Blar i Bergen Open Research Archive på forfatter "Gershman, Daniel J"

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    • Electron Acceleration and Thermalization at Magnetotail Separatrices 

      Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Graham, Daniel B.; Khotyaintsev, Yuri V.; Tenfjord, Paul; Vaivads, Andris; Steinvall, Konrad; Xu, Yin; Gershman, Daniel J; Lindqvist, Per-Arne; Plaschke, Ferdinand; Burch, James L (Journal article; Peer reviewed, 2020)
      In this study we use the Magnetospheric Multiscale mission to investigate the electron acceleration and thermalization occurring along the magnetic reconnection separatrices in the magnetotail. We find that initially cold ...

    • Electron Heating by Debye-Scale Turbulence in Guide-Field Reconnection 

      Khotyaintsev, Yuri V.; Graham, Daniel B.; Steinvall, Konrad; Alm, Love; Vaivads, Andris; Johlander, Andreas; Norgren, Astrid Elisabet Cecilia; Li, Wenya; Divin, Andrey; Fu, Huishan; Hwang, Kyoung-Joo; Burch, James L; Ahmadi, Narges; Le Contel, Olivier; Gershman, Daniel J; Russell, Christopher T.; Torbert, R. B. (Journal article; Peer reviewed, 2020)
      We report electrostatic Debye-scale turbulence developing within the diffusion region of asymmetric magnetopause reconnection with a moderate guide field using observations by the Magnetospheric Multiscale mission. We show ...

    • Millisecond observations of nonlinear wave–electron interaction in electron phase space holes 

      Norgren, Astrid Elisabet Cecilia; Graham, Daniel B.; Argall, Matthew; Steinvall, Konrad; Hesse, Michael; Khotyaintsev, Yuri V.; Vaivads, Andris; Tenfjord, Paul Arne Riksheim; Gershman, Daniel J; Lindqvist, Per-Arne; Burch, James L; Plaschke, Ferdinand (Journal article; Peer reviewed, 2022)
      Electron phase space holes (EHs) associated with electron trapping are commonly observed as bipolar electric field signatures in both space and laboratory plasma. Until recently, it has not been possible to resolve EHs in ...

    • MMS Measurements of the Vlasov Equation: Probing the Electron Pressure Divergence Within Thin Current Sheets 

      Shuster, JR; Gershman, Daniel J; Chen, LJ; Wang, S; Bessho, Naoki; Dorelli, John C; da Silva, DE; Giles, Barbara L; Paterson, William R.; Denton, Richard E; Schwartz, S. J.; Norgren, Astrid Elisabet Cecilia; Wilder, F.D.; Cassak, P.A.; Swisdak, M; Uritsky, Vadim; Schiff, C.; Rager, AC; Smith, S; Avanov, LA; Vinas, AF (Journal article; Peer reviewed, 2019)
      We investigate the kinetic structure of electron‐scale current sheets found in the vicinity of the magnetopause and embedded in the magnetosheath within the reconnection exhaust. A new technique for computing terms of the ...

    • Universality of Lower Hybrid Waves at Earth's Magnetopause 

      Graham, D. B.; Khotyaintsev, Yu V; Norgren, Astrid Elisabet Cecilia; Vaivads, Andris; Andre, M.; Drake, J. F.; Egedal, J.; Zhou, M.; Le Contel, O; Webster, J.M.; Lavraud, B.; Kacem, Imed; Génot, V.; Jacquey, C.; Rager, AC; Gershman, Daniel J; Burch, J. L.; Ergun, Robert E (Journal article; Peer reviewed, 2019)
      Waves around the lower hybrid frequency are frequently observed at Earth's magnetopause and readily reach very large amplitudes. Determining the properties of lower hybrid waves is crucial because they are thought to ...