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Observation of ener...
Observation of energetic electrons within magnetic islands
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Chen, Li-Jen (author)
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Bhattacharjee, A. (author)
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Puhl-Quinn, P. A. (author)
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Yang, H. (author)
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Bessho, N. (author)
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Imada, S. (author)
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Muehlbachler, S. (author)
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Daly, P. W. (author)
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Lefebvre, B. (author)
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- Khotyaintsev, Yuri (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Vaivads, Andris (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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Fazakerley, A. (author)
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Georgescu, E. (author)
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(creator_code:org_t)
- 2007-11-11
- 2008
- English.
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In: Nature Physics. - : Nature Publishing Group. - 1745-2473 .- 1745-2481. ; 4:1, s. 19-23
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
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- Magnetic reconnection is the underlying process that releases impulsively an enormous amount of magnetic energy(1) in solar flares(2,3), flares on strongly magnetized neutron stars(4) and substorms in the Earth's magnetosphere(5). Studies of energy release during solar flares, in particular, indicate that up to 50% of the released energy is carried by accelerated 20-100 keV suprathermal electrons(6-8). How so many electrons can gain so much energy during reconnection has been a long-standing question. A recent theoretical study suggests that volume-filling contracting magnetic islands formed during reconnection can produce a large number of energetic electrons(9). Here we report the first evidence of the link between energetic electrons and magnetic islands during reconnection in the Earth's magnetosphere. The results indicate that energetic electron fluxes peak at sites of compressed density within islands, which imposes a new constraint on theories of electron acceleration.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Physics
- Fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Chen, Li-Jen
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Bhattacharjee, A ...
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Puhl-Quinn, P. A ...
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Yang, H.
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Bessho, N.
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Imada, S.
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show more...
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Muehlbachler, S.
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Daly, P. W.
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Lefebvre, B.
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Khotyaintsev, Yu ...
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Vaivads, Andris
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Fazakerley, A.
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Georgescu, E.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Nature Physics
- By the university
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Royal Institute of Technology
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Uppsala University