Results 31 to 40 of about 2,991,307 (240)

K-capture cosmic ray secondaries and reacceleration [PDF]

Advances in Space Research, 2001
We have investigated the effect of reacceleration on interstellar flux of K-capture secondaries V-49 and Cr-51. Several isotopic ratios for these two isotopes are calculated using the galactic diffusion model with and without distributed reacceleration.
F.C. Jones, A. Lukasiak, V.S. Ptuskin, W.R. Webber   +3 more
openaire   +1 more source

Nearby SNR: A Possible Common Origin of Multi-messenger Anomalies in the Spectra, Ratios, and Anisotropy of Cosmic Rays

The Astrophysical Journal, 2023
Multi-messenger anomalies, including spectral hardening or excess of nuclei, leptons, ratios of $\bar{p}/p$ and B/C, and anisotropic reversal, have been observed in past years.
Bing-Qiang Qiao, Yi-Qing Guo, Wei Liu, Xiao-Jun Bi   +3 more
doaj   +1 more source

Secondary cosmic rays in the NUCLEON space experiment [PDF]

Advances in Space Research, 2019
The NUCLEON space observatory is a direct cosmic ray spectrometer designed to study cosmic ray nuclei with $Z=1-30$ at energies $10^{12}-10^{15}$ eV. It was launched as an additional payload onboard the Russian Resource-P No. 2 satellite. In this work B/C, N/O and subFe/Fe ratios are presented.
Grebenyuk, V., Karmanov, D., Kovalev, I., Kudryashov, I., Kurganov, A., Panov, A., Podorozhny, D., Tkachenko, A., Tkachev, L., Turundaevskiy, A., Vasiliev, O., Voronin, A.   +11 more
openaire   +2 more sources

Galactic cosmic ray modulation near the heliospheric current sheet [PDF]

, 2014
Galactic cosmic rays (GCRs) are modulated by the heliospheric magnetic field (HMF) both over decadal time scales (due to long-term, global HMF variations), and over time scales of a few hours (associated with solar wind structures such as coronal mass ...
Owens, M. J., Thomas, S. R., Thomas, SR, Scott, C. J., Lockwood, M, Scott, CJ, Lockwood, Mike, Owens, MJ   +7 more
core   +1 more source

The mass composition of cosmic rays measured with LOFAR

EPJ Web of Conferences, 2017
High-energy cosmic rays, impinging on the atmosphere of the Earth initiate cascades of secondary particles, the extensive air showers. The electrons and positrons in the air shower emit electromagnetic radiation.
Hörandel Jörg R., Bonardi A., Buitink S., Corstanje A., Falcke H., Mitra P., Mulrey K., Nelles A., Rachen J.P., Rossetto L., Schellart P., Scholten O., ter Veen S., Thoudam S., Trinh T.N.G., Winchen T.   +15 more
doaj   +1 more source

Possible Counterpart Signal of the Fermi Bubbles at the Cosmic-Ray Positrons

The Astrophysical Journal, 2023
The inner Galaxy has hosted cosmic-ray burst events, including those responsible for the gamma-ray Fermi bubbles and the eROSITA bubbles in X-rays. In this work, we study the Alpha Magnetic Spectrometer positron fraction and find three features around 12,
Ilias Cholis, Iason Krommydas
doaj   +1 more source

Explaining the Hardening Structures of Helium Spectrum and Boron to Carbon Ratio through Different Propagation Models

Galaxies, 2023
Recently, a series of high-precision measurements by various experiments show that cosmic ray nuclei spectra begin to harden at ∼200 GV and the boron-to-carbon (B/C) ratio has a similar trend around the same energy.
Qing Luo, Jie Feng, Pak-Hin Thomas Tam
doaj   +1 more source

NMDB@Athens

, 2023
This volume documents the papers presented at the hybrid symposium on cosmic ray studies with neutron monitors in Athens in September 2022. The contributions are dedicated to six topics: cosmic rays in the heliosphere, GLE analysis and space weather ...

core   +1 more source

Changes in cloud cover associated with Forbush decreases of galactic cosmic rays [PDF]

, 2001
The results of a study to quantify the relationship between cloud cover and short-term Forbush decreases (FD) of galactic cosmic ray flux are presented. Using an extensive record of global satellite-derived cloud products from the International Satellite
Kniveton, DR, Martin C. Todd, Todd, MC, Martin Todd (4462747), Dominic Kniveton (4461616), Dominic R. Kniveton   +5 more
core   +1 more source

A mobile complex to record several secondary cosmic rays components [PDF]

E3S Web of Conferences, 2019
The paper presents a research of the different components variations of the secondary cosmic rays (SCR). These are being monitored at the Cosmic Rays Laboratory, PGI, Apatity, using an integrated set based on the SCR basic components detectors.
Mikhalko Evgenya, Maurchev Evgeny
doaj   +1 more source