Results 11 to 20 of about 1,100 (175)

ABOUT EXPANSION OF TERRESTRIAL RADIOPHYSICAL METHODS FOR DETECTION OF ULTRA-HIGH-ENERGY COSMIC RAY

open access: yesOdessa Astronomical Publications, 2013
Low arrival density of the ultra-high- energy cosmic rays is one of the main obstacles of their experimental research. Overcoming this problem was based on the increase in the sensitive area of terrestrial facilities.
V. B. Kozhukhar   +2 more
doaj   +1 more source

Multi-Messenger Physics With the Pierre Auger Observatory

open access: yesFrontiers in Astronomy and Space Sciences, 2019
An overview of the multi-messenger capabilities of the Pierre Auger Observatory is presented. The techniques and performance of searching for Ultra-High Energy neutrinos, photons and neutrons are described. Some of the most relevant results are reviewed,
Karl-Heinz Kampert   +395 more
doaj   +1 more source

Search for ultra-high energy photons by complex data of the Yakutsk array [PDF]

open access: yesEPJ Web of Conferences, 2019
Complex analysis of the Yakutsk array data in order to find air showers produced by photons with energy ≥1018 eV is carried out. On the basis of simulations and experimental data, selection criteria are formed and air showers with characteristics close ...
Knurenko Stanislav, Petrov Igor
doaj   +1 more source

A Method to Estimate the Primary Mass of Ultrahigh-energy Cosmic Rays from Measurements of the Depth of the Shower Maximum and the Muon Content

open access: yesThe Astrophysical Journal, 2023
The origin and mass composition of ultrahigh-energy cosmic rays is one of the big open questions of modern physics. Estimating the mass of ultrahigh-energy cosmic rays always involves the comparison of data with simulations using hadronic interaction ...
Maximilian Stadelmaier
doaj   +1 more source

SLAC T-510: Radio emission from particle cascades in the presence of a magnetic field

open access: yesEPJ Web of Conferences, 2017
Cosmic ray induced particle cascades radiate in radio frequencies in the Earth’s atmosphere. Geomagnetic and Askaryan emission provide an effective way to detect ultra-high energy cosmic rays.
Mulrey Katharine
doaj   +1 more source

Collision of ultra-relativistic proton with strong magnetic field: Production of ultra-high energy photons and neutrinos

open access: yesPhysics Letters B, 2019
Proton-proton interaction and photo-hadronic interaction in cosmic accelerators are the two main channels for the production of cosmic ultra-high energy photons and neutrinos (TeV-PeV).
Ye-Fei Yuan, Xin-Yue Shi
doaj   +1 more source

Jet Lorentz Factor Constraint for GRB 221009A Based on the Optical Depth of the TeV Photons

open access: yesThe Astrophysical Journal Letters, 2023
The recent detection of teraelectronvolt (TeV) photons from the record-breaking gamma-ray burst GRB 221009A during its prompt phase poses challenges for constraining its Lorentz factor.
Duan-Yuan Gao, Yuan-Chuan Zou
doaj   +1 more source

Probing the Dipole of the Diffuse Gamma-Ray Background

open access: yesThe Astrophysical Journal Letters
We measured the dipole of the diffuse γ -ray background (DGB), identifying a highly significant time-independent signal coincidental with that of the Pierre Auger UHECR.
A. Kashlinsky   +2 more
doaj   +1 more source

Metallofullerenol Sc3N@C80(OH)18: A New Generation Radioprotector Protecting Human Erythrocytes Against Multiple Biochemical Damage Modes Upon Gamma Irradiation, Identifying It as a Scavenger of Short‐ and Long‐Lived Radicals

open access: yesAdvanced Healthcare Materials, EarlyView.
Metallofullerenol Sc3N@C80(OH)18 demonstrates strong radioprotective properties as a scavenger of both short‐ and long‐lived radicals. The study reveals protection of human erythrocytes from γ‐radiation–induced biochemical damage via post‐irradiation removal of primary and secondary reactive oxidants, supported by pulse radiolysis kinetics.
Jacek Grebowski   +6 more
wiley   +1 more source

Molecular Nanosolids Generation by Vapor Jet Desublimation

open access: yesAdvanced Materials, EarlyView.
A single‐step, solvent‐free approach to fabricate nanoparticles of small organic molecules is demonstrated, using a nitrogen‐propelled vapor jet, enabling tunable particle morphology and crystallinity. Pharmaceutical, flavoring, dyeing and electronics‐relevant molecules are used, demonstrating process generalizability.
Chao Huang   +11 more
wiley   +1 more source

Home - About - Disclaimer - Privacy