Results 41 to 50 of about 7,111 (156)

Very-High Energy Gamma Astrophysics

open access: yesLa Rivista del Nuovo Cimento, 2007
60 pages, 52 figures, (on line abstract replacement)
DE ANGELIS, Alessandro   +2 more
openaire   +3 more sources

High-Energy Astrophysics and the Virtual Observatory [PDF]

open access: yesChinese Journal of Astronomy and Astrophysics, 2006
The Virtual Observatory (VO) will revolutionise the way we do Astronomy by allowing easy access to all astronomical data and by making the handling and analysis of datasets at various locations across the globe much simpler and faster. I report here on the need for the VO and its status in Europe, concentrating on the recently started EURO-VO project ...
openaire   +2 more sources

Holographic entanglement entropy and complexity for the cosmological braneworld model

open access: yesJournal of High Energy Physics
In a recent study [1], the time-dependent entanglement entropy of the universe undergoing expansion according to various power laws has been analyzed within the framework of the braneworld model. The results of the entanglement entropy in that paper take
Souvik Paul   +2 more
doaj   +1 more source

Gaussian processes reconstruction of dark energy from observational data

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
In the present paper, we investigate the dark energy equation of state using the Gaussian processes analysis method, without confining a particular parametrization. The reconstruction is carried out by adopting the background data including supernova and
Ming-Jian Zhang, Hong Li
doaj   +1 more source

Gauge interactions and the Galilean limit

open access: yesEuropean Physical Journal C: Particles and Fields
The gauge invariant minimal couplings for a class of relativistic free matter fields with global symmetry (related to usual charge conservation) have been obtained by incorporating an iterative Noether mechanism. Non-relativistic reduction of both matter
Ashis Saha   +2 more
doaj   +1 more source

Discovery of energy-dependent phase variations in the polarization angle of Cen X-3

open access: yesAstronomy & Astrophysics
We present a detailed polarimetric analysis of Cen X-3 using IXPE observations during its high state, revealing a complex, energy-dependent polarization behavior. While phase-averaged polarization shows marginal energy dependence, phase-resolved analysis
Zhao Qing-Chang   +9 more
doaj   +1 more source

High Energy Astrophysics

open access: yes, 2014
Preface for Special Issue of Frontiers of Physics dedicated to High Energy Astrophysics, 3 ...
Zhang, Bing, Meszaros, Peter
openaire   +2 more sources

Investigating the role of mutual information in the Page curve for a functional renormalization group improved Schwarzschild black hole

open access: yesEuropean Physical Journal C: Particles and Fields
The present work delves into probing the importance of mutual information of relevant subsystems in obtaining the correct time-evolution of fine-grained entropy of Hawking radiation, as suggested by Page.
Ashis Saha   +2 more
doaj   +1 more source

Z-pole test of effective dark matter diboson interactions at the CEPC

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We investigate the projected sensitivity to effective dark matter (DM)–diboson interaction during the high luminosity Z-pole and 240 GeV runs at the proposed Circular Electron Positron Collider (CEPC).
Mingjie Jin, Yu Gao
doaj   +1 more source

On the Galactic Center being the main source of galactic cosmic rays as evidenced by recent cosmic ray and gamma ray observations

open access: yesNew Journal of Physics, 2013
We revisit the idea that the Galactic Center (GC) is the dominant source of galactic cosmic rays (GCRs), based on a series of new observational evidence. A unified model is proposed to explain the new phenomena of GCRs and γ -rays simultaneously.
Yi-Qing Guo   +4 more
doaj   +1 more source

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