63 citations · 187 across the 12 of their papers we have counts for
12 papers
Constraining the astrophysical origin of intergalactic magnetic fields
J. Tjemsland, M. Meyer, F. Vazza
High-energy photons can produce electron-positron pairs upon interacting with the extragalactic background light (EBL). These pairs will in turn be deflected by the intergalactic m…
Adiabatic Axion-Photon Mixing Near Neutron Stars
Jonas Tjemsland, Jamie McDonald, Samuel J. Witte
One of the promising new proposals to search for axions in astrophysical environments is to look for narrow radio lines produced from the resonant conversion of axion dark matter f…
Detecting ALP wiggles at TeV energies
M. Kachelriess, J. Tjemsland
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…
On the origin and the detection of characteristic axion wiggles in photon spectra
M. Kachelriess, J. Tjemsland
Photons propagating in an external magnetic field may oscillate into axions or axion-like particles (ALPs). Such oscillations will lead to characteristic features in the energy spe…
Comment on "Dark Matter Annihilation Can Produce a Detectable Antihelium Flux through Decays"
M. Kachelriess, S. Ostapchenko, J. Tjemsland
In a recent Letter, it was suggested that a previously neglected Standard Model process, namely, the production of antihelium-3 nuclei through decays of baryons can lead…
Meson production in air showers and the search for light exotic particles
M. Kachelriess, J. Tjemsland
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…
Formation of light (anti)nuclei
J. Tjemsland
The production mechanism of light nuclei, such as deuteron, helium-3, tritium and their antiparticles, has recently attracted an increased attention from the astroparticle and heav…
On nuclear coalescence in small interacting systems
M. Kachelriess, S. Ostapchenko, J. Tjemsland
The formation of light nuclei can be described as the coalescence of clusters of nucleons into nuclei. In the case of small interacting systems, such as dark matter and an…
Reacceleration of charged dark matter
M. Kachelriess, J. Tjemsland
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…
Revisiting cosmic ray antinuclei fluxes with a new coalescence model
M. Kachelriess, S. Ostapchenko, J. Tjemsland
Antideuteron and antihelium nuclei have been proposed as promising detection channels for dark matter because of the low astrophysical backgrounds expected. To estimate both potent…
Cosmic-ray Antinuclei as Messengers of New Physics: Status and Outlook for the New Decade
P. von Doetinchem, K. Perez, T. Aramaki +59
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 wit…
Alternative coalescence model for deuteron, tritium, helium-3 and their antinuclei
M. Kachelriess, S. Ostapchenko, J. Tjemsland
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 expe…