CfA: A Look Inside the Central Engine of a Solar Flare

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bystander
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CfA: A Look Inside the Central Engine of a Solar Flare

Post by bystander » Mon Jul 27, 2020 8:13 pm

A Look Inside the Central Engine of a Solar Flare for the First Time
Harvard Smithsonian Center for Astrophysics | 2020 Jul 27
Scientists from the Center for Astrophysics | Harvard & Smithsonian and the New Jersey Institute of Technology today announced the first successful measurement and characterization of the "central engine" of large solar flare. The findings, published today in Nature Astronomy, reveal the source of the intense energy powering solar flares.

According to the study—which closely examined a large solar flare accompanied by a powerful eruption captured on September 10, 2017, by the NJI's Owens Valley Solar Array (EOVSA), at microwaves—the intense energy powering the flare is the result of an enormous electric current "sheet" stretching more than 40,000 kilometers—greater than the length of three Earths placed side-by-side—through the core flaring region, where opposing magnetic field lines approach, break, and reconnect. ...

Measurements taken during the study also indicate a magnetic, bottle-like structure located at the top of the flare's loop-shaped base, or flare arcade, at a height of nearly 20,000 kilometers above the surface of the Sun. The study suggests that this is the primary site where a solar flare’s highly energetic electrons are trapped and accelerated to nearly the speed of light. ...

Measurement of Magnetic Field and Relativistic Electrons Along a Solar Flare Current Sheet ~ Bin Chen et al
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neufer
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Re: CfA: A Look Inside the Central Engine of a Solar Flare

Post by neufer » Tue Jul 28, 2020 2:29 am

bystander wrote:
Mon Jul 27, 2020 8:13 pm
A Look Inside the Central Engine of a Solar Flare for the First Time
Harvard Smithsonian Center for Astrophysics | 2020 Jul 27
Scientists from the Center for Astrophysics | Harvard & Smithsonian and the New Jersey Institute of Technology today announced the first successful measurement and characterization of the "central engine" of large solar flare. The findings, published today in Nature Astronomy, reveal the source of the intense energy powering solar flares.

Measurements taken during the study indicate a magnetic, bottle-like structure located at the top of the flare's loop-shaped base, or flare arcade, at a height of nearly 20,000 kilometers above the surface of the Sun. The study suggests that this is the primary site where a solar flare’s highly energetic electrons are trapped and accelerated to nearly the speed of light. ...
Measurements indicate a bottle-like structure located at the top of the bystander's loopy-shaped base at a height of nearly 20,000 posts. This is the primary site where highly energetic plectrons are trapped and accelerated to nearly the speed of Dwight.
Art Neuendorffer