Results 31 to 40 of about 306,739 (333)

Ultra-high energy cosmic neutrinos [PDF]

, 2000
Several cosmologically distant astrophysical sources may produce ultra-high energy cosmic neutrinos (E > 10^6 GeV) of all flavors above the atmospheric neutrino background. I study the effects of vacuum neutrino flavor mixing on this cosmic neutrino flux.
Athar, H.
core   +3 more sources

Measuring the ionisation fraction in a jet from a massive protostar

Nature Communications, 2019
The ionisation fraction of protostellar jets is key to establish their true energetics. Here, the authors determine it in a jet from a high-mass young stellar object, using multi-wavelengths observations, confirming that the ionising mechanism giving ...
R. Fedriani, A. Caratti o Garatti, S. J. D. Purser, A. Sanna, J. C. Tan, R. Garcia-Lopez, T. P. Ray, D. Coffey, B. Stecklum, M. Hoare   +9 more
doaj   +1 more source

Cosmic Ray Physics with ACORDE at LHC [PDF]

, 2007
The use of large underground high-energy physics experiments, for comic ray studies, have been used, in the past, at CERN, in order to measure, precisely, the inclusive cosmic ray flux in the energy range from 2x10^10 - 2x10^12 eV.
, A Fernandez-Tellez, Adriani O, C Pagliarone, Fernandez A, Taylor C   +5 more
core   +2 more sources

Pilot study of ultra-high energy Cosmic rays through their Space – Atmospheric interactions – COSAT

EPJ Web of Conferences, 2015
One hundred years after the discovery of cosmic rays, the study of charged ultra-high energy cosmic rays remains a vital activity in fundamental physics.
Isar Paula Gina, Nicolae Doina
doaj   +1 more source

Solar Modulation of Galactic Cosmic Rays: Physics Challenges for AMS-02

, 2018
The Alpha Magnetic Spectrometer (AMS) is a new generation high-energy physics experiment installed on the International Space Station in May 2011 and operating continuously since then.
Tomassetti, Nicola
core   +1 more source

Recent results and perspectives on cosmology and fundamental physics from microwave surveys [PDF]

, 2015
Recent cosmic microwave background data in temperature and polarization have reached high precision in estimating all the parameters that describe the current so-called standard cosmological model.
Alighieri, Sperello Di Serego, Battistelli, Elia Stefano, Benetti, Micol, Burigana, Carlo, Cabass, Giovanni, De Bernardis, Paolo, Di Valentino, Eleonora, Gerbino, Martina, Giusarma, Elena, Gruppuso, Alessandro, Liguori, Michele, Masi, Silvia, Norgaard-Nielsen, Hans Ulrik, Rosati, Piero, Salvati, Laura, Trombetti, Tiziana, Vielva, Patricio   +16 more
core   +6 more sources

Solution Of Wheeler-De Witt Equation, Potential Well And Tunnel Effect

, 2007
This paper uses the relation of the cosmic scale factor and scalar field to solve Wheeler-DeWitt equation, gives the tunnel effect of the cosmic scale factor a and quantum potential well of scalar field, and makes it fit with the physics of cosmic ...
A. Linde, A. Linde, D.H. Zhang, D.L. Wiltshire, E.W. Kolb, Gang Weng, J.A. Wheeler, P.J.E. Peebles, Y.G. Shen, Yong-Chang Huang   +9 more
core   +1 more source

Extensive Air Showers and Accelerator Data - The NEEDS Workshop [PDF]

, 2002
Very high energy cosmic rays are typically studied by measuring extensive air showers formed by secondary particles produced in collisions with air nuclei.
Abazov, Abe, Abe, Agreev, Alves, Amos, Angelis, Antoni, Antoni, Antoni, Antoni, Avila, Barish, Barr, Catanesi, Cole, Drescher, Engel, Engel, Engel, Engel, Engel, Fowler, Gaisser, Haungs, Haungs, Heck, Hörandel, Hörandel, Jones, Jones, Kalmykov, Knapp, Matthiae, Ostapchenko, Ralph Engel, Rybicki, Seo, Solano, Swordy, Tano   +40 more
core   +3 more sources

Sun-to-Mud observations of the May and October storms of 2024: impacts on Ireland’s Space Weather

Journal of Space Weather and Space Climate
Near the peak of Solar Cycle 25 in 2024, Earth was impacted by two major solar eruptive events which triggered dramatic geomagnetic storm activity. In May 2024, multiple solar eruptive events generated the largest geomagnetic storm since the early 2000s;
Fogg Alexandra Ruth, Lucas Amy R., Hayes Laura A., Ivanov Serhii M., Walker Simon J., Malone-Leigh John, Murray Sophie A., Leahy Sadhbh R., Jackman Caitríona M., Gallagher Peter T.   +9 more
doaj   +1 more source

Testing Fundamental Physics with High-Energy Cosmic Rays [PDF]

, 2000
Cosmic rays may provide opportunities for probing fundamental physics. For example, ultra-high-energy cosmic rays might originate from the decays of metastable heavy particles, and astrophysical gamma rays can be used to test models of quantum gravity ...
Ellis, John
core   +1 more source