Results 71 to 80 of about 326,974 (218)

CMB photons shedding light on dark matter

, 2012
The annihilation or decay of Dark Matter (DM) particles could affect the thermal history of the universe and leave an observable signature in Cosmic Microwave Background (CMB) anisotropies.
, A. Lewis, Benjamin Audren, D. Blas, D. Pequignot, D. Scott, G.D. Becker, Gaëlle Giesen, I.D. McGreer, J. Caruana ., J. Lesgourgues, J.S.B. Wyithe, Julien Lesgourgues, M. Cirelli, M. Maggiore, P. Peebles, R. Cen, R. Keisler ., R. Sunyaev, S. Kasuya, S. Seager, S. Yeung, S.H. Hansen, WMAP collaboration, Y.B. Zel'dovich, Yacine Ali-Haïmoud, Z. Lukic   +26 more
core   +3 more sources

Relic Abundance of Asymmetric Dark Matter

, 2011
We investigate the relic abundance of asymmetric Dark Matter particles that were in thermal equilibrium in the early universe. The standard analytic calculation of the symmetric Dark Matter is generalized to the asymmetric case.
E. Nardi, Hoernisa Iminniyaz, J.J. Heckman, L.J. Hall, M.L. Graesser, M.R. Buckley, M.T. Frandsen, Manuel Drees, N. Haba, N. Jarosik ., P.-H. Gu, S. Profumo, WMAP collaboration, Xuelei Chen   +13 more
core   +1 more source

Rational Explanation of Annihilation in Islamic Mysticism [PDF]

حکمت اسرا, 2011
In their spiritual journeys, mystics should travel through different stages in which they gain mystical experiences some of which can hardly be expressed to others.
Abolfadhl Kiyashemshaki
doaj  

Atomic ionization at annihilation of positrons emitted at β+-decay [PDF]

Ядерна фізика та енергетика, 2011
Atomic ionization at annihilation of positron with another electron of daughter's atom at +-decay is studied. Processes of the different atomic shells ionization at annihilation of positron, emitted at +-decay, with K-electron of daughter's atom are ...
S. N. Fedotkin
doaj  

FIVE BASIC MILITARY STRATEGIES AND THEIR MODERN IMPLEMENTATION [PDF]

Journal of Defense Resources Management
This article explores the continued relevance and transformation of five foundational military strategies – extermination, annihilation, exhaustion, intimidation, and subversion – within the context of twenty-first-century conflict.
Rashad TAHIROV, Sadi SADIYEV, Hikmet HASANOV   +2 more
doaj   +1 more source

DarkHistory: A code package for calculating modified cosmic ionization and thermal histories with dark matter and other exotic energy injections

, 2019
We present a new public Python package, DarkHistory, for computing the effects of dark matter annihilation and decay on the temperature and ionization history of the early universe. DarkHistory simultaneously solves for the evolution of the free electron
Liu, Hongwan, Ridgway, Gregory W., Slatyer, Tracy R.   +2 more
core   +1 more source

Effects of Electroweak Radiative Corrections in Polarized Low-Energy Electron–Positron Annihilation into Lepton Pairs [PDF]

, 2022
A. B. Arbuzov, S. Bondarenko, Ya. Dydyshka, L. Kalinovskaya, L. Rumyantsev, R. Sadykov, V. Yermolchyk, Yu. Yermolchyk   +7 more
openalex   +1 more source

Highly Effective Near‐Infrared Light‐Activatable Triplet Fusion Upconversion with BODIPY Annihilators: Triplet Modulation via Non‐Conjugated n–π Spatial Electron Coupling [PDF]

, 2023
Lin‐Han Jiang, Le Zeng, Mingyu Zhang, Ling Huang, Dai‐Wen Pang   +4 more
openalex   +1 more source

Injectivity And Annihilators

Demonstratio Mathematica, 1990
The paper starts off with a characterization of the known concept of a biregular ring in terms of the complement left annihilator of a semiprime ring. A ring \(A\) is said to be a \(LIS\) ring if for any two right ideals \(I\), \(J\) of \(A\), the equality \(\ell(I\cap J)=\ell(I)+\ell(J)\) holds.
openaire   +2 more sources

Influence of the nuclear electric field on processes of annihilation of positrons emitted at β+-decay [PDF]

Ядерна фізика та енергетика, 2014
The process of atomic shell ionization during annihilation of positron, emitted at β+-decay, with K-electron of daughter's atom is considered. The role of nuclear Coulomb field at calculation of the probability of this process is investigated.
S. N. Fedotkin
doaj