Blar i Publikasjoner fra CRIStin - NTNU på forfatter "Kachelriess, Michael"
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Nuclear coalescence and collective behaviour in small interacting systems
Kachelriess, Michael; Ostapchenko, Sergey; Tjemsland, Jonas (Peer reviewed; Journal article, 2022)The production of light nuclei in particle collisions can be described as the coalescence of nucleons into nuclei. In most coalescence models used in heavy ion collisions, the probability for coalescence is controlled ... -
Nuclear coalescence, collective behaviour and emission volume in small interacting systems
Kachelriess, Michael; Ostapchenko, Sergey (Peer reviewed; Journal article, 2022)The production of light nuclei and antinuclei in particle collisions can be described as the coalescence of final state nucleons that are close in phase space. In heavy ion collisions, it is usually assumed that the formation ... -
Photon-ALP oscillations at CTA energies
Kachelriess, Michael; Tjemsland, Jonas (Peer reviewed; Journal article, 2023)Axions and axion-like-particles (ALPs) are well motivated beyond the standard model particles that can explain a variety of unsolved problems in physics, such as the strong CP problem and the nature of dark matter. These ... -
Photon-ALP oscillations at TeV energies
Kachelriess, Michael; Tjemsland, Jonas (Peer reviewed; Journal article, 2022)Axion and axion-like-paricles (ALPs) are well motivated cold dark matter candidates. Nevertheless, an astoundingly huge parameter space remains unexplored despite much effort, ranging from fuzzy dark matter at ma∼10−22 eV ... -
Photon-ALP oscillations with ELMAG
Kachelriess, Michael; Tjemsland, Jonas (Peer reviewed; Journal article, 2022)ELMAG is a Monte Carlo program made to simulate electromagnetic cascades initiated by high-energy photons interacting with the extragalactic background light. Photons propagating in an external magnetic field may oscillate ... -
Reacceleration of charged dark matter
Kachelriess, Michael; Tjemsland, Jonas (Peer reviewed; Journal article, 2020)Charged particles scattering on moving inhomogenities of the magnetised interstellar medium can gain energy through the process of second-order Fermi acceleration. This energy gain depletes in turn the magnetic wave spectrum ... -
Revisiting cosmic ray antinuclei fluxes with a new coalescence model
Kachelriess, Michael; Ostapchenko, Sergey; Tjemsland, Jonas (Peer reviewed; Journal article, 2020)Antideuteron and antihelium nuclei have been proposed as promising detection channels for dark matter because of the low astrophysical backgrounds expected. To estimate both potential exotic contributions and their ... -
Superdense dark matter clumps
Dokuchaev, V; Berezinsky, V; Eroshenko, Y; Kachelriess, Michael; Solberg, Marius Aase (Journal article; Peer reviewed, 2011)We describe the cosmological scenario for the formation of superdense dark matter clumps. As an interesting particular example the case of superheavy neutralino as DMparticles is considered. The small-scale superdense ... -
Transition from Galactic to Extragalactic Cosmic Rays
Kachelriess, Michael (Journal article; Peer reviewed, 2019)The question at which energy the transition from Galactic to extragalactic cosmic rays takes place has been a long-standing conundrum in cosmic ray physics. In the past, the transition energy has been usually associated ... -
Using Convolutional Neural Networks for the Helicity Classification of Magnetic Fields
Pinciroli Vago, Nicolo' Oreste; Hameed, Ibrahim A.; Kachelriess, Michael (Journal article; Peer reviewed, 2021) -
Vela as the source of Galactic cosmic rays above 100 TeV
Bouyahiaoui, M.; Kachelriess, Michael; Semikoz, D. V. (Journal article, 2019)We model the contribution of the nearest young supernova remnant Vela to the local cosmic ray flux taking into account both the influence of the Local Superbubble and the effect of anisotropic diffusion. The magnetic field ... -
Vela as the Source of Galactic Cosmic Rays above 100 TeV
Kachelriess, Michael; Semikoz, Dmitri; Bouyahiaoui, Makarim (Peer reviewed; Journal article, 2020)We modeled the contribution of the young supernova remant Vela to the local cosmic rays taking into account the effect of the Local superBubble and an anistropic diffusion. We recovered the knee observed in the CR spectrum ...