Results 111 to 120 of about 60,419 (262)
Mimicking dark matter and dark energy in a mimetic model compatible with GW170817
, 2018 The recent observation of the gravitational wave event GW170817 and of its electromagnetic counterpart GRB170817A, from a binary neutron star merger, has established that the speed of gravitational waves deviates from the speed of light by less than one ...
Vagnozzi, Sunny, +3 more
core +1 more source
Cold light dark matter in extended seesaw models
, 2018 International audienceWe present a thorough discussion of light dark matter produced via freeze-in in two-body decays A→ B DM . If A and B are quasi-degenerate, the dark matter particle has a cold spectrum even for keV masses.
Sami Boulebnane +7 more
core +2 more sources
The Astrophysical JournalA fundamental prediction of the Lambda cold dark matter cosmology is the centrally divergent cuspy density profile of dark matter haloes. Density cusps render cold dark matter haloes resilient to tides, and protect dwarf galaxies embedded in them from ...
Raphaël Errani +4 more
doaj +1 more source
Advanced Materials, EarlyView.A general, versatile laser‐shock synthesis process is reported to produce various bimetallic CuNi, CuFe, CuCo, and medium‐entropy CuFeCoNi heterostructures, in which crystalline metal nanoparticles are anchored to amorphous hydroxide supports. During nitrate reduction reaction, the heterostructures undergo dynamic amorphous/crystalline reconstruction ...
Weihua Guo +18 more
wiley +1 more source
F(R) gravity dark energy model of an interaction between dark radiation and dark matter
European Physical Journal C: Particles and FieldsIn this work, we will study the late-time dynamic evolution of the F(R) gravity dark energy model of an interaction between dark radiation and dark matter.
Yannan Qi +4 more
doaj +1 more source
Advanced Materials, EarlyView.This project developed a smart bandage‐like patch (a microneedle array) for repairing diabetic bone damage. It intelligently senses signals from infection and inflammation, then releases its medicines in a specific, timed sequence: first an antibacterial agent, then an anti‐inflammatory agent, and finally growth factors.
Yu Wang +10 more
wiley +1 more source
, 2004 The existence of Dark Matter (DM) has been known since the 30's of the last century. The first cognitions from motions of galaxies in clusters and by the kinematics of individual galaxies were followed by systematic investigations, primarily via galaxy ...
Klein U +4 more
core
A Quantum Model for the Dynamics of Cold Dark Matter
, 2019 A model for cold dark matter is given by the solution of a coupled Schrodinger-Poisson equation system. We present a numerical scheme for integrating these equations, discussing the problems arising from their nonlinear and nonlocal character.
Sandro Wimberger +8 more
core +1 more source
Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization
Advanced Materials Interfaces, EarlyView.Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan +6 more
wiley +1 more source
The distribution of dark matter in galaxies: Constant-density dark halos envelop the stellar disks
, 2001 In this paper we review the main and the most recent evidence for the presence of a core radius in the distribution of the dark matter around spiral galaxies.
Borriello A. +4 more
core +1 more source