搜索结果: 46-60 共查到“知识库 理学 high energy”相关记录90条 . 查询时间(0.371 秒)
The metallicity of gamma-ray burst environments from high energy observations
Gamma-ray burst general – Gamma-ray burst individual GRB050904 – early Universe – dark ages
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2010/11/10
Context. Gamma-ray bursts (GRBs) and their early afterglows ionise their circumburst material. Only high-energy spectroscopy therefore, allows examination of the matter close to the burst itself. Soft...
On the Implications of Late Internal Dissipation for Shallow-Decay Afterglow Emission and Associated High-Energy Gamma-Ray Signals
gamma-rays burst general— gamma rays theory— radiation mechanisms non-thermal
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2010/11/10
The origin of the shallow-decay emission during early X-ray afterglows has been an open issue since the launch of the Swift satellite. One of the appealing models is the late internal dissipation mode...
How nucleons lose their identity at high energy
nucleons identity at high energy
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2011/1/7
We compute cross sections for incoherent di ractive J= production in lepton-nucleus deep in-elastic scattering.
Fermi Gamma-ray Space Telescope: High-Energy Results from the First Year
Fermi Gamma-ray Space Telescope High-Energy Results
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2010/11/9
The Fermi Gamma-ray Space Telescope (Fermi) was launched on June 11, 2008 and began its
first year sky survey on August 11, 2008. The Large Area Telescope (LAT), a wide field-ofview
pair-conversion ...
Progress towards fabrication of Th:229-doped high energy band-gap crystals for use as a solid-state optical frequency reference
Th:229-doped high energy band-gap crystals solid-state optical frequency
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2010/11/12
We have recently described a novel method for the construction of a solid-state optical frequency reference based on doping $^{229}$Th into high energy band-gap crystals. Since nuclear transitions ar...
Nucleon-Nucleon Correlations and Gribov Inelastic Shadowing in High Energy Collisions
short-range correlations Gribov inelastic shadowing high-energy collisions
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2011/1/7
The effects of nucleon-nucleon (NN) short range correlations (SRC) and Gribov inelastic
shadowing (IS) in high energy collisions are illustrated.
Fermi Gamma-ray Space Telescope: High-Energy Results from the First Year
Gamma-ray Space Telescope High-Energy Results First Year
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2011/1/5
The Fermi Gamma-ray Space Telescope (Fermi) was launched on June 11, 2008 and began its
first year sky survey on August 11, 2008. The Large Area Telescope (LAT), a wide field-ofview
pair-conversion ...
Ultra high energy cosmic rays: A review
gh energy cosmic rays review
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2010/11/12
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...
Jets, Mach cone, hot spots, ridges, harmonic flow, dihadron and $\gamma$-hadron correlation in high-energy heavy-ion collisions
Jets Mach cone hot spots ridges harmonic flow dihadron $\gamma$-hadron correlation high-energy heavy-ion collisions
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2011/1/7
Within the AMPT Monte Carlo model, hot spots in the initial transverse parton density are
shown to lead to harmonic flows which all contribute to dihadron azimuthal correlation.
Validation and Verification of MCNP6 Against Intermediate and High-Energy Experimental Data and Results by Other Codes
validation verification MCNP6 MCNPX CEM03.02 LAQGSM03.03
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2011/1/7
MCNP6, the latest and most advanced LANL transport code representing a recent merger of MCNP5 and MCNPX, has been Validated and Verified (V&V) against a variety of intermediate and high-energy experim...
Model of collimated jets with high energy particles
Model of collimated jets high energy particles
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2010/12/22
ContextThe increasing data set of precise observations of very energetic and collimated jets, with black hole (BH) as putative central engine, at different astrophysical scales and in various environm...
CRT: A numerical tool for propagating ultra-high energy cosmic rays through Galactic magnetic field models
Instrumentation and Methods for Astrophysics (astro-ph.IM)
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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...
Diffuse Hard X-ray Emission in Starburst Galaxies as Synchrotron from Very High Energy Electrons
High Energy Astrophysical Phenomena (astro-ph.HE) Cosmology and Extragalactic Astrophysics (astro-ph.CO)
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2011/1/5
The origin of the diffuse hard X-ray emission of starburst galaxies is a long-standing problem. We suggest that synchrotron emission of 10 - 100 TeV electrons and positrons can contribute significantl...
Analytic Solutions of Ultra-High Energy Cosmic Ray Nuclei Revisited
High Energy Astrophysical Phenomena (astro-ph.HE) High Energy Physics - Phenomenology (hep-ph)
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2011/1/5
The chemical composition of ultra-high energy cosmic rays is a key question in particle astrophysics. The measured composition, inferred from the elongation rates of cosmic ray showers, looks in gener...
The Production of Ultra High Energy Cosmic Rays during the Early Epochs of Radio-loud AGN
High Energy Astrophysical Phenomena (astro-ph.HE)
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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...