output
19942026
most citedThe Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package

5k citations

Showing 2009Show all

100 papers · 1 filter

astro-ph.CO2009★ 11 cited

Nainital Microlensing Survey -- detection of short period Cepheids in the disk of M31

Y. C. Joshi, D. Narasimha, A. K. Pandey +1

The discovery of large number of Cepheid variables in far-off galaxies offers a unique opportunity to determine the accurate distance of the host galaxy through their period-lumino…

astro-ph.SR2009★ 111 cited

ROSA: a high cadence, synchronized multi-camera solar imaging system

D. B. Jess, M. Mathioudakis, D. J. Christian +3

Rapid Oscillations in the Solar Atmosphere (ROSA) is a synchronized, six camera high cadence solar imaging instrument developed by Queen's University Belfast. The system is availab…

cond-mat.mes-hall2009★ 3 cited

Comment on "Electron transport through correlated molecules computed using the time-independent Wigner function: Two critical tests"

J. C. Greer, P. Delaney, G. Fagas

The many electron correlated scattering (MECS) approach to quantum electronic transport was investigated in the linear response regime [I. Baldea and H. Koeppel, Phys. Rev. B. 78,…

astro-ph.SR2009★ 161 cited

Optical and near infrared coverage of SN 2004et: physical parameters and comparison with other type IIP supernovae

K. Maguire, E. Di Carlo, S. J. Smartt +22

We present new optical and near infrared (NIR) photometry and spectroscopy of the type IIP supernova, SN 2004et. In combination with already published data, this provides one of th…

astro-ph.CO2009★ 36 cited

Type II-P supernovae as standardised candles: improvements using near infrared data

Kate Maguire, Rubina Kotak, Stephen J. Smartt +3

We present the first near infrared Hubble diagram for type II-P supernovae to further explore their value as distance indicators. We use a modified version of the standardised cand…

astro-ph.SR2009★ 75 cited

The quiet solar atmosphere observed and simulated in NaD1

J. Leenaarts, R. J. Rutten, K. Reardon +2

The NaD1 line in the solar spectrum is sometimes attributed to the solar chromosphere. We study its formation in quiet-Sun network and internetwork. We first present high-resolutio…

astro-ph.CO2009★ 89 cited

On the progenitor and early evolution of the type II supernova 2009kr

M. Fraser, K. Takats, A. Pastorello +13

We report the identification of a source coincident with SN 2009kr in HST pre-explosion images. The object appears to be a single point source with an intrinsic colour V-I = 1.1 an…

quant-ph2009★ 15 cited

Accurate "superluminal" transmission via entanglement, superoscillations and quasi-Dirac distributions

D. Sokolovski, R. Sala Mayato

We analyse a system in which, due to entanglement between the spin and spatial degrees of freedom, the reduced transmitted state has the shape of the freely propagating pulse trans…

astro-ph.EP2009★ 29 cited

The spin-orbit alignment of the transiting exoplanet WASP-3b from Rossiter-McLaughlin observations

E. K. Simpson, D. Pollacco, G. Hebrard +7

We present an observation of the Rossiter-McLaughlin effect for the planetary system WASP-3. Radial velocity measurements were made during transit using the SOPHIE spectrograph at…

astro-ph.CO2009★ 55 cited

On the nature of the progenitors of three type II-P supernovae: 2004et, 2006my and 2006ov

R. M. Crockett, S. J. Smartt, A. Pastorello +4

The pre-explosion observations of the type II-P supernovae 2006my, 2006ov and 2004et, are re-analysed. In the cases of supernovae 2006my and 2006ov we argue that the published cand…

cond-mat.quant-gas2009★ 21 cited

Vortex entanglement in Bose-Einstein condensates coupled to Laguerre-Gauss beams

N. Lo Gullo, S. McEndoo, Th. Busch +1

We study the establishment of vortex entanglement in remote and weakly interacting Bose Einstein condensates. We consider a two-mode photonic resource entangled in its orbital angu…

