Corpus ID: 198447971

A kinetic perspective of electron trapping near a weakly outgassing comet

  title={A kinetic perspective of electron trapping near a weakly outgassing comet},
  author={Chaitanya Prasad Sishtla},
The European Space Agency’s Rosetta spacecraft followed the comet 67P/Churyumov-Gerasimenko from August 2014 to September 2016, providingobservations of the comet ionosphere at varying heliocentric ... 


A Fully Kinetic Perspective of Electron Acceleration around a Weakly Outgassing Comet
The cometary mission Rosetta has shown the presence of higher-than-expected suprathermal electron fluxes. In this study, using 3D fully kinetic electromagnetic simulations of the interaction of theExpand
Ionospheric plasma of comet 67P probed by Rosetta at 3 au from the Sun
We propose to identify the main sources of ionization of the plasma in the coma of comet 67P/Churyumov-Gerasimenko at different locations in the coma and to quantify their relative importance, for ...
Electron and Ion Dynamics of the Solar Wind Interaction with a Weakly Outgassing Comet.
Using a 3D fully kinetic approach, the ion and electron dynamics of the solar wind interaction with a weakly outgassing comet are disentangled and it is concluded that a detailed kinetic treatment of the electron dynamics is critical to fully capture the complex physics of mass-loading plasmas. Expand
Large-scale electron acceleration by parallel electric fields during magnetic reconnection
Magnetic reconnection is a process by which the field lines of a magnetized plasma undergo dramatic realignment, releasing large amounts of energy. Large-scale simulations of reconnection events inExpand
Building a Weakly Outgassing Comet from a Generalized Ohm's Law.
A 3D fully kinetic approach is used to distill the components of a generalized Ohm's law and the effective electron equation of state directly from the self-consistently simulated electron dynamics and identify the driving physics in the various regions of the cometary plasma environment. Expand
Plasma source and loss at comet 67P during the Rosetta mission
Context. The Rosetta spacecraft provided us with a unique opportunity to study comet 67P/Churyumov-Gerasimenko from a close perspective and over a two-year time period. Comet 67P is a weakly activeExpand
Interaction of the solar wind with comets: a Rosetta perspective
  • K. Glassmeier
  • Physics, Medicine
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2017
Proton deflection, cross-field current and the instability induce a threefold structure of the innermost interaction region with the characteristic Mach cone and Whistler wings as stationary interaction signatures as well as the ULF waves representing the dynamic aspect of the interaction. Expand
Suprathermal electrons near the nucleus of comet 67P/Churyumov‐Gerasimenko at 3 AU: Model comparisons with Rosetta data
Observations of the coma near the nucleus of comet 67P/Churyumov-Gerasimenko (67P) made by the IES (Ion and Electron Sensor) instrument onboard the Rosetta Orbiter during late 2014 showed thatExpand
Modeled Interaction of Comet 67P/Churyumov-Gerasimenko with the Solar Wind Inside 2 AU
Periodic comets move around the Sun on elliptical orbits. As such comet 67P/Churyumov-Gerasimenko (hereafter 67P) spends a portion of time in the inner solar system where it is exposed to increasedExpand
The atmosphere of comet 67P/Churyumov-Gerasimenko diagnosed by charge-exchanged solar wind alpha particles
Context. The ESA/Rosetta mission has been orbiting comet 67P/Churyumov-Gerasimenko since August 2014, measuring its dayside plasma environment. The ion spectrometer onboard Rosetta has detected twoExpand