Results 121 to 130 of about 241,163 (335)

Halo Occupation Distribution of Quasars: Dependence on Luminosity, Redshift, Black Hole Mass and Feedback Modes

The Astrophysical Journal
We use cosmological hydrodynamic simulations (IllustrisTNG and SIMBA) to explore the redshift, luminosity, and black hole mass dependence of the quasar halo occupation distribution (HOD).
Anirban Chowdhary, Suchetana Chatterjee
doaj   +1 more source

Micromechanical Characterization of 316L‐V4E Steel Transitions Produced by Electron Beam Powder Bed Fusion with Dual‐Hopper Alternating Layer Strategy

Advanced Engineering Materials, EarlyView.
This work applies High‐Speed Nanoindentation to study multi‐material transitions in powder bed fusion–electron beam melting components. The aim is to assess the mechanical gradients and interfacial behavior between American iron and steel institute 316L stainless steel and V4E tool steel in additively manufactured structures.
Laia Ortiz‐Membrado, William Sjöström, Francesc Barberà Flichi, Carlos Botero, Anton S. Tremsin, Antonio Mateo, Emilio Jiménez‐Piqué   +6 more
wiley   +1 more source

The Redshift Evolution of the Luminosity Function of Type II Gamma-Ray Bursts

The Astrophysical Journal
As of 2023 December, the Neil Gehrels Swift Observatory satellite has detected more than 1600 gamma-ray bursts (GRBs). We select 307 Type II GRBs for constructing the luminosity function (LF) based on the following criteria: (1) duration T _90 ≥ 2 s; (2)
Yan-Kun Qu, Zhong-Xiao Man, Yu-Peng Yang, Shuang-Xi Yi, Mei Du, Fa-yin Wang   +5 more
doaj   +1 more source

Quantum ergosphere and brick wall entropy

Physics Letters B, 2019
We revisit the “brick wall” model for black hole entropy taking into account backreaction effects on the horizon structure. We do so by adopting an evaporating metric in the quasi-static approximation in which departures from the standard Schwarzschild ...
M. Arzano, L. Brocki, J. Kowalski-Glikman, M. Letizia, J. Unger   +4 more
doaj   +1 more source

Requirements and Evaluation of Commercial Digital Light Processing 3D Printers for Upscaled Production of Microstructured Tissue Culture Devices

Advanced Engineering Materials, EarlyView.
Commercial light‐based 3D printers increasingly find use for industry‐scale production of microstructured tissue culture devices. How can commercial printer performance be assessed for a given application? This work introduces simplified quantitative metrics based on microstructural fidelity analysis, addressing key manufacturing challenges in scaling ...
Zoltán András Guller, Freja Høier, Rujing Zhang, Sandra Wilson, Niels B. Larsen   +4 more
wiley   +1 more source

Bright z ∼ 9 Galaxies in Parallel: The Bright End of the Rest-frame UV Luminosity Function from HST Parallel Programs

The Astrophysical Journal
The abundance of bright galaxies at z > 8 can provide key constraints on models of galaxy formation and evolution, as the predicted abundance varies greatly when different physical prescriptions for gas cooling and star formation are implemented.
Micaela B. Bagley, Steven L. Finkelstein, Sofía Rojas-Ruiz, James Diekmann, Keely D. Finkelstein, Mimi Song, Casey Papovich, Rachel S. Somerville, Ivano Baronchelli, Y. Sophia Dai   +9 more
doaj   +1 more source

Real-time pattern recognition with FPGA at LHCb, an O(n) complexity architecture [PDF]

EPJ Web of Conferences
The LHCb collaboration is planning an upgrade (LHCb “Upgrade- II”) to collect data during Run 5 at an instantaneous luminosity an order of magnitude larger than the current one (Run 3).
Lazzari Federico, Contu Andrea, Fantechi Riccardo, He Jibo, Jashal Brij Kishor, Martinelli Maurizio, Morello Michael J., Oyanguren Arantza, Pica Lorenzo, Punzi Giovanni, Shi Qi, Terzuoli Francesco, Tuci Giulia, Xu Ao, Zhuo Jiahui   +14 more
doaj   +1 more source

Micromechanical Insights into Sinter‐Based Additively Manufactured NiTi with Nb as a Sintering Aid

Advanced Engineering Materials, EarlyView.
This study investigates the microstructural and micromechanical behavior of NiTiNb made through filament‐based materials extrusion via chemically correlated nanoindentation. B19' remnants from the original powder lead to Nb gradients within NiTiNb grains due to the short sintering times required in liquid‐phase sintering.
Nerea Abando, Rebecca A. Gallivan, Nensi Toncich, Arnold Müller, Ralph Spolenak   +4 more
wiley   +1 more source

Luminosity Function of Collapsar Gamma-Ray Bursts: The Progenitor of Long Gamma-Ray Bursts Is Not Singular

The Astrophysical Journal
Gamma-ray bursts (GRBs) are powerful probes of the high-redshift Universe. However, the proportion of collapsar GRBs among long GRBs and their event rate relative to the star formation rate (SFR) remain contentious issues. We assume that long GRBs with z
Yan-Kun Qu, Zhong-Xiao Man, Shuang-Xi Yi, Yu-Peng Yang   +3 more
doaj   +1 more source

Adjustment of Coatings Morphology and Particle Distribution of Layered Silicates by Freeze‐Drying for Improved Gas Barriers

Advanced Engineering Materials, EarlyView.
Freeze‐drying of layered silicate is the key to get coatings with superior gas barrier. Freeze‐drying of layered silicates modified with dodecylamine (DDA) is a highly effective technique for the preparation of barrier pigments that significantly mitigate the permeation of oxygen, water vapor, and hydrogen through polymer films containing these ...
Joshua Lommes, Moritz Bätcher, Andrea Deißenberger, Volkmar Stenzel, Andreas Hartwig   +4 more
wiley   +1 more source