Sökning: "Cosmic Radiation"

Visar resultat 26 - 30 av 45 avhandlingar innehållade orden Cosmic Radiation.

  1. 26. The Anticoincidence System of the PAMELA Satellite Experiment : Design of the data acquisition system and performance studies

    Författare :Johan Lundquist; Mark Pearce; Tony Weidberg; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PAMELA; satellites; astroparticle physics; electronics; anticoincidence system; trigger system; Astroparticle physics; Astropartikelfysik;

    Sammanfattning : PAMELA is a satellite-borne cosmic ray experiment. Its primary scientific objective is to study the antiproton and positron components of the cosmic radiation. This will be done with unprecedented statistics over a wide energy range (~10MeV to ~100GeV). LÄS MER

  3. 27. The Anticoincidence Shield of the PAMELA Satellite Experiment

    Författare :Silvio Orsi; KTH; []
    Nyckelord :astrophysics; particle physics; antimatter; organic scintillators;

    Sammanfattning : The PAMELA space experiment is scheduled for launch towards the end of 2004 on-board a Russian Resurs DK1 satellite, orbiting Earth at an altitude of 300– 600 km. The main scientific goal is a study of the antimatter component of the cosmic radiation. The semipolar orbit (70. LÄS MER

  4. 28. Search for Neutrinos from Gamma-ray Bursts using the IceCube Neutrino Observatory

    Författare :Kunal Avinash Deoskar; Chad Finley; Klas Hultqvist; Paschal Coyle; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Gamma-ray bursts; neutrinos; IceCube Neutrino Observatory; Physics; fysik;

    Sammanfattning : Gamma ray bursts (GRBs) are short bursts of high energy γ-radiation and are among some of the most energetic phenomena in the universe. GRBs have three distinct emission phases: the prompt phase with high-energy γ-rays, the precursor phase which is the time interval before the prompt phase and is reported to have an additional smaller burst for some GRBs, and the afterglow phase which is the time interval after the prompt phase with observations for electromagnetic radiation across a large wavelength range reported for many GRBs. LÄS MER

  5. 29. Type Ia Supernova Cosmology : Quantitative Spectral Analysis

    Författare :Gastón Folatelli; Ariel Goobar; Enrico Cappellaro; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Supernova; Cosmology; Spectroscopy; Physics; Fysik;

    Sammanfattning : Type Ia supernovae have been successfully used as standardized candles to study the expansion history of the Universe. In the past few years, these studies led to the exciting result of an accelerated expansion caused by the repelling action of some sort of dark energy. LÄS MER

  7. 30. Molecular Astrophysics in Star-forming Regions with the Odin Satellite

    Författare :Carina Persson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The interstellar medium is the cradle of life, stars and planets in the evolving Universe. Stars are born deep inside cold and dark molecular clouds, and affect the dynamical conditions in local regions by powerful winds, outflows, and by supernova explosions. LÄS MER