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Giant increase in cross-magnetic-field transport rate as an electron-positron plasma cools
The article focuses on a study of an electron-positron plasma in thermal equilibrium within a uniform magnetic field using a classical trajectory Monte Carlo simulation. The cross-magnetic-field single-particle diffusion coefficient is evaluated as a function of the magnetic field strength and plasma temperature. The transport rate is found to increase by many orders of magnitude as the plasma temperature is lowered, for a magnetic field strength of 1 T. The sharp dependence on temperature is due to electrons and positrons becoming temporarily correlated and drifting across the magnetic field before dissociating.
Date:
October 5, 2017
Creator:
Aguirre, F. F. & Ordonez, Carlos A.
System:
The UNT Digital Library
Charged Particle Reflection by a Planar Artificially Structured Boundary With Electrostatic Plugging
This article uses a classical trajectory Monte Carlo simulation to investigate an artificially structured boundary for confinement and control of charged particles.
Date:
November 30, 2017
Creator:
Hedlof, R. M. & Ordonez, Carlos A.
System:
The UNT Digital Library
Black Hole Growth Is Mainly Linked to Host-galaxy Stellar Mass Rather Than Star Formation Rate
This article investigates the dependence of black hole accretion rate (BHAR) on host-galaxy star formation rate (SFR) and stellar mass in the CANDELS/GOODS-South field in the redshift range of 0.5 ⩽ z < 2.0.
Date:
June 15, 2017
Creator:
Yang, G.; Chen, C. -T. J.; Vito, F.; Brandt, William Nielsen; Alexander, David M.; Luo, Bin et al.
System:
The UNT Digital Library
High-redshift AGN in the Chandra Deep Fields: the obscured fraction and space density of the sub-L∗ population
This article investigates the population of high-redshift (3≤z<6) active galactic nuclei (AGN) selected in the two deepest X-ray surveys, the 7 Ms Chandra Deep Field-South and 2 Ms Chandra Deep Field-North.
Date:
September 26, 2017
Creator:
Vito, F.; Brandt, William Nielsen; Yang, G.; Gilli, Roberto; Luo, Bin; Vignali, Christian et al.
System:
The UNT Digital Library
Exploratory X-Ray Monitoring of Luminous Radio-quiet Quasars at High Redshift: No Evidence for Evolution in X-Ray Variability
This article reports on the second installment of an X-ray monitoring project of seven luminous radio-quiet quasars (RQQs).
Date:
October 10, 2017
Creator:
Shemmer, Ohad; Brandt, William Nielsen; Paolillo, Maurizio; Kaspi, Shai; Vignali, Christian; Lira, Paulina et al.
System:
The UNT Digital Library
Tracing the accretion history of supermassive black holes through X-ray variability: results from the Chandra Deep Field-South
This article studies the X-ray variability properties of distant active galactic nuclei (AGNs) in the Chandra Deep Field-South region over 17 yr, up to z ~ 4, and compare them with those predicted by models based on local samples.
Date:
July 14, 2017
Creator:
Paolillo, Maurizio; Papadakis, I.; Brandt, William Nielsen; Luo, Bin; Xue, Yongquan; Tozzi, Paolo et al.
System:
The UNT Digital Library
Simultaneous Direct Holographic Fabrication of Photonic Cavity and Graded Photonic Lattice With Dual Periodicity, Dual Basis, and Dual Symmetry
This article demonstrates the digital, holographic fabrication of graded, super-basis photonic lattices with dual periodicity, dual basis, and dual symmetry.
Date:
June 15, 2017
Creator:
Lowell, David; Lutkenhaus, Jeffrey; George, David; Philipose, Usha; Chen, Banglin & Lin, Yuankun
System:
The UNT Digital Library
RBS Study of a Dilute Alloy of Ga(99.8% at.):Bi(0.2% at.)
This paper from the 2016 Conference on Application of Accelerators in Research and Industry conference proceedings describes an attempt to observe an atomic bismuth monolayer with Rutherford backscattering to demonstrate the surface concentration of the bismuth over the alloy in the bulk.
Date:
October 26, 2017
Creator:
Peterson, Randolph S.; Augustine, Carlyn N.; Beriont, Griffin G.; Farr, Aidan T.; Jenkins, William T. J.; Morris, Taylor A. et al.
System:
The UNT Digital Library
Reverberation Mapping of High-Luminosity Quasars
This article presents the CIV BLR size and luminosity relation over eight orders of magnitude in luminosity, pushing the luminosity limit to its highest point so far.
Date:
October 30, 2017
Creator:
Kaspi, Shai; Brandt, William Nielsen; Maoz, Dan; Netzer, Hagai; Schneider, Donald P. & Shemmer, Ohad
System:
The UNT Digital Library
Fast-Growing SMBHs in Fast-Growing Galaxies, at High Redshifts: The Role of Major Mergers as Revealed by ALMA
This article presents a long-term, multi-wavelength project to understand the epoch of fastest growth of the most massive black holes by using a sample of 40 luminous quasars at z ≃ 4.8.
