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Title: Spacecraft Observations of Oblique Electron Beams Breaking the Frozen-In Law During Asymmetric Reconnection

Fully kinetic simulations of asymmetric magnetic reconnection reveal the presence of magnetic-field-aligned beams of electrons flowing toward the topological magnetic x line. Within the ~ 6d e electron-diffusion region, the beams become oblique to the local magnetic field, providing a unique signature of the electron-diffusion region where the electron frozen-in law is broken. These numerical predictions are confirmed by in situ Magnetospheric Multiscale spacecraft observations during asymmetric reconnection at Earth’s dayside magnetopause.
 [1] ; ORCiD logo [2] ; ORCiD logo [2] ;  [1] ;  [3] ;  [4] ;  [5] ;  [6] ;  [6] ;  [6]
  1. Univ. of Wisconsin, Madison, WI (United States). Dept. of Physics
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. West Virginia Univ., Morgantown, WV (United States). Dept. of Physics and Astronomy
  4. Southwest Research Inst. (SwRI), San Antonio, TX (United States)
  5. Univ. of Toulouse (France). Inst. of Research in Astrophysics and Planetology (IRAP)
  6. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States). Heliophysics Science Division
Publication Date:
Report Number(s):
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:
AC52-06NA25396; 1405166; NNX14AL38G
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 5; Journal ID: ISSN 0031-9007
American Physical Society (APS)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE; National Aeronautic and Space Administration (NASA); National Science Foundation (NSF)
Country of Publication:
United States
79 ASTRONOMY AND ASTROPHYSICS; magnetic reconnection; space and astrophysical plasma; Earth's magnetosphere; satellite data analysis
OSTI Identifier: