output
19922026
most citedMeasurements of Omega and Lambda from 42 High-Redshift Supernovae

18.1k citations

Showing 2009 · astro-ph.COShow all

8 papers · 2 filters

astro-ph.CO2009★ 5 cited

Evidence for Non-Linear Growth of Structure from an X-ray Selected Cluster Survey using a Novel Joint Analysis of the Chandra and XMM-Newton Archives

J. R. Peterson, J. G. Jernigan, R. R. Gupta +2

We present a large X-ray selected serendipitous cluster survey based on a novel joint analysis of archival Chandra and XMM-Newton data. The survey provides enough depth to reach cl…

astro-ph.CO2009★ 71 cited

Improved Constraints on the Gravitational Lens Q0957+561. II. Strong Lensing

Ross Fadely, Charles R. Keeton, Reiko Nakajima +1

We present a detailed strong lensing analysis of an HST/ACS legacy dataset for the first gravitational lens, Q0957+561. With deep imaging we identify 24 new strongly lensed feature…

astro-ph.CO2009★ 498 cited

GRB 090423 at a redshift of z~8.1

R. Salvaterra, M. Della Valle, S. Campana +42

Gamma-ray bursts (GRBSs) are produced by rare types of massive stellar explosions. Their rapidly fading afterglows are often bright enough at optical wavelengths, that they are det…

astro-ph.CO2009★ 17 cited

Residual noise covariance for Planck low-resolution data analysis

R. Keskitalo, M. A. J. Ashdown, P. Cabella +22

Aims: Develop and validate tools to estimate residual noise covariance in Planck frequency maps. Quantify signal error effects and compare different techniques to produce low-resol…

astro-ph.CO2009★ 21 cited

BOOMERanG Constraints on Primordial Non-Gaussianity from Analytical Minkowski Functionals

P. Natoli, G. De Troia, C. Hikage +32

We use Minkowski Functionals (MF) to constrain a primordial non-Gaussian contribution to the CMB intensity field as observed in the 150 GHz and 145 GHz BOOMERanG maps from the 1998…

astro-ph.CO2009★ 447 cited

The Precision Array for Probing the Epoch of Reionization: 8 Station Results

Aaron R. Parsons, Donald C. Backer, Richard F. Bradley +12

We are developing the Precision Array for Probing the Epoch of Reionization (PAPER) to detect 21cm emission from the early Universe, when the first stars and galaxies were forming.…

astro-ph.CO2009★ 12 cited

Infrared identification of IGR J09026-4812 as a Seyfert 1 galaxy

J. A. Zurita Heras, S. Chaty, J. A. Tomsick

IGR J09026-4812 was discovered by INTEGRAL in 2006 as a new hard X-ray source. Thereafter, an observation with Chandra pinpointed a single X-ray source within the ISGRI error circl…

astro-ph.CO2009★ 25 cited

Improved Constraints on the Gravitational Lens Q0957+561. I. Weak Lensing

R. Nakajima, G. M. Bernstein, R. Fadely +2

Attempts to constrain the Hubble constant using the strong gravitational lens system Q0957+561 are limited by systematic uncertainties in the mass model, since the time delay is kn…