7.7k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Space Telescope Science InstituteUS138 papers
- University of ArizonaUS124 papers
- California Institute of TechnologyUS119 papers
- Center for Astrophysics Harvard & SmithsonianUS102 papers
- Centre National de la Recherche ScientifiqueFR86 papers
- University of California, BerkeleyUS71 papers
- University of MichiganUS64 papers
- Oak Ridge National LaboratoryUS62 papers
- University of FloridaUS62 papers
- Jet Propulsion LaboratoryUS61 papers
- University of California, DavisUS61 papers
- University of Illinois Urbana-ChampaignUS61 papers
74 papers · 1 filter
Exact dynamical exchange-correlation kernel of a weakly inhomogeneous electron gas
V. U. Nazarov, G. Vignale, Y. -C. Chang
The dynamical exchange-correlation kernel of a non-uniform electron gas is an essential input for the time-dependent density functional theory of electronic systems. The l…
Toward understanding the 3.4 micron and 9.7 micron extinction feature variations from the local diffuse interstellar medium to the Galactic center
Jian Gao, B. W. Jiang, Aigen Li
Observationally, both the 3.4micron aliphatic hydrocarbon C--H stretching absorption feature and the 9.7micron amorphous silicate Si--O stretching absorption feature show considera…
The 21 micron and 30 micron circumstellar dust features in evolved C-rich objects
B. W. Jiang, Ke Zhang, Aigen Li
The 21micron and 30micron bands are the strongest dust emission features detected in evolved low- and intermediate-mass C-rich stars (i.e. asymptotic giant branch [AGB] stars, prot…
Quantum Creation of a Universe with varying speed of light: -problem and Instantons
Artyom V. Yurov, Valerian A. Yurov
This article is dedicated to cosmologies with variable speed of light (VSL) - models, which one can consider as a particular case of models of a modified gravitation. In quantum co…
Nonlocal Gravity Simulates Dark Matter
Friedrich W. Hehl, Bahram Mashhoon
A nonlocal generalization of Einstein's theory of gravitation is constructed within the framework of the translational gauge theory of gravity. In the linear approximation, the non…
Dust Processing and Grain Growth in Protoplanetary Disks in the Taurus-Auriga Star-Forming Region
B. A. Sargent, W. J. Forrest, C. Tayrien +9
Mid-infrared spectra of 65 T Tauri stars (TTS) taken with the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope are modeled using dust at two temperatures to probe t…
Silica in Protoplanetary Disks
B. A. Sargent, W. J. Forrest, C. Tayrien +10
Mid-infrared spectra of a few T Tauri stars (TTS) taken with the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope show prominent narrow emission features indicating…
The Dust-to-Gas Ratio in the Small Magellanic Cloud Tail
K. D. Gordon, C. Bot, E. Muller +21
The Tail region of the Small Magellanic Cloud (SMC) was imaged using the MIPS instrument on the Spitzer Space Telescope as part of the SAGE-SMC Spitzer Legacy. Diffuse infrared emi…
Probing Cosmic Dust of the Early Universe through High-Redshift Gamma-Ray Bursts
S. L. Liang, Aigen Li
We explore the extinction properties of the dust in the distant universe through the afterglows of high-redshifted GRBs based on the "Drude" model which, unlike previous studies, d…
Cluster fans, stability conditions, and domains of semi-invariants
Calin Chindris
We show that the cone of finite stability conditions of a quiver Q without oriented cycles has a fan covering given by (the dual of) the cluster fan of Q. Along the way, we give ne…
Exact and Asymptotic Conditions on Traveling Wave Solutions of the Navier-Stokes Equations
Y. Charles Li, Divakar Viswanath
We derive necessary conditions that traveling wave solutions of the Navier-Stokes equations must satisfy in the pipe, Couette, and channel flow geometries. Some conditions are exac…
Supercell studies of the Fermi surface changes in the electron-doped superconductor LaFeAsOF
P. Larson, S. Satpathy
We study the changes in the Fermi surface with electron doping in the LaFeAsOF superconductors with density-functional supercell calculations using the linearized augme…
Minimal Distortion Morphs Generated by Time-Dependent Vector Fields
Oksana Bihun, Carmen Chicone, Steven G. Harris
A morph between two Riemannian -manifolds is an isotopy between them together with the set of all intermediate manifolds equipped with Riemannian metrics. We propose measures of…
Incompleteness of the Landauer Formula for Electronic Transport
Giovanni Vignale, Massimiliano Di Ventra
We show that the Landauer multi-terminal formula for the conductance of a nanoscale system is incomplete because it does not take into account many-body effects which cannot be tre…
Silicon carbide absorption features: dust formation in the outflows of extreme carbon stars
Angela K. Speck, Adrian B. Corman, Kristina Wakeman +2
Infrared carbon stars without visible counterparts are generally known as extreme carbon stars. We have selected a subset of these stars with absorption features in the 10-13 m…
Electronic and Magnetic Structure of the (LaMnO)/(SrMnO) Superlattices
B. R. K. Nanda, S. Satpathy
We study the magnetic structure of the (LaMnO)/(SrMnO) superlattices from density-functional calculations. In agreement with the experiments, we find that the ma…
Transverse spin diffusion in ferromagnets
Yaroslav Tserkovnyak, E. M. Hankiewicz, Giovanni Vignale
We discuss the dissipative diffusion-type term of the form in the phenomenological Landau-Lifshitz equation of ferromagnetic precessi…
Collective Molecular Dynamics in Proteins and Membranes
Maikel C. Rheinstadter
The understanding of dynamics and functioning of biological membranes and in particular of membrane embedded proteins is one of the most fundamental problems and challenges in mode…
Discovery of Extreme Carbon Stars in the Large Magellanic Cloud
R. A. Gruendl, Y. -H. Chu, J. P. Seale +4
Using Spitzer IRAC and MIPS observations of the Large Magellanic Cloud, we have identified 13 objects that have extremely red mid-IR colors. Follow-up Spitzer IRS observations of s…
Growth of rank 1 valuation semigroups
Steven Dale Cutkosky, Kia Dalili, Olga Kashcheyeva
We consider the question of which semigroups can occur as the semigroup of positive values of a rank 1 valuation dominating a Noetherian local ring . We give a number o…
The gravitomagnetic influence on Earth-orbiting spacecrafts and on the lunar orbit
Sergei Kopeikin
Gravitomagnetic field is covariantly split in the {\it intrinsic} and {\it extrinsic} parts, which are generated by rotational and translational currents of matter respectively. Th…
The Cosmic Crystallinity Conundrum: Clues from IRAS 17495-2534
Angela K. Speck, Alan G. Whittington, Josh B. Tartar
Since their discovery, cosmic crystalline silicates have presented several challenges to understanding dust formation and evolution. The mid-infrared spectrum of IRAS 174952534,…
Motional Coherence in Fluid Phospholipid Membranes
Maikel C. Rheinstadter, Jhuma Das, Elijah J. Flenner +3
We report a high energy-resolution neutron backscattering study, combined with in-situ diffraction, to investigate slow molecular motions on nanosecond time scales in the fluid pha…
Subdiffusion and lateral diffusion coefficient of lipid atoms and molecules in phospholipid bilayers
Elijah Flenner, Jhuma Das, Maikel C. Rheinstadter +1
We use a long, all-atom molecular dynamics (MD) simulation combined with theoretical modeling to investigate the dynamics of selected lipid atoms and lipid molecules in a hydrated…