Sökning: WFRF:(Wedlund Cyril Simon) >
Hybrid modeling of ...
Hybrid modeling of cometary plasma environments : II. Remote-sensing of a cometary bow shock
-
- Alho, Markku (författare)
- Department of Electronics and Nanoengineering, School of Electrical Engineering, Aalto University, Aalto, Finland
-
- Wedlund, Cyril Simon (författare)
- Department of Physics, University of Oslo, Oslo, Norway
-
- Nilsson, Hans (författare)
- Luleå tekniska universitet,Rymdteknik,Swedish Institute of Space Physics, Kiruna, Sweden
-
visa fler...
-
- Kallio, Esa (författare)
- Department of Electronics and Nanoengineering, School of Electrical Engineering, Aalto University, Aalto, Finland
-
- Jarvinen, R. (författare)
- School of Electrical Engineering, Aalto University, Aalto, Finland. Finnish Meteorological Institute, Helsinki, Finland
-
- Pulkkinen, T.I (författare)
- School of Electrical Engineering, Aalto University, Aalto, Finland. Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI,USA
-
visa färre...
-
(creator_code:org_t)
- 2019-09-20
- 2019
- Engelska.
-
Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 630
- Relaterad länk:
-
https://www.aanda.or...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Context. The ESA Rosetta probe has not seen direct evidence of a fully formed bow shock at comet 67P/Churyumov–Gerasimenko (67P). Ion spectrometer measurements of cometary pickup ions measured in the vicinity of the nucleus of 67P are available and may contain signatures of the large-scale plasma environment.Aims. The aim is to investigate the possibility of using pickup ion signatures to infer the existence or nonexistence of a bow shock-like structure and possibly other large-scale plasma environment features.Methods. A numerical plasma model in the hybrid plasma description was used to model the plasma environment of a comet. Simulated pickup ion spectra were generated for different interplanetary magnetic field conditions. The results were interpreted through test particle tracing in the hybrid simulation solutions.Results. Features of the observed pickup ion energy spectrum were reproduced, and the model was used to interpret the observation to be consistent with a shock-like structure. We identify (1) a spectral break related to the bow shock, (2) a mechanism for generating the spectral break, and (3) a dependency of the energy of the spectral break on the interplanetary magnetic field magnitude and bow shock standoff distance.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Rymd- och flygteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Aerospace Engineering (hsv//eng)
Nyckelord
- comets: general
- comets: individual: 67P/Churyumov-Gerasimenko
- methods: numerical / plasmas / shock waves
- techniques: miscellaneous
- Atmospheric science
- Atmosfärsvetenskap
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas