Sökning: "ionosphere"

Visar resultat 1 - 5 av 63 avhandlingar innehållade ordet ionosphere.

  1. 1. Titan’s ionosphere and dust : – as seen by a space weather station

    Författare :Oleg Shebanits; Jan-Erik Wahlund; Wolf Dietrich Geppert; Olle Björneholm; Erik Vigren; Cesar Bertucci; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Titan; Cassini; Ionosphere; Dusty plasma; Ion-ion plasma; Langmuir probe; aerosols; tholins; Space and Plasma Physics; Rymd- och plasmafysik;

    Sammanfattning : Titan, the largest moon of Saturn, is the only known moon with a fully developed nitrogen-rich atmosphere, its ionosphere is detectable as high as 2200 km above its surface and hosts complex organic chemistry. Titan’s atmosphere and ionosphere has striking similarities to current theories of these regions around Earth 3.5 billion years ago. LÄS MER

  3. 2. Diving Deep into Saturn's Equatorial Ionosphere with Cassini : Insights from the Grand Finale

    Författare :Joshua Dreyer; Erik Vigren; Michiko Morooka; Jan-Erik Wahlund; Ingo Müller-Wodarg; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Saturn; Cassini; Grand Finale; Ionosphere; Photochemistry; Planetary Rings; Planetary Science; Space Plasma; Space Physics; Fysik med inriktning mot rymd- och plasmafysik; Physics with specialization in Space and Plasma Physics;

    Sammanfattning : In the summer of 2017, the Cassini mission concluded its nearly 13 years orbiting Saturn with a series of daring dives between the rings and the upper reaches of Saturn's atmosphere. This last phase of the mission, called the Grand Finale, revealed a highly variable equatorial ionosphere dominated by a large influx of ring material from Saturn's D ring. LÄS MER

  4. 3. Saturn's dusty equatorial ionosphere from Cassini's Grand Finale observations

    Författare :Joshua Dreyer; Erik Vigren; Lorenz Roth; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Saturn; Cassini; ionosphere; space plasma; planetary science; Fysik med inriktning mot rymd- och plasmafysik; Physics with specialization in Space and Plasma Physics;

    Sammanfattning : The Cassini mission provided unprecedented insights into the Kronian system and revealed many unexpected phenomena relating to dusty plasma environments around Saturn and its rings. Almost 13 years after its arrival, Cassini began a series of 22 orbits which brought it between Saturn's upper atmosphere and the innermost D ring, culminating in a final plunge into Saturn's ionosphere. LÄS MER

  5. 4. Pre-biotic molecules and dynamics in the ionosphere of Titan : a space weather station perspective

    Författare :Oleg Shebanits; Jan-Erik Docent; Ingo Müller-Wodarg; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Saturn; Titan; Ionosphere; Langmuir Probe; Space and Plasma Physics; Rymd- och plasmafysik;

    Sammanfattning : Saturn’s largest moon Titan (2575 km radius) is the second largest in the Solar system. Titan is the only known moon with a fully developed nitrogen-rich atmosphere with ionosphere extending to ~2000 km altitude, hosting complex organic chemistry. LÄS MER

  7. 5. On the Formation and Structure of the Ionosphere of Titan

    Författare :Karin Ågren; Jan-Erik Wahlund; Andrew Nagy; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Titan; Cassini; space physics; ionisation; electron density; ionosphere; negative ions; electric currents; electric fields; solar zenith angle; Langmuir probe; Space and Plasma Physics; Rymd- och plasmafysik;

    Sammanfattning : We present results on the ionospheric structure around Titan observed during numerous deep (.... LÄS MER