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495 papers · 1 filter

hep-ex2011★ 448 cited

Jet energy measurement with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV

ATLAS Collaboration

The jet energy scale (JES) and its systematic uncertainty are determined for jets measured with the ATLAS detector at the LHC in proton-proton collision data at a centre-of-mass en…

astro-ph.GA2011★ 100 cited

Proper motions of the Arches cluster with Keck-LGS Adaptive Optics: the first kinematic mass measurement of the Arches

Will Clarkson, Andrea Ghez, Mark Morris +5

We report the first detection of the intrinsic velocity dispersion of the Arches cluster - a young (~2 Myr), massive (~10,000 Solar Mass) starburst cluster located near the Galacti…

hep-ph2011★ 310 cited

Properties of baryon resonances from a multichannel partial wave analysis

A. V. Anisovich, R. Beck, E. Klempt +3

Properties of nucleon and resonances are derived from a multichannel partial wave analysis. The statistical significance of pion and photo-induced inelastic reactions off proto…

nucl-ex2011★ 18 cited

Evidence for a negative-parity spin-doublet of nucleon resonances at 1.88\,GeV

A. V. Anisovich, E. Klempt, V. A. Nikonov +3

Evidence is reported for two nucleon resonances with spin-parity and at a mass just below 1.9\,GeV. The evidence is derived from a coupled-channel analysis…

hep-ex2011★ 21 cited

Evidence for a spin-quartet of nucleon resonances at 2\,GeV

A. V. Anisovich, E. Klempt, V. A. Nikonov +2

Results from a multi-channel partial wave analysis of elastic and inelastic and induced reactions are presented. The analysis evidences the existence of a spin-quartet of…

astro-ph.CO2011★ 25 cited

The Cosmic Web and galaxy evolution around the most luminous X-ray cluster: RXJ1347.5-1145

M. Verdugo, M. Lerchster, H. Boehringer +5

In this paper we study the large scale structures and their galaxy content around the most X-ray luminous cluster known, RX J1347.5-1145 at z=0.45. We make use of ugriz CFHT MEGACA…

astro-ph.IM2011★ 13 cited

2D-1D Wavelet Reconstruction As A Tool For Source Finding In Spectroscopic Imaging Surveys

Lars Flöer, Benjamin Winkel

Today, image denoising by thresholding of wavelet coefficients is a commonly used tool for 2D image enhancement. Since the data product of spectroscopic imaging surveys has two spa…

cs.CV2011★ 10 cited

Insights from Classifying Visual Concepts with Multiple Kernel Learning

Alexander Binder, Shinichi Nakajima, Marius Kloft +5

Combining information from various image features has become a standard technique in concept recognition tasks. However, the optimal way of fusing the resulting kernel functions is…

astro-ph.GA2011★ 169 cited

More on the structure of tidal tails

Andreas H. W. Kuepper, Richard R. Lane, Douglas C. Heggie

We investigate the epicyclic motion of stars escaping from star clusters. Using streaklines, we visualise the path of escaping stars and show how epicyclic motion leads to over- an…

astro-ph.IM2011★ 50 cited

Using negative detections to estimate source finder reliability

P. Serra, R. Jurek, L. Floer

We describe a simple method to determine the reliability of source finders based on the detection of sources with both positive and negative total flux. Under the assumption that t…

astro-ph.HE2011★ 97 cited

Multi-year search for dark matter annihilations in the Sun with the AMANDA-II and IceCube detectors

IceCube Collaboration, R. Abbasi, Y. Abdou +258

A search for an excess of muon-neutrinos from dark matter annihilations in the Sun has been performed with the AMANDA-II neutrino telescope using data collected in 812 days of live…

cond-mat.str-el2011★ 17 cited

Independent ferroelectric contributions and rare-earth-induced polarization reversal in multiferroic TbMn2O5

N. Leo, D. Meier, R. V. Pisarev +3

Three independent contributions to the magnetically induced spontaneous polarization of multiferroic TbMn2O5 are uniquely separated by optical second harmonic generation and an ana…

astro-ph.CO2011★ 85 cited

Gas sloshing, cold fronts, Kelvin-Helmholtz instabilities and the merger history of the cluster of galaxies Abell 496

E. Roediger, L. Lovisari, R. Dupke +4

We investigate the origin and nature of the multiple sloshing cold fronts in the core of Abell 496 by direct comparison between observations and dedicated hydrodynamical simulation…

astro-ph.SR2011★ 65 cited

The VLT-FLAMES Tarantula Survey: The fastest rotating O-type star and shortest period LMC pulsar - remnants of a supernova disrupted binary?

