Cosmic rays & astroparticles is a research area focused on high-energy particles of extraterrestrial origin and their role in fundamental physics and astrophysics. It encompasses experimental and theoretical studies of primary cosmic rays (protons, nuclei, electrons), secondary air-shower particles, gamma rays, neutrinos, and other non-photonic messengers that probe extreme environments such as supernova remnants, active galactic nuclei, and compact objects. The field integrates particle detection techniques, high-energy astrophysics, plasma and magnetic field modeling, and multi-messenger observations to investigate particle acceleration mechanisms, propagation in interstellar and intergalactic media, and potential signatures of new physics beyond the Standard Model.
Last week, at the biennial ICHEP conference, the AMBER experiment presented results from its first data-taking period. Taken in 2023, these results show preliminary plots of the antiproton's production cross section—the probability ...
General Physics
Aug 5, 2024
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Neutrinos have a quantum mechanical property called "flavor." This flavor can transform as neutrinos move through space. A major challenge is to keep track of both the physical movement of the neutrinos and their change of ...
General Physics
Jul 12, 2024
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The space environment is harsh and full of extreme radiation. Scientists designing spacecraft and satellites need materials that can withstand these conditions.
General Physics
Jun 24, 2024
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Approximately 80% of the matter in the universe is predicted to be so-called "dark matter," which does not emit, reflect, or absorb light and thus cannot be directly detected using conventional experimental techniques.
In a new study published inNature Physics, scientists at the MAJORANA Collaboration have tested the stringency of charge conservation and Pauli's exclusion principles using underground detectors. Alessio Porcelli has published ...
Researchers at the IceCube Neutrino Observatory in Antarctica have found seven signals that could potentially indicate tau neutrinos—which are famously hard to detect—from astrophysical objects.
Researchers at the Large High Altitude Air Shower Observatory (LHAASO) have accurately measured the cosmic ray all-particle energy spectrum and the mean logarithmic mass in the range of 0.3–30 peta-electronvolts (PeV). They ...
General Physics
Apr 8, 2024
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Several thousand sensors distributed over a square kilometer near the South Pole are tasked with answering one of the large outstanding questions in physics: does quantum gravity exist? The sensors monitor neutrinos—particles ...
General Physics
Mar 26, 2024
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The IceCube Neutrino Observatory, operated by the University of Wisconsin-Madison (UW-M), located at the Amundsen–Scott South Pole Station in Antarctica, is one of the most ambitious neutrino observatories in the world. Behind ...
General Physics
Dec 18, 2023
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