Essays about: "gamma-ray"

Showing result 21 - 25 of 81 essays containing the word gamma-ray.

  1. 21. Gamma-ray emission and Synchrotron Self-Compton modelling of the macrolensed Quasar PKS 1830-211

    University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Author : Pierre Ohlsson; [2020]
    Keywords : Gamma-ray;

    Abstract : The objective of this thesis is to retrieve Light Curves, Spectral Models, Spectral Maps, and to geta Spectral Energy Distribution (SED) plot, for the source of PKS1830-211. Finally, also to do amodelling of the whole SED coming from the source with the JetSet software. Which will then becompared to a previous modelling done by A. A. READ MORE

  3. 22. Investigating the Time Evolution of X-Ray Absorption in Gamma-Ray Bursts

    University essay from KTH/Fysik

    Author : Hannah Deprez; [2020]
    Keywords : ;

    Abstract : .... READ MORE

  4. 23. AGN Candidates for High Energy Neutrino Emission in IceCube

    University essay from Uppsala universitet/Högenergifysik

    Author : Roisín O'Rourke Brogan; [2020]
    Keywords : active galactic nuclei; agn; high energy physics; neutrinos; IceCube; blazars; jets; gamma emission;

    Abstract : Since the construction of the IceCube Neutrino Observatory was completed in 2010, many amazing discoveries have been made in the field of neutrino physics. Recently a neutrino event has been linked to an blazar-type active galactic nucleus source, bringing us one step closer to understanding the production of high-energy extragalactic neutrinos and ushering in a new era of multimessenger astronomy. READ MORE

  5. 24. Dating lake bottom sediment by searching for 210Pb using gamma-ray spectroscopy

    University essay from Uppsala universitet/Tillämpad kärnfysik

    Author : William Bäckström; [2020]
    Keywords : sediment dating; dating; spectroscopy; gamma-ray; nuclear; lead; HPGe detector; sedimentation; sedimentation rate; attenuation; migration; limnologist; least squares;

    Abstract : In a collaboration with limnologists at Uppsala University a planar HPGe detector has been used to find 210Pb in lake bottom sediment in hopes of getting an estimation for the sedimentation rate. Using a least squares fit to the data, the sedimentation rate was calculated to 0.08 ± 0. READ MORE

  6. 25. Gamma-ray emission study and multi-wavelength modeling of the FSRQ 3C 454.3

    University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Author : Amy Beijer; [2020]
    Keywords : Gamma-ray emission; multi-wavelength modeling; FSRQ 3C 454.3;

    Abstract : This thesis treats the findings and current theories of the active galactic nuclei 3454.3. It mainly aims to describe the behavior of the specific source in the gamma-ray energy band as recorded by the Fermi-LAT satellite. Using NASA’s computational tools and all recorded data the variability of the source was assessed. READ MORE