cond-mat.mtrl-sci2009★ 35 cited

On the density-potential mapping in time-dependent density functional theory

Neepa T. Maitra, Tchavdar N. Todorov, Chris Woodward +1

The key questions of uniqueness and existence in time-dependent density functional theory are usually formulated only for potentials and densities that are analytic in time. Simple…

astro-ph.EP2009★ 96 cited

The Return of Activity in Main-Belt Comet 133P/Elst-Pizarro

Henry H. Hsieh, David Jewitt, Pedro Lacerda +2

Comet 133P/Elst-Pizarro is the first-known and currently best-characterised member of the main-belt comets, a recently-identified class of objects that exhibit cometary activity bu…

math.FA2009

Schur and operator multipliers

I. G. Todorov, L. Turowska

Schur multipliers were introduced by Schur in the early 20th century and have since then found a considerable number of applications in Analysis and enjoyed an intensive developmen…

math.RA2009

Relative unitary commutator calculus and applications

R. Hazrat, N. Vavilov, Z. Zhang

This note revisits localisation and patching method in the setting of generalised unitary groups. Introducing certain subgroups of relative elementary unitary groups, we develop re…

quant-ph2009★ 18 cited

Quantum state transfer via temporal kicking of information

C. Di Franco, M. Paternostro, M. S. Kim

We propose a strategy for perfect state transfer in spin chains based on the use of an unmodulated coupling Hamiltonian whose coefficients are explicitly time dependent. We show th…

quant-ph2009★ 28 cited

Emergence of canonical ensembles from pure quantum states

Jaeyoon Cho, M. S. Kim

We consider a system weakly interacting with a bath as a thermodynamic setting to establish a quantum foundation of statistical physics. It is shown that even if the composite syst…

astro-ph.EP2009

The Dark Red Spot on KBO Haumea

Pedro Lacerda

Kuiper belt object 136108 Haumea is one of the most fascinating bodies in our solar system. Approximately 2000x1600x1000 km in size, it is one of the largest Kuiper belt objects (K…

astro-ph.EP2009★ 1 cited

The Sizes of Kuiper Belt Objects

Pedro Lacerda

One of the most fundamental problems in the study of Kuiper belt objects (KBOs) is to know their true physical size. Without knowledge of their albedos we are not able to distingui…

cond-mat.mtrl-sci2009

Mesophases in Nearly 2D Room-Temperature Ionic Liquids

N. Manini, M. Cesaratto, M. G. Del Popolo +1

Computer simulations of (i) a [C12mim][Tf2N] film of nanometric thickness squeezed at kbar pressure by a piecewise parabolic confining potential reveal a mesoscopic in-plane densit…

astro-ph.SR2009★ 109 cited

EC-SNe from super-AGB progenitors: theoretical models vs. observations

M. L. Pumo, M. Turatto, M. T. Botticella +6

Using a parametric approach, we determine the configuration of super-AGB stars at the explosion as a function of the initial mass and metallicity, in order to verify if the EC-SN s…

astro-ph.CO2009★ 137 cited

Two Type Ic supernovae in low-metallicity, dwarf galaxies: diversity of explosions

D. R. Young, S. J. Smartt, S. Valenti +15

We present BVRI photometry and optical spectroscopy of two Type Ic supernovae SN 2007bg and SN 2007bi discovered in wide-field, non-targeted surveys and associated with sub-luminou…

math.OA2009★ 1 cited

Tensor Products of Operator Systems

Ali S. Kavruk, Vern I. Paulsen, Ivan G. Todorov +1

The purpose of the present paper is to lay the foundations for a systematic study of tensor products of operator systems. After giving an axiomatic definition of tensor products in…

astro-ph.SR2009★ 7 cited

The masses and radii of HD186753B and TYC7096-222-1B: the discovery of two M-dwarfs that eclipse A-type stars

S. J. Bentley, B. Smalley, P. F. L. Maxted +10

We present observations of two new single-lined eclipsing binaries, both consisting of an Am star and an M-dwarf, discovered by the Wide Angle Search for Planets transit photometry…