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297 papers · 1 filter

astro-ph2008★ 80 cited

Biases and Uncertainties in Physical Parameter Estimates of Lyman Break Galaxies from Broad-band Photometry

Seong-Kook Lee, Rafal Idzi, Henry C. Ferguson +3

We investigate the biases and uncertainties in estimates of physical parameters of high-redshift Lyman break galaxies (LBGs), such as stellar mass, mean stellar population age, and…

hep-ex2008★ 42 cited

Measurement of Cross Sections for Jet Production in Events with a Boson in Collisions at TeV

CDF collaboration, T. Aaltonen

A measurement of the $\bjet$ production cross section is presented for events containing a boson produced in collisions at TeV, using data correspond…

hep-ex2008★ 55 cited

Observation of New Charmless Decays of Bottom Hadrons

CDF Collaboration, T. Aaltonen

We search for new charmless decays of neutral b-hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding…

cond-mat.supr-con2008★ 63 cited

Suppression of antiferromagnetic spin fluctuations in the collapsed tetragonal phase of CaFe2As2

D. K. Pratt, Y. Zhao, S. A. J. Kimber +10

Inelastic neutron scattering measurements of CaFe2As2 under applied hydrostatic pressure show that the antiferromagnetic spin fluctuations observed in the ambient pressure, paramag…

hep-ex2008★ 252 cited

Search for new particles decaying into dijets in proton-antiproton collisions at sqrt(s) = 1.96 TeV

The CDF Collaboration, T. Aaltonen

We present a search for new particles whose decays produce two jets (dijets) using proton-antiproton collision data corresponding to an integrated luminosity of 1.13 fb-1 collected…

nlin.CD2008★ 25 cited

Recent Fluid Deformation closure for velocity gradient tensor dynamics in turbulence: time-scale effects and expansions

Marco Martins Afonso, Charles Meneveau

In order to model pressure and viscous terms in the equation for the Lagrangian dynamics of the velocity gradient tensor in turbulent flows, Chevillard & Meneveau (Phys. Rev. Lett.…

astro-ph2008★ 96 cited

The VLA Survey of the Chandra Deep Field South. IV. Source Population

P. Padovani, V. Mainieri, P. Tozzi +5

We present a detailed analysis of 256 radio sources from our deep (flux density limit of 42 microJy at the field centre at 1.4 GHz) Chandra Deep Field South 1.4 and 5 GHz VLA surve…

cs.RO2008★ 41 cited

Urologic robots and future directions

Pierre Mozer, Jocelyne Troccaz, Dan Stoianovici

PURPOSE OF REVIEW: Robot-assisted laparoscopic surgery in urology has gained immense popularity with the daVinci system, but a lot of research teams are working on new robots. The…

astro-ph2008

Modeling H2 Fluorescence in Planetary Atmospheres with Partial Frequency Redistribution

R. E. Lupu, P. D. Feldman, S. R. McCandliss +1

We present the modeling of partial frequency redistribution (PRD) effects for the fluorescent emission lines of molecular hydrogen, the general computational approximations, and th…

astro-ph2008★ 1 cited

Essential observations of the Lyman continuum

Stephan R. McCandliss

Concurrent observations of Lyman continuum (LyC) and Lyman-alpha (Lya) emission escaping from star-forming systems at low redshift are essential to understanding the physics of rei…

astro-ph2008★ 5 cited

Variable Intrinsic Absorption in Mrk 279

Jennifer E. Scott, Nahum Arav, Jack R. Gabel +5

We examine the variability in the intrinsic absorption in the Seyfert 1 galaxy Mrk 279 using three epochs of observations from the Far Ultraviolet Spectroscopic Explorer (FUSE) and…

math.DG2008★ 1 cited

On the global well-posedness of the one-dimensional Schrodinger map flow

Igor Rodnianski, Yanir A. Rubinstein, Gigliola Staffilani

We establish the global well-posedness of the initial value problem for the Schrodinger map flow for maps from the real line into Kahler manifolds and for maps from the circle into…

astro-ph2008★ 74 cited

Reaction of Accretion Disks to Abrupt Mass Loss During Binary Black Hole Merger

Sean M. O'Neill, M. Coleman Miller, Tamara Bogdanovic +2

The association of an electromagnetic signal with the merger of a pair of supermassive black holes would have many important implications. For example, it would provide new informa…

hep-ex2008★ 27 cited

Top Quark Mass Measurement in the Lepton plus Jets Channel Using a Modified Matrix Element Method

