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pro vyhledávání: '"Kachelriess M"'
Autor:
Kachelriess, M., Mikalsen, V.
We update and extend a previous model by Higdon and Lingenfelter for the longitudinal profile of the N\,II intensity in the Galactic plane. The model is based on four logarithmic spiral arms, to which features like the Local Arm and local sources are
Externí odkaz:
http://arxiv.org/abs/2409.07124
Autor:
Becker, C. T., Kachelriess, M.
The polarized synchrotron data of the northern C-BASS survey show a surprisingly low linear polarization fraction, $\Pi\simeq 3\%$, while the magnetic field polarization features coherent structures over rather large angular scales. The low polarizat
Externí odkaz:
http://arxiv.org/abs/2408.02554
The all-particle spectrum of cosmic rays measured at Earth has a knee-like feature around 4 PeV. A priori, it is not clear if this is a local feature specific to the Solar neighbourhood in the Milky Way, or if it is a generic property of the Galactic
Externí odkaz:
http://arxiv.org/abs/2407.11911
Autor:
Kachelriess, M., Nødtvedt, M. P.
It has been suggested to use seismic detectors on the Moon as a tool to search for gravitational waves in an intermediate frequency range between mHz and Hz. Employing three different spherically symmetric models for the lunar interior, we investigat
Externí odkaz:
http://arxiv.org/abs/2312.11665
Autor:
Kachelriess, M., Tjemsland, J.
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 signatures in the energy spec
Externí odkaz:
http://arxiv.org/abs/2305.03604
Light (anti-) nuclei are a powerful tool both in collider physics and astrophysics. In searches for new and exotic physics, the expected small astrophysical backgrounds at low energies make these antinuclei ideal probes for, e.g., dark matter. At the
Externí odkaz:
http://arxiv.org/abs/2303.08437
Autor:
Kachelrieß M.
Publikováno v:
EPJ Web of Conferences, Vol 210, p 04003 (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 with one of the evident featur
Externí odkaz:
https://doaj.org/article/00bf75bb7b3643cba944bf3d0ae38364
Light antinuclei, like antideuteron and antihelium-3, are ideal probes for new, exotic physics because their astrophysical backgrounds are suppressed at low energies. In order to exploit fully the inherent discovery potential of light antinuclei, a r
Externí odkaz:
http://arxiv.org/abs/2206.00998
Autor:
Kachelriess, M.
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 of UHECRs. I comment also b
Externí odkaz:
http://arxiv.org/abs/2201.04535
Autor:
Kachelriess, M., Tjemsland, J.
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 spectrum of high-energy photons from astrophysical sources that can be us
Externí odkaz:
http://arxiv.org/abs/2111.08303