搜索结果: 1-15 共查到“知识库 宇宙线物理学”相关记录259条 . 查询时间(6.969 秒)
2022年12月21日，高海拔宇宙线观测站LHAASO合作组利用超高能（>100TeV）伽马辐射研究暗物质物理，取得重要进展，研究成果“Constraints on heavy decaying dark matter from 570 days of LHAASO observations”发表于《物理评论快报》（Physical Review Letters），并被杂志选为高亮论文，Ameri...
Superluminal Spin-1/2 Particles are Left-Handed: From the Gordon Decomposition to the Suppression of Right-Handed States
Superluminal Spin-1/2 Particles Gordon Decomposition Suppression of Right-Handed States High Energy Physics Phenomenology
2012/5/17
Superluminal spin-1/2 particles are analyzed under the assumption that the equation of motion is compatible with Lorentz invariance (tachyonic particles). It is found that tachyonic spin-1/2 particles...
Tachyonic Field Theory and Neutrino Mass Running
Tachyonic Field Theory Neutrino Mass Running High Energy Physics Phenomenology
2012/5/17
In this paper three things are done. (i) We investigate the analogues of Cerenkov radiation for the decay of a superluminal neutrino and calculate the Cerenkov angles for the emission of a photon thro...
Knot Universes in Bianchi Type I Cosmology
Knot Universes Bianchi Type I Cosmology General Physics
2012/4/19
We investigate the trefoil and figure-eight knot universes from Bianchi-type I cosmology. In particular, we construct several concrete models describing the knot universes related to the cyclic univer...
在没有太阳能辐射作用的情况下，地球旋涡体气体包压层次的特征是，从地球到旋涡体边缘，大气层的温度、密度、压强基本上都由高到低、由大到小按顺序排列递减。在太阳能辐射的作用下，地球旋涡体气体包压层次发生了变化，太阳能的强烈辐射在一定程度上改变了包压地球的大气层次的物质特性，大气层局部地区的温度发生了一些反常的现象，但并没有从整体上改变地球大气的冷热气体对抗的基础，反而在一定的程度上加强了这种冷热气对抗的...
Fractional Action Cosmology: Some Dark Energy Models in Emergent, Logamediate and Intermediate Scenarios of the Universe
Fractional Action Cosmology Dark Energy Model Emergent Logamediate Intermediate Scenarios of the Universe
2011/8/2
Abstract: In the framework of Fractional Action Cosmology, we have reconstructed the scalar potentials and scalar fields, namely, quintessence, phantom, tachyon, k-essence, DBI-essence, Hessence, dila...
Did Edwin Hubble plagiarize?
Edwin Hubble plagiarize Lemaitre's earlier theoretical discovery the expansion of the universe
2011/8/2
Abstract: Recently Block published an astro-ph [arXiv:1106.3928 (2011)] insinuating that Hubble censored a prior publication of his famous and seminal discovery of the expansion of the universe. This ...
Can accretion disk properties observationally distinguish black holes from naked singularities?
accretion disk properties black holes naked singularities
2010/12/20
Naked singularities are hypothetical astrophysical objects, characterized by a gravitational sin-gularity without an event horizon. Penrose has proposed a conjecture, according to which there exists a...
Cosmic alignment of the aether
Cosmic alignment aether
2010/12/20
In Einstein-aether theory and Horava gravity, a timelike unit vector is coupled to the spacetime metric. It has previously been shown that in an exponentially expanding homogeneous, isotropic backgrou...
Studies of the performance of the ATLAS detector using cosmic-ray muons
Studies performance ATLAS detector cosmic-ray muons
2011/1/6
Muons from cosmic-ray interactions in the atmosphere provide a high-statistics source of particles that can be used to study the performance and calibration of the ATLAS detector.
In Einstein-aether theory and Horava gravity, a timelike unit vector is coupled to the spacetime metric. It has previously been shown that in an exponentially expanding homogeneous, isotropic backgrou...
Quantum evaporation of Callen-Giddings-Harvey-Strominger (CGHS) black holes is analyzed in the mean field approximation. The resulting semi-classical theory incorporates back reaction. Detailed analyt...
We study the evolution of matter density perturbations in Galileon cosmology where the late-time cosmic acceleration can be realized by a field kinetic energy.
One-loop quantum gravity repulsion in the early Universe
One-loop quantum gravity the early Universe
2010/12/27
Perturbative quantum gravity is used to compute the lowest order corrections to the classical spatially flat cosmological FLRW solution (for the radiation). The presented approach is analogous to the...
A central theme in cosmology is the perplexing fact that the Universe is undergoing an accelerating expansion. The latter, one of the most important and challenging current problems in cosmology, rep...