Results 71 to 80 of about 86,500 (230)

Do the LHAASO Galactic diffuse emission data require a contribution from unresolved sources? [PDF]

open access: yesEPJ Web of Conferences
The Large High-Altitude Air Shower Observatory (LHAASO) collaboration has recently measured the ultra-high energy gamma-ray diffuse emission (10 − 103 TeV) after masking the contribution of known sources.
Vecchiotti Vittoria   +6 more
doaj   +1 more source

Triggering Higgs vacuum decay

open access: yesJournal of High Energy Physics, 2023
The Standard Model Higgs potential seems unstable at field values h > h top ~ 1010 GeV. Vacuum decay can be triggered by N ~ 4π/λ ~ 1000 overlapped Higgs bosons with energy λ $$ \sqrt{\lambda } $$ h top. However, this configuration is stimulated by ultra-
Alessandro Strumia
doaj   +1 more source

Unveiling the Gannon Storm: How Ground‐Based Magnetometers Mapped Its Global Impact

open access: yesSpace Weather, Volume 23, Issue 6, June 2025.
Abstract The Gannon Storm, also known as the Mother's Day Storm of May 2024, ranks among the most intense geomagnetic disturbances of the space age, triggered by a powerful interplanetary coronal mass ejection. Leveraging data from over 100 globally distributed magnetic observatories, this study provides a detailed analysis of its ground‐level impacts,
Paola De Michelis, Giuseppe Consolini
wiley   +1 more source

The IceCube Neutrino Observatory III: Cosmic Rays [PDF]

open access: yesarXiv, 2011
Cosmic rays and related measurements: IceTop overview; IceTop calibration; Cosmic ray composition; Air shower measurements; Studies of cosmic ray muons; Studies of PeV gamma rays; Cosmic ray anisotropy; Forbush decrease; Submitted papers to the 32nd International Cosmic Ray Conference, Beijing 2011.
arxiv  

The past and future 20-years endeavor for discovering origins of ultra-high energy cosmic rays -- Rapporteur's summary of cosmic ray indirect -- [PDF]

open access: yesPoS (ICRC2023) 031
This article is the rapporteur's summary of the cosmic ray indirect sessions of the 38th International Cosmic Ray Conference in Nagoya, Japan. The rapporteur highlights cosmic ray indirect observatories around the world, and reviews a selection of the latest results regarding the cosmic ray energy spectrum, mass composition, anisotropy, hadronic ...
arxiv   +1 more source

Ultra High Energy Cosmic Rays and Neutrinos [PDF]

open access: yesNuclear and Particle Physics Proceedings, 2016
We discuss the production of ultra high energy neutrinos coming from the propagation of ultra high energy cosmic rays and in the framework of top-down models for the production of these extremely energetic particles. We show the importance of the detection of ultra high energy neutrinos that can be a fundamental diagnostic tool to solve the discrepancy
openaire   +3 more sources

Why Schonland Failed in His Search for Runaway Electrons From Thunderstorms

open access: yesJournal of Geophysical Research: Atmospheres, Volume 130, Issue 10, 28 May 2025.
Abstract B.F.J. Schonland, advised and encouraged by C.T.R. Wilson, made two unsuccessful searches for runaway electrons from thunderstorms in the 1930s. These findings stand in marked contrast with research results over the last decade and ironically set this field of research back many decades.
A. Chilingarian   +3 more
wiley   +1 more source

Cosmic Rays and Gamma Ray Bursts From Microblazars [PDF]

open access: yesarXiv, 1998
Highly relativistic jets from merger and accretion induced collapse of compact stellar objects, which may produce the cosmological gamma ray bursts (GRBs), are also very efficient and powerful cosmic ray accelerators. The expected luminosity, energy spectrum and chemical composition of cosmic rays from Galactic GRBs, most of which do not point in our ...
arxiv  

On the Potential Cosmogenic Origin of the Ultra-high-energy Event KM3-230213A

open access: yesThe Astrophysical Journal Letters
On 2023 February 13, the KM3NeT/ARCA telescope observed a track-like event compatible with a ultra-high-energy muon with an estimated energy of 120 PeV, produced by a neutrino with an even higher energy, making it the most energetic neutrino event ever ...
O. Adriani   +292 more
doaj   +1 more source

Orally Administered Functional Polyphenol‐Nanozyme‐Armored Probiotics for Enhanced Amelioration of Intestinal Inflammation and Microbiota Dysbiosis

open access: yesAdvanced Science, Volume 12, Issue 17, May 8, 2025.
This study presents a novel polyphenol‐nanozyme‐armored probiotic system (ECA@EcN) for enhanced treatment of inflammatory bowel disease (IBD). By integrating chitosan‐modified epigallocatechin gallate (EGCG‐CS) with gold nanozymes, the system effectively scavenges ROS, improves probiotic viability, and restores gut microbiota balance.
Yong Zhu   +12 more
wiley   +1 more source

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