Results 31 to 40 of about 47,971 (215)

The Origin of the Extragalactic Gamma-Ray Background and Implications for Dark-Matter Annihilation

, 2015
The origin of the extragalactic $\gamma$-ray background (EGB) has been debated for some time. { The EGB comprises the $\gamma$-ray emission from resolved and unresolved extragalactic sources, such as blazars, star-forming galaxies and radio galaxies, as ...
Ackermann, M., Ajello, M., Bechtol, K., Cohen-Tanugi, J., Dermer, C. D., Franckowiak, A., Gasparrini, D., Gustafsson, M., Hartmann, D., Inoue, Y., Reimer, A., Romani, R. W., Sanchez-Conde, M., Strong, A. W., Zaharijas, G.   +14 more
core   +3 more sources

Black holes in the Einstein -Gauss-Bonnet theory and the geometry of their thermodynamics-II

, 2009
In the present work we study (i) charged black hole in Einstein-Gauss-Bonnet (EGB) theory, known as Einstein-Maxwell-Gauss-Bonnet (EMGB) black hole and (ii) black hole in EGB gravity with Yang-Mills field.
D.G. Boulware, D.L. Wiltshire, D.L. Wiltshire, F. Weinhold, G. Ruppeiner, G. Ruppeiner, G. Ruppeiner, J. Shen, J.D. Bekenstein, J.E. Aman, J.E. Aman, J.M. Bardeen, M. Thibeault, R. Biswas, R.C. Myers, R.G. Cai, R.G. Cai, R.G. Cai, Ritabrata Biswas, S. Chakraborty, S. Ferrara, S.H. Mazharimousavi, S.W. Hawking, Subenoy Chakraborty, T. Clunan   +24 more
core   +1 more source

Oposiciones EGB [PDF]

, 1980
Abstract not ...
  +3 more sources

Born-Infeld Black Holes in 4D Einstein-Gauss-Bonnet Gravity

, 2020
A novel four-dimensional Einstein-Gauss-Bonnet gravity was formulated by D. Glavan and C. Lin [Phys. Rev. Lett. 124, 081301 (2020)], which is intended to bypass the Lovelock's theorem and to yield a non-trivial contribution to the four-dimensional ...
Gu, Bao-Min, Liu, Yu-Xiao, Wei, Shao-Wen, Yang, Ke   +3 more
core   +1 more source

EGb 761

Drugs in R & D, 2003
EGb 761 [Ginkgo biloba extract EGb 761, Rökan, Tanakan, Tebonin] is a standardised extract of Ginkgo biloba leaves and has antioxidant properties as a free radical scavenger. A standardised extract of Ginkgo biloba leaves is a well defined product and contains approximately 24% flavone glycosides (primarily quercetin, kaempferol and isorhamnetin) and 6%
openaire   +2 more sources

Topological Point Defects in SmC* Liquid Crystals Under Mechanical Disturbance

Advanced Materials Interfaces, EarlyView.
Tangetial air jet shear inducess island formation and nucleates topological point defects in uniform SmC films. Island bounded by edge dislocation loops shrink and transform into isolated point defects under continued shear. Mechanical perturbatio provides a controllable route for defect engineering in smectric liquid crystal thin films.
Gunganist Kongklad, Vandana Molahalli, Apichart Pattanaporkratana, Nattaporn Chattham   +3 more
wiley   +1 more source

Probing the Intergalactic Magnetic Field with the Anisotropy of the Extragalactic Gamma-ray Background [PDF]

, 2013
The intergalactic magnetic field (IGMF) may leave an imprint on the angular anisotropy of the extragalactic gamma-ray background through its effect on electromagnetic cascades triggered by interactions between very high energy photons and the ...
Pavlidou, Vasiliki, Venters, Tonia M.
core   +4 more sources

Grain Boundary‐Driven Lattice Dynamics in a Solid‐State Li‐Ion Conductor

Advanced Science, EarlyView.
Grain boundaries in Li3OCl${\rm Li}_3{\rm OCl}$ are shown to significantly alter its lattice dynamics and induce Li‐ion vibrational hardening and anion softening. These changes hinder ion transport while promoting electronic conductivity and instability.
Jack M. Hemingway, James A. Quirk, Erli Lu, James A. Dawson   +3 more
wiley   +1 more source

A new Determination of the Extragalactic Background of Diffuse Gamma Rays taking into account Dark Matter Annihilation

, 2007
The extragalactic background (EGB) of diffuse gamma rays can be determined by subtracting the Galactic contribution from the data. This requires a Galactic model (GM) and we include for the first time the contribution of dark matter annihilation (DMA ...
A. Nordt, Bergström, C. Sander, de Boer, de Boer, de Boer, Elsässer, Esposito, Hunter, Moskalenko, Strong, Strong, Strong, Thompson, V. Zhukov, W. de Boer   +15 more
core   +1 more source

Array‐Level Characterization of Cryogenic RRAM

Advanced Electronic Materials, EarlyView.
This paper reports the first array‐level comprehensive electrical characterization of a 1024‐device HfO2‐based RRAM array from 300, 77 to 4 K, covering forming, set/reset switching, endurance, retention, relaxation, and read disturb. The results manifest the high performance of RRAM array at cryogenic temperatures and huge application potential for ...
Yuyao Lu, Ruofei Hu, Zhixing Jiang, Feng Xu, Bin Gao, Jianshi Tang, He Qian, Huaqiang Wu   +7 more
wiley   +1 more source