Search for dissertations about: "space structures"

Showing result 1 - 5 of 567 swedish dissertations containing the words space structures.

  2. 1. Space Plasma Dynamics : Instabilities, Coherent Vortices and Covariant Parametrization

    Author : David Sundkvist; Jan-Erik Wahlund; Andris Vaivads; Stuart Bale; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Space and plasma physics; space physics; plasma; instabilities; turbulence; coherent structures; vortex; self-organization; magnetosphere; waves; electromagnetism; covariant; space instrumentation; Rymd- och plasmafysik; Space physics; Rymdfysik;

    Abstract : The magnetospheric cusps are two funnel-like regions of Earth's magnetosphere where solar wind plasma can have direct access to the ionosphere. The cusps are very dynamic regions where wave-particle interactions continuously take place and redistribute energy among different particle populations. READ MORE

  4. 2. The importance of waves in space plasmas : Examples from the auroral region and the magnetopause

    Author : Gabriella Stenberg; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Space and plasma physics; Plasma waves; magnetospheric physics; magnetopause; auroral region; wave distribution function; space exploration; reconnection; current tubes; Rymd- och plasmafysik; Space physics; Rymdfysik; rymdfysik; Space Physics;

    Abstract : This thesis discusses the reasons for space exploration and space science. Space plasma physics is identified as an essential building block to understand the space environment and it is argued that observation and analysis of space plasma waves is an important approach.Space plasma waves are the main actors in many important processes. READ MORE

  5. 3. Making Place for Space : a History of 'Space Town' Kiruna 1943-2000

    Author : Fredrick Backman; Erland Mårald; Jenny Eklöf; Sven Widmalm; Umeå universitet; []
    Keywords : HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; history of science; history of technology; space physics; space science; space technology; geophysics; cultural geography; place-making; regional identity; Kiruna; Sweden; 20th century; History Of Sciences and Ideas; idé- och lärdomshistoria;

    Abstract : Science and technology have a tendency to clump together in places where they spawn other forms of societal activities. Sometimes these places become famous through processes known as place-making, or the social construction of place. READ MORE

  6. 4. Alfvén Waves and Energy Transformation in Space Plasmas

    Author : Yuri Khotyaintsev; Kalevi Mursula; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Space and plasma physics; Alfvén waves; particle acceleration; ionosphere; magnetopause; magnetic reconnection; Rymd- och plasmafysik; Space physics; Rymdfysik; Space Physics; rymdfysik;

    Abstract : This thesis is focused on the role of Alfvén waves in the energy transformation and transport in the magnetosphere. Different aspects of Alfvén wave generation, propagation and dissipation are considered. The study involves analysis of experimental data from the Freja, Polar and Cluster spacecraft, as well as theoretical development. READ MORE

  7. 5. Structures and processes in the Mercury magnetosphere

    Author : Elisabet Liljeblad; Tomas Karlsson; Anita Kullen; Haje Korth; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mercury; MESSENGER; magnetosphere; processes; structures; Electrical Engineering; Elektro- och systemteknik;

    Abstract : The mechanisms involved in the transfer of mass and energy from the solar wind to any planetary magnetosphere is considered an important topic in space physics. With the use of the Mercury spacecraft MESSENGER's data, it has been possible to study these processes in an environment different, yet similar, to Earth's. READ MORE