Blar i Publikasjoner fra CRIStin - NTNU på forfatter "Kachelriess, Michael"

Viser treff 1-20 av 32

    • A hot spot in the neutrino flux from the Cygnus loop SNR 

      Bouyahiaoui, Makarim; Kachelriess, Michael; Semikoz, Dimitry (Peer reviewed; Journal article, 2021)

    • A minimal model for extragalactic high-energy particles 

      Kachelriess, Michael; Kalashev, O.; Ostapchenko, S; Semikoz, DV (Journal article; Peer reviewed, 2017)
      We explain in a unified way the experimental data on ultrahigh energy cosmic rays (UHECR) and neutrinos, using a single source class and obeying limits on the extragalactic diffuse gamma-ray background (EGRB). If UHECRs ...

    • AAfrag: Interpolation routines for Monte Carlo results on secondary production in proton–proton, proton–nucleus and nucleus–nucleus interactions 

      Kachelriess, Michael; Moskalenko, Igor V.; Ostapchenko, Sergey (Journal article; Peer reviewed, 2019)
      We provide a compilation of predictions of the QGSJET-II-04m model for the production of secondary species (photons, neutrinos, electrons, positrons, and antinucleons) that are covering a wide range of energies of the beam ...

    • Alternative coalescence model for deuteron, tritium, helium-3 and their antinuclei 

      Kachelriess, Michael; Ostapchenko, Sergey; Tjemsland, Jonas (Peer reviewed; Journal article, 2020)
      Antideuteron and antihelium nuclei have been proposed as a detection channel for dark matter annihilations and decays in the Milky Way, due to the low astrophysical background expected. To estimate both the signal for ...

    • Anisotropic diffusion and the cosmic ray anisotropy 

      Kachelriess, Michael (Journal article; Peer reviewed, 2019)
      We argue that the diffusion of cosmic rays in the Galactic magnetic field has to be strongly anisotropic. As a result, the number of CR sources contributing to the local CR flux is strongly reduced. The CR density is ...

    • Constraints from the EBL 

      Kachelriess, Michael (Journal article; Peer reviewed, 2011)
      High energy particles interacting with the extragalactic photon background initiate electromagnetic pair cascades. I discuss here the resulting constraints on UHECR models, the flux of cosmogenic neutrinos and the extragalactic ...

    • Cosmic ray models 

      Kachelriess, Michael; Semikoz, DV (Journal article, 2019)
      We review progress in high-energy cosmic ray physics focusing on recent experimental results and models developed for their interpretation. Emphasis is put on the propagation of charged cosmic rays, covering the whole range ...

    • Cosmic-ray antinuclei as messengers of new physics: Status and outlook for the new decade 

      Von Doetinchem, Doetinchem; Perez, K.; Aramaki, T.; Baker, S.; Barwick, S.; Bird, R.; Boezio, M.; Boggs, S. E.; Cui, M.; Datta, A.; Donato, Fiorenza; Evoli, C.; Fabris, L.; Fabbietti, L.; Bueno, E. Ferronato; Fornengo, N.; Fuke, H.; Gerrity, C.; Coral, D. Gomez; Hailey, C. J.; Hooper, D.; Kachelriess, Michael; Korsmeier, M.; Kozai, M.; Lea, R.; Li, N.; Lowell, A.; Manghisoni, M.; Moskalenko, Igor V.; Munini, R.; Naskret, M.; Nelson, T.; Ng, K.C.Y.; Nozzoli, F.; Oliva, A.; Ong, R. A.; Osteria, G.; Pierog, T.; Poulin, Vivian; Profumo, S.; Pöschl, T.; Quinn, S.; Re, V.; Rogers, F.; Ryan, J.; Saffold, N.; Sakai, K.; Salati, P.; Schael, S.; Serksnyte, L.; Shukla, A.; Stoessl, A.; Tjemsland, Jørgen; Vannuccini, E.; Vecchi, M.; Winkler, M.W.; Wright, D.; Xiao, M.; Xu, W.; Yoshida, T.; Zampa, G.; Zuccon, P. (Peer reviewed; Journal article, 2020)
      The precise measurement of cosmic-ray antinuclei serves as an important means for identifying the nature of dark matter and other new astrophysical phenomena, and could be used with other cosmic-ray species to understand ...

    • Detecting ALP wiggles at TeV energies 

      Kachelriess, Michael; Tjemsland, Jonas (Peer reviewed; Journal article, 2024)
      Axions and axion-like-particles (ALPs) are characterised by their two-photon coupling, which entails so-called photon-ALP oscillations as photons propagate through a magnetic field. These oscillations lead to distinctive ...

