events - Page 47
Er alle kompetansemål like viktige? - Vurdering av kvalitativ kompetanse i Fysikk 2 i videregående skole
MT2 as a variable for discovering supersymmetry
DCE-MRI for assessment of hypoxia-induced prostate cancer aggressiveness
A first principles study of lattice thermal conductivity in XNiSn (X = Ti, Zr, Hf) half-Heusler alloys for thermoelectric applications
Light Conversion Materials for Solar Cell Applications - Synthesis and Characterisation of Lanthanide Fluoride Thin Films by Atomic Layer Deposition
Single ASIC NFC Sensor Tag
Zinc vacancy–donor defect complexes in crystalline Zinc Oxide.
A hybrid density functional study.
Pair Production of Leptophilic Dark matter at Next-To-Leading Order
Sounding Rocket Telemetry Compression
Topological Superconductivity and Majorana Fermions
Diffusion of potential p-type dopants in monocrystalline ZnO
Struktur-egenskapsrelasjoner til perovskittoksidene LaNi1-xMxO3M=Rh, Pt og deres funksjon som katalysator for dekomponering av lystgass.
Astronomi i videregående opplæring
Well defined nanoparticles through controlled non-equilibrium micellization of block copolymers
Modeling Atrial Fibrillation - Exploring the Koivumäki Human Atrial Cell Model
Estimation of Metabolic Oxygen Consumption From Optical Measurements in Cortex
Gamma ray signals from annihilating dark matter in curved spacetime
Structural- and Compositional Investigations of Grain Boundaries in Y-Doped BaZrO3
Quantum Mechanical Modelling and Optical Spectroscopy of Zn(Mg,Cd)O Heterostructures
Scanning Probe Microscopy - Method Development and Applications to Zinc Oxide Structures
"Application of Compressed Sensing to Reconstruction of 3-D Charge Collection Efficiency in Silicon Sensors"
Ion Implantation of ZnO by the Group IV elements Si and Ge: Doping, defects and nanocrystallization
A Method for Describing Ocean Environments for Ship Design
Håvard Tveit Ihle, ITA
There is a growing interest in how the particle nature of dark matter (DM) can affect cosmological and astrophysical observables. Kinetic decoupling of DM from the heat bath in the early universe, e.g., leads to a pronounced cutoff in the matter power spectrum. Traditional WIMP models for DM (like SUSY) typically result in MeV-scale kinetic decoupling, corresponding to a cutoff at unobservably small scales. Here, we provide instead a classification of DM models that result in keV-scale kinetic decoupling. Such models result in a potentially observable cutoff in the power spectrum, at the scale of dwarf-galaxies and hence possibly addressing the missing satellite problem. The main focus of the talk will be on the decoupling process of DM in the early universe, implications for model building, and some examples from our work.
(The slides are now available)
Robert Wagner, University of Stockholm
The past decade has seen a dramatic improvement in the quality of data available at high-energy gamma-rays. The all-sky LAT instrument on board of the Fermi satellite has revealed about 2,000 sources in the sky at the 100 MeV – 100 GeV band, and almost 200 sources have been detected at even higher energies, E>100 GeV, gamma rays energies by pointed, ground-based Imaging Air Cherenkov Telescopes.
These so-called very high-energy (VHE) gamma rays gamma rays cannot be produced in thermal processes, but are produced by interactions of high-energy particles. Gamma rays thus trace populations of such particles and enable the cosmic particle accelerators to be imaged and studied. Gamma-ray emitting particle accelerators are ubiquitous in the Galaxy and beyond; they include a variety of galactic and extragalactic objects. Details of the acceleration mechanisms as well as the role high-energy particles play in the evolution of star forming systems and galaxies remain to be fully understood. Gamma-rays can also be used as probes of the physics of the early universe, of fundamental physics, and could be products of dark matter annihilation in some cold dark matter realizations.
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(The slides will be available after the talk)