Date:
September 30, 2017
Creator:
Trakhtenbrot, Benny; Lira, Paulina; Netzer, Hagai; Cicone, Claudia; Maiolino, Roberto & Shemmer, Ohad
System:
The UNT Digital Library
Antihydrogen Beam Formation by Transporting an Antiproton Beam Through an Electron-Positron Plasma That Produces Magnetobound Positronium
This paper from the 2016 Conference on Application of Accelerators in Research and Industry conference proceedings describes the use of a classical trajectory simulation to study the formation of an antihydrogen beam by transporting an antiproton beam through an electron-positron plasma that produces magnetobound positronium.
Date:
October 26, 2017
Creator:
Hermosillo, M.; Thornton, E. A. & Ordonez, Carlos A.
System:
The UNT Digital Library
An efficient and accurate framework for calculating lattice thermal conductivity of solids: AFLOW—AAPL Automatic Anharmonic Phonon Library
This article presents the Automatic Anharmonic Phonon Library.
Date:
November 17, 2016
Creator:
Plata, Jose J.; Nath, Pinku; Usanmaz, Demet; Carrete, Jesús; Toher, Cormac; de Jong, Maarten et al.
System:
The UNT Digital Library
Quantum walks of two interacting particles on percolation graphs
This paper addresses the dynamics of two indistinguishable interacting particles moving on a dynamical percolation graph.
Date:
October 6, 2017
Creator:
Siloi, Ilaria; Benedetti, Claudia; Piccinini, Enrico; Paris, Matteo G. A. & Bordone, Paolo
System:
The UNT Digital Library
Extraordinary Light-Trapping Enhancement in Silicon Solar Cell Patterned with Graded Photonic Super-Crystals
This article explores light-trapping enhancement in newly discovered graded photonic super-crystals (GPSCs) with dual periodicity and dual basis.
Date:
December 7, 2017
Creator:
Hassan, Safaa; Lowell, David; Adewole, Murthada; George, David; Zhang, Hualiang & Lin, Yuankun
System:
The UNT Digital Library
Radio-Frequency Actuated Polymer-Based Phononic Meta-Materials for Control of Ultrasonic Waves
This article describes the achievement of radio-frequency control of a n ultrasonic phononic crystal by encapsulating it in a composite of high k-10% KF-doped BaTiO₃ dielectric nanoparticles with poly(N-isopropylacrylamide) (PNIP Am)-based hydrogel.
Date:
July 14, 2016
Creator:
Walker, Ezekiel; Wang, Zhiming & Neogi, Arup
System:
The UNT Digital Library
Self-organizing Complex Networks: individual versus global rules
This article introduces a form of Self-organized Criticality (SOC) inspired by the new generation of evolutionary game theory, which ranges from physiology to sociology.
Date:
June 7, 2017
Creator:
Mahmoodi, Korosh; West, Bruce J. & Grigolini, Paolo
System:
The UNT Digital Library
Coupling of Surface Plasmon Polariton in Al-Doped ZnO with Fabry-Pérot Resonance for Total Light Absorption
This article presents finite-difference time-domain (FDTD) simulations on total light absorption (TLA) resulting from the coupling of a surface plasmon polariton (SPP) with Fabry-Pérot (F-P) resonance in a three-layer structure consisting of an AZO square lattice hole array, a spacer, and a layer of silver.
Date:
April 27, 2017
Creator:
George, David; Adewole, Murthada; Hassan, Safaa; Lowell, David; Cui, Jingbiao; Zhang, Hualiang et al.
System:
The UNT Digital Library
Improvement of Scratch and Wear Resistance of Polymers by Fillers Including Nanofillers
This article reviews approaches for improvement of tribological properties of polymers based on inclusion of fillers.
Date:
March 16, 2017
Creator:
Brostow, Witold, 1934-; Hagg Lobland, Haley E.; Hnatchuk, Nathalie & Pérez, José M.
System:
The UNT Digital Library
A new, faint population of X-ray transients
This article reports on the detection of a remarkable new fast high-energy transient found in the Chandra Deep Field-South, robustly associated with a faint host in the CANDELS survey.
Date:
February 15, 2017
Creator:
Bauer, Franz E.; Treister, Ezequiel; Schawinski, K.; Schulze, S.; Luo, Bin; Alexander, David M. et al.
System:
The UNT Digital Library
ALMA Observations Show Major Mergers Among the Host Galaxies of Fast-growing, High-redshift, Supermassive Black Holes
This article presents new ALMA band-7 data for a sample of six luminous quasars at z ≃ 4.8, powered by fast-growing supermassive black holes (SMBHs) with rather uniform properties.
Date:
February 3, 2017
Creator:
Trakhtenbrot, Benny; Lira, Paulina; Netzer, Hagai; Cicone, Claudia; Maiolino, Roberto & Shemmer, Ohad
System:
The UNT Digital Library
Bold-Independent Computational Entropy Assesses Functional Donut-Like Structures in Brain fMRI Images
This article introduces a novel technique of fMRI images analysis, called computational proximity method, i.e., nucleus clustering in Voronoï tessellations.
Date:
February 1, 2017
Creator:
Peters, James F.; Ramanna, Sheela; Tozzi, Arturo & Inan, Ebubekir
System:
The UNT Digital Library