Sökning: "kometer"

Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet kometer.

  1. 1. De cometis diatriba quam ex occasione præsignis illius, qui a 10. Novemb. 1680. ad 4. febr. 1681 in coelo fulsit, disputationibus aliquot publicis in academia Upsaliensi sub idem tempus exposuit. Joannes Bilberg

    Författare :Johan Bilberg; Uppsala universitet; []
    Nyckelord :Kometer; Sverige;

    Sammanfattning : .... LÄS MER

  3. 2. Dissertatio de cometis quam consensu amplissimi collegii philosophici in regia Ubsalensi academia præside ... Jona Fornelio ... pro honor. philosoph. publico examini submittit Matthias Iser, Vermel. In audit. Gust. ad diem 27. Novemb. 1672. Hor. a m. consvetis

    Författare :Jonas Fornelius; Matthias Iser; Jonas Fornelius; Uppsala universitet; []
    Nyckelord :Comets; Kometer;

    Sammanfattning : .... LÄS MER

  4. 3. Rosetta Observations of Plasma and Dust at Comet 67P

    Författare :Fredrik Leffe Johansson; Anders Eriksson; Jan-Erik Wahlund; Nicolas André; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Rosetta; Comets; Plasma; Langmuir Probes; Dust; Spacecraft-plasma interaction; Electrostatic Probes; Rosetta; kometer; plasma; stoft; rymdfarkost-plasma växelverkan; Fysik med inriktning mot rymd- och plasmafysik; Physics with specialization in Space and Plasma Physics;

    Sammanfattning : In-situ observations of cometary plasma are not made because they are easy. The historic ESA Rosetta mission was launched in 2004 and traversed space for ten years before arriving at comet 67P/Churyumov-Gerasimenko, which it studied in unprecedented detail for two years. LÄS MER

  5. 4. Formation of Pebble-Pile Planetesimals and the Interior Structure of Comets

    Författare :Karl Wahlberg Jansson; Astronomi - Genomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; planets and satellites: formation; minor planets; asteroids: general; comets: general;

    Sammanfattning : Planets form in protoplanetary discs of gas, dust and ice around newborn stars. In the Solar System, not only planets are found as a result from the time of planet formation, but also remnant planetesimals in the form of asteroids, Kuiper belt objects and comets. Recent observations, e.g. LÄS MER

  7. 5. Radio meteors above the Arctic Circle : radiants, orbits and estimated magnitudes

    Författare :Csilla Szasz; Asta Pellinen-Wannberg; Noah Brosch; Umeå universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; meteors; meteoroids; dust; meteor radiants; meteoroid orbits; sporadic sources; radar; meteorradianter; meteoroidbanor; sporadiska källområden; radar; meteorer; meteoroider; interplanetärs stoft; Space engineering; Rymdteknik;

    Sammanfattning : This thesis presents results based on data collected with the 930 MHz EISCAT UHF radar system and three SKiYMet specular meteor radars. It describes in detail a method for meteoroid orbit calculation. The EISCAT UHF system comprises three identical 32 m parabolic antennae: one high-power transmitter/receiver and two remote receivers. LÄS MER