SwePub
Sök i LIBRIS databas

  Utökad sökning

id:"swepub:oai:DiVA.org:uu-336649"
 

Sökning: id:"swepub:oai:DiVA.org:uu-336649" > Electric and magnet...

  • Fowler, C. M.University of Colorado Boulder, Laboratory for Atmospheric and Space Physics (författare)

Electric and magnetic variations in the near-Mars environment

  • Artikel/kapitelEngelska2017

Förlag, utgivningsår, omfång ...

  • 2017
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:uu-336649
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-336649URI
  • https://doi.org/10.1002/2016JA023411DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • For the first time at Mars the statistical distribution of (1-D) electric field wave power in the magnetosphere is presented, along with the distribution of magnetic field wave power, as observed by the Mars Atmosphere and Volatile EvolutioN spacecraft from the first 14.5months of the mission. Wave power in several different frequency bands was investigated, and the strongest wave powers were observed at the lowest frequencies. The presented statistical studies suggest that the full thermalization of ions within the magnetosheath does not appear to occur, as has been predicted by previous studies. Manual inspection of 140 periapsis passes on the dayside shows that Poynting fluxes (at 2-16 Hz) between similar to 10(-11) and 10(-8) Wm(-2) reach the upper ionosphere for all 140 cases. Wave power is not observed in the ionosphere for integrated electron densities greater than 10(10.8)cm(-2), corresponding to typical depths of 100-200 km. The observations presented support previous suggestions that energy from the Mars-solar wind interaction can propagate into the upper ionosphere and may provide an ionospheric heating source. Upstream of the shock, the orientation of the solar wind interplanetary magnetic field was shown to significantly affect the statistical distribution of wave power, based on whether the spacecraft was likely magnetically connected to the shock or not-something that is predicted but has not been quantitatively shown at Mars before. In flight performance and caveats of the Langmuir Probe and Waves electric field power spectra are also discussed.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Andersson, L.University of Colorado Boulder, Laboratory for Atmospheric and Space Physics (författare)
  • Halekas, J.University Of Iowa, Department of Physics And Astronomy (författare)
  • Espley, J. R.NASA, Goddard Space Flight Center (författare)
  • Mazelle, C.University of Toulouse, CNRS, UPS, IRAP,CNES (författare)
  • Coughlin, E. R.University of California Berkeley, Department Astronomy; University of California Berkeley, Theoretical Astrophysics Center; Einstein Fellow (författare)
  • Ergun, R. E.University of Colorado Boulder, Laboratory for Atmospheric and Space Physics (författare)
  • Andrews, David J.Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen(Swepub:uu)davan153 (författare)
  • Connerney, J. E. P.NASA, Goddard Space Flight Center (författare)
  • Jakosky, B.University of Colorado Boulder, Laboratory for Atmospheric and Space Physics (författare)
  • University of Colorado Boulder, Laboratory for Atmospheric and Space PhysicsUniversity Of Iowa, Department of Physics And Astronomy (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Journal of Geophysical Research - Space Physics122:8, s. 8536-85592169-93802169-9402

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy