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Particle astrophysics is the study of fundamental particles travelling through space, particularly those that reach the Earth. These cosmic rays include photons, protons, alpha particles and neutrinos. Some of these decay to other particles in the atmosphere, while neutrinos can pass through the entire Earth without being absorbed.
The demand to image large biological samples at high resolution requires improvement in current light-sheet microscopy tools. Here, the authors present an improved, benchtop mesoSPIM with a significantly increased field-of-view, improved resolution and improved throughput.
Interactions of atmospheric neutrinos with quantum-gravity-induced fluctuations of the metric of spacetime would lead to decoherence. The IceCube Collaboration constrains such interactions with atmospheric neutrinos.
Hypothetical dark photon (DP) dark matter (DM) and axion DM might resonantly convert into electromagnetic waves in the solar corona. Here, the authors show upper limits on the axion-photon coupling and on the kinetic mixing coupling of DPDM and photon within 30-80 MHz in the solar corona radio observations.
The observation by the IceCube Neutrino Observatory of high-energy neutrinos from the Galactic plane indicates that the Milky Way is deficient in neutrinos, most probably because it has not hosted an active source for the past few tens of kiloyears.
A South China Sea expedition in 2021 identified a 3.5-km-deep site close to the Equator for a next-generation neutrino telescope: TRIDENT. A large array of advanced detectors will be arrayed on the seabed to probe fundamental physics and explore the extreme Universe.
A recent survey suggests that reducing the number of meetings and conferences is a viable way to address concerns about the effectiveness of the modern scientific collaboration process, its effects on the environment and the well-being of the community.
In 2023, the IceCube Neutrino Observatory discovered high-energy neutrinos from the Milky Way, an important clue towards understanding the origin of high-energy cosmic rays.
Astroparticle physicists met for the 38th edition of the biennial series of the International Cosmic Ray Conference (ICRC2023), which took place in late July in Nagoya, Japan.
The quantization of spacetime could be revealed indirectly through its imprint on the propagation of particles. An analysis combining data from the IceCube Neutrino Observatory and the Fermi Gamma-ray Space Telescope shows preliminary statistical evidence of such a quantum-spacetime effect.
