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19922026
most citedAstropy: A Community Python Package for Astronomy

14.6k citations

Showing 2004Show all

91 papers · 1 filter

astro-ph2004★ 90 cited

The Optical and Ultraviolet Spectral Energy Distributions of Short Period Black Hole X-ray Transients in Outburst

R. I. Hynes

We compile optical and UV spectra of a sample of 'typical' short period black hole X-ray transients in outburst. We also survey determinations of interstellar extinction and distan…

gr-qc2004★ 27 cited

On characteristic initial data for a star orbiting a black hole

Nigel T. Bishop, Roberto Gomez, Luis Lehner +2

We take further steps in the development of the characteristic approach to enable handling the physical problem of a compact self-gravitating object, such as a neutron star, in clo…

gr-qc2004★ 16 cited

The 3-dimensional Einstein-Klein-Gordon system in characteristic numerical relativity

W. Barreto, A. Da Silva, R. Gomez +3

We incorporate a massless scalar field into a 3-dimensional code for the characteristic evolution of the gravitational field. The extended 3-dimensional code for the Einstein--Klei…

gr-qc2004★ 1 cited

Recent analytical and numerical techniques applied to the Einstein equations

Dave Neilsen, Luis Lehner, Olivier Sarbach +1

Combining deeper insight of Einstein's equations with sophisticated numerical techniques promises the ability to construct accurate numerical implementations of these equations. We…

math.CA2004

Laguerre Functions on Symmetric Cones and recursion relations in the Real Case

Michael Aristidou, Mark Davidson, Gestur 'Olafsson

In this article we derive differential recursion relations for the Laguerre functions on the cone C of positive definite real matrices. The highest weight representations of the gr…

gr-qc2004★ 26 cited

A numerical examination of an evolving black string horizon

D. Garfinkle, L. Lehner, F. Pretorius

We use the numerical solution describing the evolution of a perturbed black string presented in Choptuik et al. (2003) to elucidate the intrinsic behavior of the horizon. It is fou…

hep-ex2004★ 1 cited

Measuring Charged-Current Muon Neutrino Interactions in MiniBooNE

M. O. Wascko

MiniBooNE seeks to confirm or refute the LSND muon-antineutrino to electron-antineutrino oscillation signal with high statistical significance and different systematics. MiniBooNE…

gr-qc2004★ 3 cited

Boundary conditions for Einstein's field equations: Analytical and numerical analysis

Olivier Sarbach, Manuel Tiglio

Outer boundary conditions for strongly and symmetric hyperbolic formulations of 3D Einstein's field equations with a live gauge condition are discussed. The boundary conditions hav…

cond-mat.supr-con2004

Impurity-induced states in conventional and unconventional superconductors

A. V. Balatsky, I. Vekhter, Jian-Xin Zhu

We review recent developments in our understanding of how impurities influence the electronic states in the bulk of superconductors. Our focus is on the quasi-localized states in t…

math.OC2004★ 63 cited

Further Remarks on Strict Input-to-State Stable Lyapunov Functions for Time-Varying Systems

Michael Malisoff, Frederic Mazenc

We study the stability properties of a class of time-varying nonlinear systems. We assume that non-strict input-to-state stable (ISS) Lyapunov functions for our systems are given a…

astro-ph2004★ 108 cited

Dynamics of oscillating relativistic tori around Kerr black holes

O. Zanotti, J. A. Font, L. Rezzolla +1

We present a comprehensive numerical study of the dynamics of relativistic axisymmetric accretion tori with a power-law distribution of specific angular momentum orbiting in the ba…

math.GT2004★ 1 cited

On the Frohman Kania-Bartoszynska ideal

Patrick M. Gilmer

The Frohman Kania-Bartoszynska ideal is an invariant associated to a 3-manifold with boundary and a prime p >3. We give some estimates of this ideal. We also calculate this invaria…

math.QA2004★ 53 cited

Integral Lattices in TQFT

Patrick M. Gilmer, Gregor Masbaum

We find explicit bases for naturally defined lattices over a ring of algebraic integers in the SO(3) TQFT-modules of surfaces at roots of unity of odd prime order. Some application…

hep-ex2004★ 456 cited

Evidence for muon neutrino oscillation in an accelerator-based experiment

K2K Collaboration, E. Aliu

We present results for muon neutrino oscillation in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment. K2K uses an accelerator-produced muon neutrino beam with…

gr-qc2004★ 62 cited

Dynamical evolution of quasi-circular binary black hole data

Miguel Alcubierre, Bernd Bruegmann, Peter Diener +8

We study the fully nonlinear dynamical evolution of binary black hole data, whose orbital parameters are specified via the effective potential method for determining quasi-circular…

gr-qc2004★ 46 cited

Constraint-preserving boundary conditions in the Z4 Numerical Relativity formalism

C. Bona, T. Ledvinka, C. Palenzuela-Luque +1

The constraint-preserving approach, which aim is to provide consistent boundary conditions for Numerical Relativity simulations, is discussed in parallel with other recent developm…

math.AP2004

Support properties and Holmgren's uniqueness theorem for differential operators with hyperplane singularities

G. Olafsson, A. Pasquale

Let W be a finite Coxeter group acting linearly on . In this article we study support properties of W-invariant partial differential operator D on with real analytic co…

hep-ex2004★ 9 cited

Measurement of Exclusive rho^0 rho^0 Production in Mid-Virtuality Two-Photon Interactions at LEP

L3 Collaboration

Exclusive rho^0 rho^0 production in two-photon collisions between a quasi-real and a mid-virtuality photon is studied with data collected at LEP at centre-of-mass energies 183GeV <…

astro-ph2004★ 42 cited

Spectroscopic confirmation of high-redshift supernovae with the ESO VLT

C. Lidman, D. A. Howell, G. Folatelli +44

We present VLT FORS1 and FORS2 spectra of 39 candidate high-redshift supernovae that were discovered as part of a cosmological study using Type Ia supernovae (SNe Ia) over a wide r…

cond-mat.mes-hall2004★ 33 cited

Quantum Critical Behavior of Two Coupled Bose-Einstein Condensates

Feng Pan, J. P. Draayer

The quantum critical behavior of the Bose-Hubbard model for a description of two coupled Bose-Einstein condensates is studied within the framework of an algebraic theory. Energy le…

cond-mat.supr-con2004★ 9 cited

Super-hard Superconductivity

D. P. Young, M. Modovan, R. Prozorov +1

We present a study of the magnetic response of Type-II superconductivity in the extreme pinning limit, where screening currents within an order of magnitude of the Ginzburg-Landau…

math.OC2004

Global Stabilization for Systems Evolving on Manifolds

Michael Malisoff, Mikhail Krichman, Eduardo Sontag

We show that any globally asymptotically controllable system on any smooth manifold can be globally stabilized by a state feedback. Since we allow discontinuous feedbacks, we inter…

astro-ph2004★ 10 cited

Fireballs, Flares and Flickering: A Semi-analytic, LTE, Explosive Model from Accretion Disks to Supernovae

K. J. Pearson, Keith Horne, Warren Skidmore

We derive simple analytic expressions for the continuum lightcurves and spectra of flaring and flickering events that occur over a wide range of astrophysical systems. We compare t…

astro-ph2004★ 4 cited

Correlated X-ray and Optical Variability in X-ray Binaries

R. I. Hynes

It has long been known that X-ray and optical/UV variability in active X-ray binaries is sometimes correlated. The expectation has been that this arises from rapid reprocessing of…