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19932026
most citedFirst M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole

4.3k citations

Showing 2009Show all

91 papers · 1 filter

nucl-th2009★ 5 cited

Neutron-Proton Mass Difference in Nuclear Matter and in Finite Nuclei and the Nolen-Schiffer Anomaly

Ulf-G. Meißner, A. M. Rakhimov, A. Wirzba +1

The neutron-proton mass difference in (isospin asymmetric) nuclear matter and finite nuclei is studied in the framework of a medium-modified Skyrme model. The proposed effective La…

cond-mat.str-el2009★ 114 cited

Quasi-particle scattering and protected nature of topological states in a parent topological insulator BiSe

S. R. Park, W. S. Jung, Chul Kim +5

We report on angle resolved photoemission spectroscopic studies on a parent topological insulator (TI), BiSe. The line width of the spectral function (inverse of the quasi-…

astro-ph.GA2009★ 46 cited

A wide-field photometric survey for extratidal tails around five metal-poor globular clusters in the Galactic halo

Sang-Hyun Chun, Jae-Woo Kim, Sangmo T. Sohn +7

Wide-field deep gri images obtained with the Megacam of the Canada-France-Hawaii Telescope (CFHT) are used to investigate the spatial configuration of stars around five metal-poor…

hep-th2009★ 29 cited

Schrodinger invariant solutions of M-theory with Enhanced Supersymmetry

Jaehoon Jeong, Hee-Cheol Kim, Sangmin Lee +2

We find the most general solution of 11-dimensional supergravity compatible with N=2 super-Schrodinger symmetry with six supercharges and SU(2) x SU(2) x U(1) x Z_2 global symmetry…

cond-mat.supr-con2009★ 8 cited

Fermi surfaces and quantum oscillations in underdoped high-Tc superconductors YBa2Cu3O6.5 and YBa2Cu4O8

Hyungju Oh, Hyoung Joon Choi, Steven G. Louie +1

We study underdoped high-Tc superconductors YBa2Cu3O6.5 and YBa2Cu4O8 using first-principles pseudopotential methods with additional Coulomb interactions at the Cu atoms, and obtai…

astro-ph.SR2009★ 8 cited

The TAOS Project Stellar Variability I. Detection of Low-Amplitude delta Scuti Stars

D. -W. Kim, P. Protopapas, C. Alcock +22

We analyzed data accumulated during 2005 and 2006 by the Taiwan-American Occultation Survey (TAOS) in order to detect short-period variable stars (periods of <~ 1 hour) such as del…

hep-ph2009★ 27 cited

Study of Decay Modes B -->K_0^*(1430) phi

C. s Kim, Ying Li, Wei Wang

Within the framework of perturbative QCD approach based on factorization, we investigate the charmless decay mode . Under two different scenarios…

hep-ex2009★ 149 cited

Observation of a charmonium-like enhancement in the gamma gamma --> omega J/psi process

The Belle Collaboration, S. Uehara

We report the results of a search for a charmonium-like state produced in the process gamma gamma --> omega J/psi in the 3.9-4.2 GeV/c^2 mass region. We observe a significant enhan…

hep-ex2009★ 131 cited

Evidence for a new resonance and search for the Y(4140) in

The Belle Collaboration, C. P. Shen

The process $γγ\to ϕ\jpsi$ is measured for $ϕ\jpsi$ masses between threshold and 5 GeV/, using a data sample of 825 fb collected with the Belle detector. A narrow…

hep-ex2009★ 85 cited

Transverse momentum dependence of J/psi polarization at midrapidity in p+p collisions at sqrt(s)=200 GeV

PHENIX Collaboration, A. Adare

We report the measurement of the transverse momentum dependence of inclusive J/psi polarization in p+p collisions at sqrt(s)=200 GeV performed by the PHENIX Experiment at RHIC. The…

astro-ph.CO2009★ 319 cited

The SAURON project XVI: On the Sources of Ionisation for the Gas in Elliptical and Lenticular Galaxies

Marc Sarzi, Joseph C. Shields, Kevin Schawinski +16

Following our study on the incidence, morphology and kinematics of the ionised gas in early-type galaxies we now address the question of what is powering the observed nebular emiss…

nucl-ex2009★ 316 cited

Detailed measurement of the e+e- pair continuum in p+p and Au+Au collisions at sqrt(s_NN)=200 GeV and implications for direct photon production