    • Diffuse CR, neutrino and gamma-ray fluxes from AGNs 

      Giacinti, Gwenael; Kachelriess, Michael; Kalashev, Oleg; Neronov, Andrei; Semikoz, Dimitry (Peer reviewed; Journal article, 2016)
      We investigate how the extragalactic proton component derived within the ’escape model’ canbe explained by astrophysical sources. We find that the complete extragalactic proton spectrumcan be explained by a single source ...

    • Escape model for Galactic cosmic rays 

      Giacinti, Gwenael; Kachelriess, Michael; Semikoz, Dimitry (Peer reviewed; Journal article, 2016)
      We show that the cosmic ray (CR) knee can be entirely explained by energy-dependent CR leak-age from the Milky Way, with an excellent fit to all existing data. We test this hypothesis cal-culating the trajectories of ...

    • Extragalactic Cosmic Rays 

      Kachelriess, Michael (Peer reviewed; Journal article, 2022)
      I review the status of ultrahigh-energy cosmic ray (UHECR) physics. After introducing the main experimental results and summarizing possible intepretations, I discuss observational and theoretical constraints on the sources ...

    • Formation models for cosmic ray antinuclei 

      Kachelriess, Michael; Ostapchenko, Sergey; Tjemsland, Jonas (Peer reviewed; Journal article, 2022)
      The expected low background of light antinuclei, such as antideuteron and antihelium-3, makes them ideal detection channels for exotic physics, such as dark matter annihilations. At the same time, their small binding ...

    • Gamma-ray counterpart of the IceCube neutrinos 

      Kachelriess, Michael; Neronov, Andrii Yu.; Semikoz, Dimitry V. (Journal article; Peer reviewed, 2019)
      A γ-ray excess at high Galactic latitudes starting at energies 300 GeV was recently discovered in the data of the Fermi telescope. The multi-TeV γ-ray emission found has spectral characteristics at both low and high Galactic ...

    • High energy radiation from Centaurus A 

      Kachelriess, Michael; Ostapchenko, Sergey; Tomas, R (Journal article; Peer reviewed, 2009)
      We calculate, for the nearest active galactic nucleus (AGN), Centaurus A (Cen A), the flux of high-energy cosmic rays (CR) and of accompanying secondary photons and neutrinos expected from hadronic interactions in the ...

    • High-energy astrophysical neutrinos from interactions in the Local Bubble 

      Kachelriess, Michael; Semikoz, Dimitry; Bouyahiaoui, Makarim (Journal article; Peer reviewed, 2020)
      A signal of high-energy extraterrestrial neutrinos was discovered by the IceCube experiment [1]. Neutrinos are always produced together with gamma-rays, but the gamma-ray flux from extra- galactic sources cascade down to ...

    • High-energy Neutrinos from Galactic Superbubbles 

      Andersen, Karen-Johanne; Kachelriess, Michael; Semikoz, DV (Peer reviewed; Journal article, 2018)
      We study the propagation of cosmic rays (CRs) generated by sources residing inside superbubbles. We show that the enhanced magnetic field in the bubble wall leads to an increase in the interior CR density. Because of the ...

    • Inside out: unveiling local interstellar spectra of cosmic ray species 

      Boschini, M.J.; Della Torre, S.; Gervasi, M.; Grandi, D.; Johannesson, G.; Kachelriess, Michael; La Vacca, G.; Masi, N.; Moskalenko, I. V.; Orlando, E.; Ostapchenko, S. S.; Pensotti, S.; Porter, T. A.; Quadrani, L.; Rancoita, P. G.; Rozza, D.; Tacconi, M. (Journal article; Peer reviewed, 2018)
      Local interstellar spectra (LIS) for protons, helium and antiprotons are built using the most recent experimental results combined with state-of-the-art models for propagation in the Galaxy and Heliosphere. Two propagation ...

    • Meson production in air showers and the search for light exotic particles 

      Kachelriess, Michael; Tjemsland, Jonas (Peer reviewed; Journal article, 2021)
      Decays of mesons produced in cosmic ray induced air showers in Earth’s atmosphere can lead to a flux of light exotic particles which can be detected in underground experiments. We evaluate the energy spectra of the light ...

    • New Calculation of Secondary Antiprotons in Cosmic Rays 

      Moskalenko, Igor V.; Jóhannesson, Gudlaugur; Kachelriess, Michael; Orlando, E; Ostapchenko, Sergey; Porter, T.A. (Peer reviewed; Journal article, 2016)
      A dramatic increase in the accuracy and statistics of space-borne cosmic ray (CR) measurements has yielded several breakthroughs over the last several years. The most puzzling is the rise in the positron fraction above 10 ...