3%A9n_wave
    – – –
    our current ideas about how magnetic energy is transferred and used in stellar atmospheres – pun probably not intended.

  2. tallbloke says:

    Isn’t Northumbria University maths dept where Zharkova works?

  3. A C Osborn says:

    Nice to see actual Science being carried out to improve our understanding.
    Rather than the usual pushing the current dogma.

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