PHENIX Collaboration, A. Adare

PHENIX has measured the e^+e^- pair continuum in sqrt(s_NN)=200 GeV Au+Au and p+p collisions over a wide range of mass and transverse momenta. The e^+e^- yield is compared to the e…

astro-ph.GA2009★ 103 cited

The Presence of Two Distinct Red Giant Branches in the Globular Cluster NGC 1851

Sang-Il Han, Young-Wook Lee, Seok-Joo Joo +4

There is a growing body of evidence for the presence of multiple stellar populations in some globular clusters, including NGC 1851. For most of these peculiar globular clusters, ho…

astro-ph.GA2009★ 161 cited

Enrichment by supernovae in globular clusters with multiple populations

Jae-Woo Lee, Young-Woon Kang, Jina Lee +1

The most massive globular cluster in the Milky Way, omega Centauri, is thought to be the remaining core of a disrupted dwarf galaxy, as expected within the model of hierarchical me…

cs.PL2009

Accelerating the Execution of Matrix Languages on the Cell Broadband Engine Architecture

Raymes Khoury, Bernd Burgstaller, Bernhard Scholz

Matrix languages, including MATLAB and Octave, are established standards for applications in science and engineering. They provide interactive programming environments that are eas…

astro-ph.CO2009★ 136 cited

The Local Hosts of Type Ia Supernovae

James D. Neill, Mark Sullivan, D. Andy Howell +18

We use multi-wavelength, matched aperture, integrated photometry from GALEX, SDSS and the RC3 to estimate the physical properties of 166 nearby galaxies hosting 168 well-observed T…

hep-ex2009★ 147 cited

First proton-proton collisions at the LHC as observed with the ALICE detector: measurement of the charged particle pseudorapidity density at = 900 GeV

ALICE Collaboration

On 23rd November 2009, during the early commissioning of the CERN Large Hadron Collider (LHC), two counter-rotating proton bunches were circulated for the first time concurrently i…

cs.IT2009★ 21 cited

Cooperative Feedback for Multi-Antenna Cognitive Radio Networks

Kaibin Huang, Rui Zhang

Cognitive beamforming (CB) is a multi-antenna technique for efficient spectrum sharing between primary users (PUs) and secondary users (SUs) in a cognitive radio network. Specifica…

hep-ph2009★ 4 cited

Little Higgs model with new Z-parity and Dark matter

C. S. Kim, Jubin Park

It has been known that Little Higgs models with T-parity, which can give a dark matter candidate, suffer from the anomalies of given models through the Wess-Zumino-Witten term, whi…

hep-ph2009★ 346 cited

New Charmonium States in QCD Sum Rules: a Concise Review

Marina Nielsen, Fernando S. Navarra, Su Houng Lee

In the past years there has been a revival of hadron spectroscopy. Many interesting new hadron states were discovered experimentally, some of which do not fit easily into the quark…

hep-ex2009★ 11 cited

Observation of B+ to p Lambdabar pi+ pi- at Belle

P. Chen, M. -Z. Wang

We study charmless meson decays to the final state using a data sample collected at the resonance with the Belle detector at the…

astro-ph.EP2009★ 16 cited

Upper Limits on the Number of Small Bodies in Sedna-Like Orbits by the TAOS Project

J. -H. Wang, M. J. Lehner, Z. -W. Zhang +21

We present the results of a search for occultation events by objects at distances between 100 and 1000 AU in lightcurves from the Taiwanese-American Occultation Survey (TAOS). We s…

astro-ph.CO2009★ 30 cited

12co(J=1-0) on-the-Fly Mapping Survey of the Virgo Cluster Spirals. I. Data and Atlas

E. J. Chung, M. -H. Rhee, H. Kim +3

We have performed an On-The-Fly (OTF) mapping survey of emission in 28 Virgo cluster spiral galaxies using the Five College Radio Astronomy Observatory (FC…

cs.NI2009★ 3 cited

Interference Mitigation Using Uplink Power Control for Two-Tier Femtocell Networks

Han-Shin Jo, Cheol Mun, June Moon +1

This paper proposes two interference mitigation strategies that adjust the maximum transmit power of femtocell users to suppress the cross-tier interference at a macrocell base sta…