Results 121 to 130 of about 113,784 (303)

Elliptical galaxies with rapidly decreasing velocity dispersion profiles: NMAGIC models and dark halo parameter estimates for NGC 4494

, 2013
NGC 4494 is one of several intermediate-luminosity elliptical galaxies inferred to have an unusually diffuse dark matter halo. We use the chi^2-made-to-measure particle code NMAGIC to construct axisymmetric models of NGC 4494 from photometric and various
Arnaboldi, Magda, Coccato, Lodovico, Gerhard, Ortwin, Martinez-Valpuesta, Inma, Morganti, Lucia   +4 more
core   +1 more source

Thermoreflectance Detection of Point Defects Resulting from Focused Ion Beam Milling

Advanced Engineering Materials, EarlyView.
Focused ion beam (FIB) milling is a common tool for nanoscale material processing, however irradiation damage, redeposition, and contamination can occur. We use several characterization tools to show FIB‐induced effects beyond 1 mm from the milled area.
Thomas W. Pfeifer, Eric R. Hoglund, Anton V. Ievlev, Patrick E. Hopkins   +3 more
wiley   +1 more source

Dark matter halo mass functions and density profiles from mass and energy cascade. [PDF]

Sci Rep, 2023
Xu ZJ.
europepmc   +1 more source

Dark Matter Halo Merger Histories Beyond Cold Dark Matter: I - Methods and Application to Warm Dark Matter

, 2012
We describe a methodology to accurately compute halo mass functions, progenitor mass functions, merger rates and merger trees in non-cold dark matter universes using a self-consistent treatment of the generalized extended Press-Schechter formalism.
Benson, Andrew J., Cole, Shaun, Farahi, Arya, Frenk, Carlos, Helly, John, Jenkins, Adrian, Kennedy, Rachel, Lovell, Mark, Moustakas, Leonidas A.   +8 more
core   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Quasinormal modes of Schwarzschild black holes in the Dehnen-(1, 4, 5/2) type dark matter halos

European Physical Journal C: Particles and Fields
The Dehnen-type dark matter density distribution model is mainly used for dwarf galaxies. In recent years, researchers have speculated that black holes may exist in this dark matter model and have given the black hole metric solutions.
Qi-Qi Liang, Dong Liu, Zheng-Wen Long
doaj   +1 more source

Gamma-rays From Warm WIMP Dark Matter Annihilation

, 2012
The weakly interacting massive particle (WIMP) often serves as a candidate for the cold dark matter, however when produced non-thermally it could behave like warm dark matter.
Bi, Xiao-Jun, Cao, Yixian, Gao, Liang, Liu, Jie, Yin, Peng-Fei, Yuan, Qiang, Zhang, Xinmin   +6 more
core   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

Black hole surrounded by the pseudo-isothermal dark matter halo

European Physical Journal C: Particles and Fields
In this paper, we obtain a new spherically symmetric black hole surrounded by the pseudo-isothermal dark matter halo. Furthermore, to explore the effects of the pseudo-isothermal halo profile on a rotating black hole at the M87 galactic center, we derive
Yi Yang, Dong Liu, Ali Övgün, Gaetano Lambiase, Zheng-Wen Long   +4 more
doaj   +1 more source

Dark Matter Particles in the Galactic Halo

, 2014
To appear in the Proceedings of the 17th Bled workshop "What comes beyond the standard models"
openaire   +4 more sources