P. L. Dufton, P. R. Dunstall, C. J. Evans +12

We present a spectroscopic analysis of an extremely rapidly rotating late O-type star, VFTS102, observed during a spectroscopic survey of 30 Doradus. VFTS102 has a projected rotati…

astro-ph.SR2011★ 9 cited

The evolution of the surface brightness of a star cluster as a result of residual star-forming gas expulsion

F. Lueghausen, G. Parmentier, J. Pflamm-Altenburg +1

Direct N-body calculations are presented of the early evolution of exposed clusters to quantify the influence of gas expulsion on the time-varying surface brightness. By assuming t…

astro-ph.SR2011★ 14 cited

A Surprising Dynamical Mass for V773~Tau~B

A. Boden, G. Torres, G. Duchene +4

We report on new high-resolution imaging and spectroscopy on the multiple T Tauri star system V773 Tau over the 2003 -- 2009 period. With these data we derive relative astrometry,…

astro-ph.SR2011★ 186 cited

Predictions for mass-loss rates and terminal wind velocities of massive O-type stars

L. E. Muijres, Jorick S. Vink, A. de Koter +2

Mass loss forms an important aspect of the evolution of massive stars, as well as for the enrichment of the surrounding ISM. Our goal is to predict accurate mass-loss rates and ter…

nucl-ex2011★ 74 cited

Anomaly in the K^0_S Sigma^+ photoproduction cross section off the proton at the K* threshold

R. Ewald, A. V. Anisovich, B. Bantes +57

The photoproduction reaction is investigated in the energy region from threshold to \,MeV. The differential cross section exhibits increasin…

math.AP2011

On Global Stability for Lifschitz-Slyozov-Wagner like equations

Joseph G. Conlon, Barbara Niethammer

This paper is concerned with the stability and asymptotic stability at large time of solutions to a system of equations, which includes the Lifschitz-Slyozov-Wagner (LSW) system in…

astro-ph.CO2011★ 36 cited

The impact of high spatial frequency atmospheric distortions on weak lensing measurements

Catherine Heymans, Barnaby Rowe, Henk Hoekstra +4

High precision cosmology with weak gravitational lensing requires a precise measure of the Point Spread Function across the imaging data where the accuracy to which high spatial fr…

hep-ex2011★ 215 cited

Measurement of inclusive jet and dijet production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector

ATLAS Collaboration

Inclusive jet and dijet cross sections have been measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using the ATLAS detector at the Large Hadron Collider. The…

hep-ex2011★ 43 cited

Search for heavy vector-like quarks coupling to light quarks in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector

ATLAS Collaboration

This letter presents a search for singly produced vector-like quarks, Q, coupling to light quarks, q. The search is sensitive to both charged current (CC) and neutral current (NC)…

hep-ex2011★ 106 cited

Observation of a new chi_b state in radiative transitions to Upsilon(1S) and Upsilon(2S) at ATLAS

ATLAS Collaboration

The chi_b(nP) quarkonium states are produced in proton-proton collisions at the Large Hadron Collider (LHC) at sqrt(s) = 7 TeV and recorded by the ATLAS detector. Using a data samp…

math.PR2011★ 35 cited

Non-colliding Brownian bridges and the asymmetric tacnode process

Patrik L. Ferrari, Balint Veto

We consider non-colliding Brownian bridges starting from two points and returning to the same position. These positions are chosen such that, in the limit of large number of bridge…