Search for dissertations about: "NATURAL SCIENCES Physics Astronomy and astrophysics High energy astrophysics"

Showing result 11 - 15 of 37 swedish dissertations containing the words NATURAL SCIENCES Physics Astronomy and astrophysics High energy astrophysics.

  2. 11. Exploring the potentials of next-generation, wavelength-shifting, optical sensors for IceCube

    Author : Jakob Beise; Erin O'Sullivan; Christian Ohm; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Neutrino Physics; Astroparticle Physics; Supernovae; Wavelength Shifters; IceCube;

    Abstract : The IceCube Neutrino Observatory has sensitivity to MeV electron antineutrinos from core-collapse supernovae through an excess of the detection rate over the background. Wavelength-shifting sensors have the potential to greatly increase photon collection making it a promising candidate for improving the measurement of the supernova neutrino light curve in IceCube-Gen2. READ MORE

  4. 12. A Search for Dark Matter Lines with H.E.S.S. II

    Author : Knut Dundas Morå; Jan Conrad; Christian Farnier; Christian Walck; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Dark Matter; Cherenkov Telescopes; Indirect Detection; fysik; Physics;

    Abstract : Most of the matter in the universe, ~80% is thought to be dark matter- particles that have small or no interactions with standard model particles. Dark matter is an integral part of the current understanding of cosmology, and leaves signs in the movements of stars and galaxies, as well as the Cosmic Microwave Background. READ MORE

  5. 13. Kilonova signatures and observations with Zwicky Transient Facility

    Author : Ana Sagués Carracedo; Ariel Goobar; Chad Finley; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; kilonovae - neutron stars - gravitational waves; High Energy Physics; högenergifysik; Physics; fysik;

    Abstract : On 17 August 2017, the advanced LIGO and Virgo collaboration detected the first gravitational wave event produced by the merger of a pair of inspiraling binary neutron stars (BNS). This event, named GW170817, was associated with a short gamma-ray burst and the kilonova (KN) AT2017gfo that was followed-up over the following days and weeks over the electromagnetic spectrum from ultraviolet to near infrared frequencies. READ MORE

  6. 14. Cosmic rays and shock physics in gamma-ray bursts

    Author : Filip Samuelsson; Felix Ryde; Robert Mochkovitch; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; astrophysics; gamma-ray bursts; cosmic rays; radiation-mediated shocks; Atomic; Subatomic and Astrophysics; Atomär fysik; subatomär fysik och astrofysik;

    Abstract : Gamma-ray bursts (GRBs) are the most luminous events in the known universe. Due to their tremendous energy output, they serve as laboratories of physics far beyond anything that we can hope to achieve in terrestrial experiments. READ MORE

  7. 15. Bright Needles in a Haystack : A Search for Magnetic Monopoles Using the IceCube Neutrino Observatory

    Author : Alexander Burgman; Carlos Pérez de los Heros; Olga Botner; Allan Hallgren; David Milstead; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; magnetic monopole; IceCube; astroparticle physics; neutrino telescope; Fysik med inriktning mot elementarpartikelfysik; Physics with specialization in Elementary Particle Physics;

    Abstract : The IceCube Neutrino Observatory at the geographic South Pole is designed to detect the light produced by the daughter-particles of in-ice neutrino-nucleon interactions, using one cubic kilometer of ice instrumented with more than 5000 optical sensors.Magnetic monopoles are hypothetical particles with non-zero magnetic charge, predicted to exist in many extensions of the Standard Model of particle physics. READ MORE