Results 81 to 90 of about 1,300,084 (347)
Propagation in 3D spiral-arm cosmic-ray source distribution models and secondary particle production using PICARD [PDF]
We study the impact of possible spiral-arm distributions of Galactic cosmic-ray sources on the flux of various cosmic-ray nuclei throughout our Galaxy. We investigate model cosmic-ray spectra at the nominal position of the sun and at different positions within the Galaxy.
arxiv +1 more source
Origin and Propagation of Extremely High Energy Cosmic Rays
Cosmic ray particles with energies in excess of 10**(20) eV have been detected. The sources as well as the physical mechanism(s) responsible for endowing cosmic ray particles with such enormous energies are unknown.
Affleck+269 more
core +1 more source
Arsenic trioxide transformed acute promyelocytic leukemia therapy and shows promise against HIV. A new method to solubilize the mineral realgar produces different arsenic species depleting the main arsenic target, nuclear PML protein, and retaining effects on leukemic and HIV reservoir cells, while minimizing off‐target damage.
Bojana Lucic+20 more
wiley +1 more source
An Assessment of the GLE Alert++ Warning System
Over the last years the Athens Cosmic Ray Group of the National & Kapodistrian University of Athens has implemented a warning tool called GLE Alert, which is a highly credible application that issues alerts when a ground level enhancement (GLE) starts ...
Helen Mavromichalaki+9 more
doaj +1 more source
The investigation of cosmic rays holds significant importance in the realm of particle physics, enabling us to expand our understanding beyond atomic confines.
V. V. Kizakke Covilakam+2 more
doaj +1 more source
Cosmic String Production Towards the End of Brane Inflation [PDF]
Towards the end of the brane inflationary epoch in the brane world, cosmic strings (but not texture, domain walls or monopoles) are copiously produced during brane collision. These cosmic strings are D$p$-branes with $(p-1)$ dimensions compactified. We elaborate on this prediction of the superstring theory description of the brane world. Using the data
arxiv +1 more source
The frequent dust storms and charged dust particles on Mars pose significant challenges to the power generation efficiency and service life of solar panels during exploration missions. This paper proposes a novel wind‐driven ternary four‐phase soft‐soft contact triboelectric nanogenerator (FPS‐TENG) for dust removal.
Fei Yang+6 more
wiley +1 more source
Cosmic internal symmetry in a finite universe [PDF]
Cosmic internal symmetry (COINS) relates cosmic vacuum, dark matter, baryons and radiation, in a finite universe. Evidence for COINS comes from the concordance data, including the WMAP data. COINS is behind 1)the cosmic coincidence, 2)the spatial flatness, 3)cosmic entropy, 4)initial amplitude of cosmic perturbations.
arxiv
High energy astroparticle physics for high school students
The questions about the origin and type of cosmic particles are not only fascinating for scientists in astrophysics, but also for young enthusiastic high school students.
Bretz, Hans-Peter+7 more
core +2 more sources