CDF Collaboration, T. Aaltonen

We report a measurement of the top quark mass, m_t, obtained from ppbar collisions at sqrt(s) = 1.96 TeV at the Fermilab Tevatron using the CDF II detector. We analyze a sample cor…

hep-ex2008★ 66 cited

Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF

CDF Collaboration, T. Aaltonen

We report on the first search for top-quark production via flavor-changing neutral-current (FCNC) interactions in the non-standard-model process u(c)+g -> t using ppbar collision d…

astro-ph2008★ 312 cited

Feast and Famine: Regulation of Black Hole Growth in Low Redshift Galaxies

Guinevere Kauffmann, Timothy M. Heckman

We analyze the observed distribution of Eddington ratios as a function of supermassive black hole mass for a large sample of nearby galaxies drawn from the Sloan Digital Sky Survey…

astro-ph2008★ 60 cited

A Map of the Integrated Sachs-Wolfe Signal from Luminous Red Galaxies

Benjamin R. Granett, Mark C. Neyrinck, István Szapudi

We construct a map of the time derivative of the gravitational potential traced by SDSS Luminous Red Galaxies. The potential decays on large scales due to cosmic acceleration, leav…

astro-ph2008★ 5.4k cited

The Seventh Data Release of the Sloan Digital Sky Survey

K. Abazajian

This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDS…

physics.plasm-ph2008★ 38 cited

Stochastic Line-Motion and Stochastic Conservation Laws for Non-Ideal Hydromagnetic Models. I. Incompressible Fluids and Isotropic Transport Coefficients

Gregory L. Eyink

We prove that smooth solutions of non-ideal (viscous and resistive) incompressible magnetohydrodynamic equations satisfy a stochastic law of flux conservation. This property involv…

astro-ph2008★ 55 cited

Spectroscopy of High-Redshift Supernovae from the ESSENCE Project: The First Four Years

R. J. Foley, T. Matheson, S. Blondin +23

We present the results of spectroscopic observations from the ESSENCE high-redshift supernova (SN) survey during its first four years of operation. This sample includes spectra of…

astro-ph2008

Wide Area X-ray Surveys for AGN and Starburst Galaxies

A. Ptak

While often the point sources in X-ray surveys are dominated by AGN, with the high sensitivity of modern X-ray telescopes such as Chandra and XMM-Newton normal/starburst galaxies a…

hep-ex2008★ 13 cited

Measurement of the kT Distribution of Particles in Jets Produced in ppbar Collisions at s**(1/2)=1.96$-TeV

CDF Collaboration, T. Aaltonen

We present a measurement of the transverse momentum with respect to the jet axis () of particles in jets produced in collisions at TeV. Results are…

hep-ex2008★ 84 cited

Inclusive Search for Squark and Gluino Production in ppbar Collisions at sqrt{s} = 1.96 TeV

T. Aaltonen

We report on a search for inclusive production of squarks and gluinos in ppbar collisions at sqrt{s}=1.96 TeV, in events with large missing transverse energy and multiple jets of h…

physics.flu-dyn2008★ 57 cited

Heat transfer mechanisms in bubbly Rayleigh-Benard convection

Paolo Oresta, Roberto Verzicco, Detlef Lohse +1

The heat transfer mechanism in Rayleigh-Benard convection in a liquid with a mean temperature close to its boiling point is studied through numerical simulations with point-like va…