Sökning: "Optical Transients"

Hittade 4 uppsatser innehållade orden Optical Transients.

  1. 1. A Close Look at the Transient Sky in a Neighbouring Galaxy

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Kiran Tikare; [2020]
    Nyckelord :Astrophysical Transients; Optical Transients; Microlensing; Variable Stars; Andromeda Galaxy; Forced Aperture Photometry; Time Domain Astronomy; Sky Survey; Zwicky Transient Facility; Machine Learning; Big Data Science;

    Sammanfattning : Study of the time variable sources and phenomena in Astrophysics provides us with important insights into the stellar evolution, galactic evolution, stellar population studies and cosmological studies such as number density of dark massive objects. Study of these sources and phenomena forms the basis of Time Domain surveys, where the telescopes while scanning the sky regularly for a period of time provides us with positional and temporal data of various Astrophysical sources and phenomena happening in the Universe. LÄS MER

  3. 2. Stars Eating Planets

    Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :John Wimarsson; [2020]
    Nyckelord :Earth and planetary astrophysics; planetary dynamics; planet-planet scattering; planet consumption; Physics and Astronomy;

    Sammanfattning : In a phase of instability during the dynamical evolution of some multiple exoplanetary systems, exchange of angular momentum and/or energy through gravitational interactions between planets will lead to alterations of their orbital properties. In some cases, planetary orbits end up crossing, which leads to close encounters between two planets. LÄS MER

  4. 3. Studie av implementering av Rogowski-spolar för växelströmsmätning i ABB:s optiska strömgivare

    Uppsats för yrkesexamina på grundnivå, Högskolan i Gävle/Elektronik

    Författare :Pontus Lindblad; [2020]
    Nyckelord :;

    Sammanfattning : ABB HVDC is a manufacturer of optical current transducers (OCTs) are used which are used to measure alternating currents in high voltage applications. The sensor used today is based on a current transformer and measures alternating currents between 100 and 4000 A. LÄS MER

  5. 4. An Electro-Optical and Fiber-optical Measurement System for HV Transients.

    Master-uppsats, Lunds universitet/Atomfysik

    Författare :Per Thomsen; [1986]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : .... LÄS MER