Results 31 to 40 of about 310,857 (281)
Physics of Cosmic Masers [PDF]
Symposium - International Astronomical Union, 1988 Natural masers, which emit powerful narrow-band radiation in molecular microwave lines, were discovered about 20 years ago. They draw the astrophysicist's attention in two ways: 1) as a unique physical phenomenon and 2) as very informative probes of physical conditions in those astrophysical objects (very young and very old stars) with which they are ...
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Publisher Correction: Measuring the ionisation fraction in a jet from a massive protostar
Nature Communications, 2019 An amendment to this paper has been published and can be accessed via a link at the top of the paper.
R. Fedriani +9 more
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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 +9 more
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Neutrinos And Big Bang Nucleosynthesis [PDF]
, 2012 According to the standard models of particle physics and cosmology, there should be a background of cosmic neutrinos in the present Universe, similar to the cosmic microwave photon background.
Steigman, Gary
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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
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New physics, the cosmic ray spectrum knee, and $pp$ cross section measurements
, 2010 We explore the possibility that a new physics interaction can provide an explanation for the knee just above $10^6$ GeV in the cosmic ray spectrum. We model the new physics modifications to the total proton-proton cross section with an incoherent term ...
A.B. Kaidalov +39 more
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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 +16 more
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Sun-to-Mud observations of the May and October storms of 2024: impacts on Ireland’s Space Weather
Journal of Space Weather and Space ClimateNear 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 +9 more
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Astrophysical origin of high-energy cosmic neutrinos
EPJ Web of Conferences, 2015 The origin of high-energy cosmic neutrinos is a new interesting mystery in astroparticle physics. The present data suggest interesting connection to cosmic-ray and/or gamma-ray sources.
Murase Kohta
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