Essays about: "ionosphere"

Showing result 21 - 25 of 47 essays containing the word ionosphere.

1. 21. A kinetic perspective of electron trapping near a weakly outgassing comet

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Chaitanya Prasad Sishtla; [2019]
   Keywords : ;

   Abstract : 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 distances. Measurementsfrom the Rosetta mission have shown a multitude of non-thermalelectron distributions in the cometary environment, challenging the previouslyassumed origin and plasma interaction mechanisms near a cometary nucleus. READ MORE

3. 22. Coupled waves as a model to describe chaotic turbulence pumped by radio waves in the ionosphere

   University essay from Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen; Uppsala universitet/Institutionen för fysik och astronomi

   Author : Axel Hahlin; [2018]
   Keywords : turbulence; coupled waves; plasma;

   Abstract : Experimental results concerning plasma turbulence pumped in theionosphere by powerful radio waves suggest that the turbulence is due todeterministic chaos. To investigate the possibility of deterministic chaosin the ionosphere coupled wave systems have been studied to see chaoticdynamics. READ MORE

4. 23. Ionospheric model of comet 67P including the effect of solar EUV attenuation

   University essay from Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

   Author : Kilian Hikaru Scheutwinkel; [2018]
   Keywords : ionosphere; comet 67P CG; Rosetta;

   Abstract : Comets are the most active around their perigees. The increased outgassing can lead to a coma thick enough to effectively absorb the solar EUV radiation, which engenders a self-shielding comet nucleus and inner layers of the ionosphere. READ MORE

5. 24. Searching for Titan's tail

   University essay from Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

   Author : Joakim Kvarnström; [2018]
   Keywords : Titan; Ionosphere;

   Abstract : We have used Cassini measurements of electron density from Saturn's magnetosphere to search for a plasma tail behind the moon Titan. Such a plasma tail would consist of plasma that manage to escape Titan's gravitational pull and leave Titan's ionosphere to contribute to the plasma distribution in the Saturn system. READ MORE

6. 25. Incoherent Scattering of Twisted Radar Beams from the Ionosphere

   University essay from Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

   Author : Viktor Lannér; [2017]
   Keywords : ionosphere; plasma; twisted beams; orbital angular momentum; oam effects;

   Abstract : In the search for natural orbital angular momentum (OAM) effects, some of the first incoherent scatter experiments with twisted radar beams during aurora were conducted at Poker Flat Incoherent Scatter Radar (PFISR), Alaska, USA, in October 2012. Experimental data of scatter from beam configurations with opposite twists were investigated. READ MORE