搜索结果: 16-27 共查到“天体物理学 Cosmic Rays”相关记录27条 . 查询时间(0.067 秒)
The arrival directions of ultrahigh energy extensive air showers (EAS) by Yakutsk, AGASA and P. Auger data are considered. It is found that the arrival directions of EAS in the Yakutsk and AGASA data ...
We present the main results on the energy spectrum and compo-sition of the highest energy cosmic rays of energy exceeding 1018 eV obtained by the High Resolution Fly’s Eye and the Southern Auger Ob-se...
CRT: A numerical tool for propagating ultra-high energy cosmic rays through Galactic magnetic field models
Instrumentation and Methods for Astrophysics (astro-ph.IM)
2011/1/6
Deflection of ultra high energy cosmic rays (UHECRs) by the Galactic magnetic field (GMF) may be sufficiently strong to hinder identification of the UHECR source distribution. A common method for dete...
The Production of Ultra High Energy Cosmic Rays during the Early Epochs of Radio-loud AGN
High Energy Astrophysical Phenomena (astro-ph.HE)
2011/1/4
Powerful radio-loud active galactic nuclei (AGN) with large Mpc-scale jets have been theoretically motivated as emitters of high-energy cosmic rays. Recent radio observations have established a populo...
A Bayesian analysis of the 27 highest energy cosmic rays detected by the Pierre Auger Observatory
High Energy Astrophysical Phenomena (astro-ph.HE) High Energy Physics - Phenomenology (hep-ph)
2010/12/24
It is possible that ultra-high energy cosmic rays (UHECRs) are generated by active galactic nuclei (AGNs), but there is currently no conclusive evidence for this hypothesis. Several reports of correla...
Star Formation in Extreme Environments: The Effects of Cosmic Rays and Mechanical Heating
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/24
Molecular data of extreme environments, such as Arp 220, but also NGC 253, show evidence for extremely high cosmic ray (CR) rates (10^3-10^4 * Milky Way) and mechanical heating from supernova driven t...
Two-Step Acceleration Model of Cosmic Rays at Middle-Aged SNR
High Energy Astrophysical Phenomena (astro-ph.HE
2010/12/24
Recent gamma-ray observations of middle-aged supernova remnants revealed a mysterious broken power-law spectrum. Using three-dimensional magnetohydrodynamics simulations, we show that the interaction ...
The Search for the Sources of the Cosmic Rays One Century after their Discovery
High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/23
Despite their discovery potential touching a wide range of science, construction of TeV gamma-ray telescopes, Auger, IceCube and a suite of other particle astrophysics experiments has been largely mot...
Dark Matter detection via lepton cosmic rays
High Energy Astrophysical Phenomena (astro-ph.HE) Cosmology and Extragalactic Astrophysics (astro-ph.CO) High Energy Physics - Phenomenology (hep-ph)
2010/12/23
Recent observations of lepton cosmic rays, coming from the PAMELA and FERMI experiments, have pushed our understanding of the interstellar medium and cosmic rays sources to unprecedented levels.
Long term time variability of cosmic rays and possible relevance to the development of life on Earth
cosmic rays lightning evolution
2010/3/9
An analysis is made of the manner in which the cosmic ray intensity at Earth has varied over its existence and its possible relevance to both the origin and the evolution of life. Much of the analysis...
The spectrum of Cosmic Rays escaping from relativistic shocks
Cosmic Rays relativistic shocks
2010/3/8
We derive expressions for the time integrated spectrum of Cosmic Rays (CRs) that are accelerated in a decelerating relativistic shock wave and escape ahead of the shock. It is assumed that at any give...
Cosmic rays discerned in supernova remnants（图）
Cosmic rays supernova remnants Astrophysics
2006/11/28
November 20, 2006，MIT astronomers and a colleague have created an extraordinarily detailed image of the remains of an exploded star that provides new clues about the origins of cosmic rays, mysterious...