Results 81 to 90 of about 19,748,042 (292)

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

Astronomy & 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, Tao Lian, Tsygankov Sergey S., Poutanen Juri, Feng Hua, Zhang Shuang-Nan, Li Hancheng, Ge Mingyu, Zhang Liang, Mushtukov Alexander A.   +9 more
doaj   +1 more source

Gaussian processes reconstruction of dark energy from observational data

European 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

High Energy Astrophysics

, 2016
I was invited as a lecturer at the Sumer School on Astrophysics and Astroparticles in Petnica Serbia. I gave talks on "High Energy Astrophysics", where I mainly focused on the production, propagation and detection of high energy astroparticles ...
Yang, Lili
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VUV and mid‐UV photoabsorption cross sections of thin films of glycine and alanine: Application to their photochemistry in the solar system

Photochemistry and Photobiology, EarlyView.
Thin solid films of pure glycine or alanine (thicknesses ranging from 10 to 700 nm) were prepared on MgF2 windows using a vacuum sublimation/recondensation method. VUV‐UV spectroscopy of these films enabled us to characterize new absorption cross sections for glycine and alanine for VUV‐UV radiations between 120 and 300 nm.
Juliette Pastore, Hervé Cottin, Kafila Saïagh, Jodie Belilla, Fabien Stalport, Nicolas Fray, Nathalie Carrasco   +6 more
wiley   +1 more source

Deformed Lorentz Symmetry and High-Energy Astrophysics (I)

, 2000
Updated version of a talk given at the ICRC 1999 ConferenceAn updated discussion of Lorentz symmetry violation in particle physics at very high energy is presented, focusing on applications of models of deformed Lorentz symmetry to high-energy ...
Gonzalez-Mestres, L.
core   +3 more sources

New insights on mutual information in the island approach to the Page curve

European Physical Journal C: Particles and Fields
In this article, we have presented one of the very important observations, regarding the behavior of mutual information of two different sets of subsystems in the after Page time scenario. This provides us with some deep insights about the redistribution
Anirban Roy Chowdhury, Souvik Paul, Sunandan Gangopadhyay   +2 more
doaj   +1 more source

Entering the Era of Directly Supporting Society With Observation‐Based Ocean Acidification Data

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract Ocean acidification is a growing concern for many nations around the world. However, our capacity to monitor changes in carbonate chemistry with sufficient spatial and temporal resolution, has until now, been limited, which has impeded effective action and decision‐making at international, national, and regional levels.
Helen S. Findlay, Lucile Gaultier, Luke Gregor, Nicolas Gruber, Peter Land, Daniel Ford, Roberto Sabia, Aleluia Taise‐Uili, Stephen Widdicombe, Jan Newton, Kaitlyn Lowder, Jamie Shutler   +11 more
wiley   +1 more source

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

European 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, Anirban Roy Chowdhury, Sunandan Gangopadhyay   +2 more
doaj   +1 more source

AHEAD: Integrated Activities in the High Energy Astrophysics Domain

, 2015
AHEAD (Integrated Activities in the High Energy Astrophysics Domain) is an ongoing project approved in the framework of the European Horizon 2020 program (Research Infrastructures for High Energy Astrophysics).
Enrico Virgilli, Filipo Frontera, Piero Rosati, Cristiano Guidorzi   +3 more
core  

High Energy Astrophysics Research and Programmatic Support [PDF]

, 1998
This report reviews activities performed by members of the USRA contract team during the six months of the reporting period and projected activities during the coming six months.
Angelini, Lorella
core