Essays about: "Cosmic Rays"

Showing result 16 - 20 of 30 essays containing the words Cosmic Rays.

1. 16. Multiradionuclide evidence for an extreme solar proton event around 2610 BP

   University essay from Lunds universitet/Geologiska institutionen

   Author : Martin Paschal Ohare; [2017]
   Keywords : cosmic-rays; cosmogenic radionuclides; NGRIP; GRIP; solar proton event; SPE; Earth and Environmental Sciences;

   Abstract : Recently it has been confirmed that extreme solar proton events (SPE) can lead to significantly increased production of cosmogenic radionuclides (Mekhaldi et al. 2015). The evidence of these events can be recorded in tree rings (14C) and ice cores (10Be, 36Cl). READ MORE

3. 17. Simulation study of meteors for the Mini-EUSO experiment on the ISS

   University essay from KTH/Skolan för teknikvetenskap (SCI)

   Author : Petter Bühlman; John Sigvant; [2017]
   Keywords : ;

   Abstract : Mini-EUSO is an UV telescope developed by the JEM-EUSO collaboration and will be placed on the international space station in the end of 2017. Mini-EUSO is a precursor based on the same technology as the larger UV telescope known as JEM-EUSO. The primary objective of Mini-EUSO is to test the system to help to optimize the JEMEUSO instrument. READ MORE

4. 18. Characterization of monopole induced air showers using CORSIKA

   University essay from Uppsala universitet/Högenergifysik

   Author : Jan Rol; [2017]
   Keywords : monopole; cosmic ray; air shower;

   Abstract : In this thesis a characterization of air showers induced by magnetic monopoles is presented. Monopoles are predicted to exist and be accelerated to relativistic velocities. High energy monopoles traversing earth’s atmosphere continuously deposit energy, inducing an air shower. READ MORE

5. 19. Cosmic Dawn in a Fuzzy Universe : Constraining the nature of Dark Matterwith 21 cm Cosmology

   University essay from Stockholms universitet/Institutionen för astronomi

   Author : Olof Nebrin; [2017]
   Keywords : ;

   Abstract : The cold dark matter (CDM) paradigm underlying the standard CDM model of cosmology is successful on large scales but faces potential problems on small scales partly related to a seeming overproduction of dwarf galaxies. This could be alleviated in exotic dark matter models that suppresses small-scale structure formation. READ MORE

6. 20. Improved Event-mixing for Resonance Measurements

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Partikel- och kärnfysik

   Author : Mengke Cai; [2016]
   Keywords : Event mixing; Resonance; phi meson; Physics and Astronomy;

   Abstract : This report first analyzed the reason for the deviation of the event-mixing method in background estimation for resonance research, and one possible explanation is that the event-mixing method can not reproduce the specific angular distribution of produced particles caused by jet-effects. This assumption was checked by Monte-Carlo simulations with PYTHIA, and a certain method of correction called reweighing was proposed to improve the event-mixing method. READ MORE