Finite gyroradius effects in the electron outflow of asymmetric magnetic reconnection

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Finite gyroradius effects in the electron outflow of asymmetric magnetic reconnection

Norgren, Cecilia (author): Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Rymd- och plasmafysik

Graham, Daniel B. (author): Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen

Khotyaintsev, Yu. V. (author)

André, Mats (author): Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen

Vaivads, Andris (author): Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen

Chen, L. -J (author)

Lindqvist, Per-Arne (author): KTH,Rymd- och plasmafysik

Marklund, Göran T. (author): KTH,Rymd- och plasmafysik,KTH Royal Inst Technol, Sch Elect Engn, Space & Plasma Phys, Stockholm, Sweden.

Ergun, R. E. (author): Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.

Magnes, W. (author): Austrian Acad Sci, Space Res Inst, Graz, Austria.

Strangeway, R. J. (author): Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA USA.

Russell, C. T. (author): Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA USA.

Torbert, R. B. (author): Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA.

Paterson, W. R. (author): NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.

Gershman, D. J. (author): NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.;Univ Maryland, Dept Astron, College Pk, MD 20742 USA.

Dorelli, J. C. (author): NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.

Avanov, L. A. (author): NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.

Lavraud, B. (author): Univ Toulouse, Inst Rech Astrophys & Planetol, Toulouse, France.;CNRS, UMR 5277, Toulouse, France.,NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.,Southwest Res Inst, San Antonio, TX USA.

Saito, Y. (author): Inst Space & Astronaut Sci, JAXA, Sagamihara, Kanagawa, Japan.

Giles, B. L. (author)

Pollock, C. J. (author): NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.

Burch, J. L. (author)

Khotyaintsev, Yuri V. (author): Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen

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Blackwell Publishing, 2016
2016
English.
In: Geophysical Research Letters. - : Blackwell Publishing. - 0094-8276 .- 1944-8007. ; 43:13, s. 6724-6733

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; https://urn.kb.se/re...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

We present observations of asymmetric magnetic reconnection showing evidence of electron demagnetization in the electron outflow. The observations were made at the magnetopause by the four Magnetospheric Multiscale (MMS) spacecraft, separated by approximate to 15km. The reconnecting current sheet has negligible guide field, and all four spacecraft likely pass close to the electron diffusion region just south of the X line. In the electron outflow near the X line, all four spacecraft observe highly structured electron distributions in a region comparable to a few electron gyroradii. The distributions consist of a core with T-vertical bar>T and a nongyrotropic crescent perpendicular to the magnetic field. The crescents are associated with finite gyroradius effects of partly demagnetized electrons. These observations clearly demonstrate the manifestation of finite gyroradius effects in an electron-scale reconnection current sheet.

Subject headings

NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geofysik (hsv//swe)
NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geophysics (hsv//eng)
NATURVETENSKAP -- Fysik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences (hsv//eng)
NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Keyword

magnetic reconnection
electron demagnetization
finite gyroradius effects
electron diffusion region

Publication and Content Type

ref (subject category)
art (subject category)

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NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Geophysics

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Astronomy Astrop ...

Articles in the publication: Geophysical Rese ...

By the university: Royal Institute of Technology; Uppsala University

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