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19922026
most citedAstropy: A Community Python Package for Astronomy

14.6k citations

Showing 2008Show all

114 papers · 1 filter

physics.class-ph2008★ 64 cited

Can Maxwell's equations be obtained from the continuity equation?

Jose A. Heras

We formulate an existence theorem that states that given localized scalar and vector time-dependent sources satisfying the continuity equation, there exist two retarded fields that…

physics.class-ph2008★ 1 cited

The Coulomb static gauge

Jose A. Heras

The existence of gauge conditions involving second-order derivatives of potentials is not well known in classical electrodynamics. We introduce one of these gauges, the Coulomb sta…

hep-ex2008★ 369 cited

Unexplained Excess of Electron-Like Events From a 1-GeV Neutrino Beam

MiniBooNE Collaboration

The MiniBooNE Collaboration observes unexplained electron-like events in the reconstructed neutrino energy range from 200 to 475 MeV. With protons on target,…

math.AP2008★ 1 cited

Field sensitivity to L^p variations of a scatterer

Stephen P. Shipman

For the problem of diffraction of harmonic scalar waves by a lossless periodic slab scatterer, we analyze field sensitivity with respect to the material coefficients of the slab. T…

math.FA2008★ 1 cited

Comparison of volumes of convex bodies in real, complex, and quaternionic spaces

Boris Rubin

The classical Busemann-Petty problem (1956) asks, whether origin-symmetric convex bodies in with smaller hyperplane central sections necessarily have smaller volume…

astro-ph2008★ 3 cited

NuGrid: Toward High Precision Double-Degenerate Merger Simulations with SPH in 3D

Steven Diehl, Christopher L. Fryer, Aimee Hungerford +11

We present preliminary results from recent high-resolution double-degenerate merger simulations with the Smooth Particle Hydrodynamics (SPH) technique. We put particular emphasis o…

math.KT2008

The Mayer-Vietoris principle for Grothendieck-Witt groups of schemes

Marco Schlichting

We prove localization and Zariski-Mayer-Vietoris for higher Grothendieck-Witt groups, alias hermitian -groups, of schemes admitting an ample family of line-bundles. No assumptio…

astro-ph2008★ 28 cited

An anti-correlation between X-ray luminosity and H-alpha equivalent width in X-ray binaries

R. P. Fender, D. M. Russell, C. Knigge +3

We report an anticorrelation between continuum luminosity and the equivalent width (EW) of the H-alpha emission line in X-ray binary systems. The effect is evident both in a univer…

physics.atom-ph2008★ 35 cited

Spectral signature of short attosecond pulse trains

E. Mansten, J. M. Dahlstrom, J. Mauritsson +10

We report experimental measurements of high-order harmonic spectra generated in Ar using a carrier-envelope-offset (CEO) stabilized 12 fs, 800nm laser field and a fraction (less th…

astro-ph2008★ 33 cited

A dense disk of dust around the born-again Sakurai's object

Olivier Chesneau, G. C. Clayton, F. Lykou +7

In 1996, Sakurai's object (V4334 Sgr) suddenly brightened in the centre of a faint Planetary Nebula (PN). This very rare event was interpreted as the reignition of a hot white dwar…

astro-ph2008★ 46 cited

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…

math.ST2008★ 1 cited

A Theory of Truncated Inverse Sampling

Xinjia Chen

In this paper, we have established a new framework of truncated inverse sampling for estimating mean values of non-negative random variables such as binomial, Poisson, hyper-geomet…

math.ST2008

Robust Estimation of Mean Values

Xinjia Chen

In this paper, we develop a computational approach for estimating the mean value of a quantity in the presence of uncertainty. We demonstrate that, under some mild assumptions, the…

math.GR2008★ 7 cited

Resonance of basis-conjugating automorphism groups

Daniel C. Cohen

We determine the structure of the first resonance variety of the cohomology ring of the group of automorphisms of a finitely generated free group which act by conjugation on a give…

math.AT2008★ 4 cited

Cohomology rings of almost-direct products of free groups

Daniel C. Cohen

An almost-direct product of free groups is an iterated semidirect product of finitely generated free groups in which the action of the constituent free groups on the homology of on…

hep-ex2008★ 84 cited

First Study of Neutron Tagging with a Water Cherenkov Detector

Kamiokande Collaboration, H. Watanabe, H. Zhang

A first study of neutron tagging is conducted in Super--Kamiokande, a 50,000-ton water Cherenkov detector. The tagging efficiencies of thermal neutrons are evaluated in a 0.2 % GdC…

math.AT2008★ 26 cited

Springer representations on the Khovanov Springer varieties

Heather M. Russell, Julianna S. Tymoczko

Springer varieties are studied because their cohomology carries a natural action of the symmetric group and their top-dimensional cohomology is irreducible. In his work on ta…

hep-ex2008★ 95 cited

Search for Charged Current Coherent Pion Production on Carbon in a Few-GeV Neutrino Beam

SciBooNE Collaboration, K. Hiraide

The SciBooNE Collaboration has performed a search for charged current coherent pion production from muon neutrinos scattering on carbon, ν_μ^{12}C \to μ^- ^{12}C π^+, with two dist…

quant-ph2008★ 60 cited

Manipulating sudden death of entanglement of two-qubit X-states in thermal reservoirs

Mazhar Ali, G. Alber, A. R. P. Rau

Manipulation of sudden death of entanglement (ESD) of two qubits interacting with statistically uncorrelated thermal reservoirs is investigated. It is shown that for initially prep…

math.AP2008

Results on the diffusion equation with rough coefficients

Burak Aksoylu, Horst R. Beyer

We study the behaviour of the solutions of the stationary diffusion equation as a function of a possibly rough (-) diffusivity. This includes the boundary behaviour of…

cond-mat.supr-con2008★ 16 cited

Inversion of specific heat oscillations with in-plane magnetic field angle in 2D d-wave superconductors

G. R. Boyd, P. J. Hirschfeld, I. Vekhter +1

Experiments on several novel superconducting compounds have observed oscillations of the specific heat when an applied magnetic field is rotated with respect to the crystal axes. T…

cond-mat.str-el2008

Doping a semiconductor to create an unconventional metal

N. Manyala, J. F. DiTusa, G. Aeppli +1

Landau Fermi liquid theory, with its pivotal assertion that electrons in metals can be simply understood as independent particles with effective masses replacing the free electron…

astro-ph2008★ 203 cited

Beyond ideal MHD: towards a more realistic modeling of relativistic astrophysical plasmas

Carlos Palenzuela, Luis Lehner, Oscar Reula +1

Many astrophysical processes involving magnetic fields and quasi-stationary processes are well described when assuming the fluid as a perfect conductor. For these systems, the idea…

astro-ph2008★ 22 cited

The Diverse Solar Phase Curves of Distant Icy Bodies. II. The Cause of the Opposition Surges and Their Correlations

Bradley E. Schaefer, David L. Rabinowitz, Suzanne W. Tourtellotte

We collect well-measured opposition surge properties for many icy bodies orbiting the Sun (mostly from our own observations) plus for many icy moons, resulting in a data base of su…