Self calibration of photometric redshift scatter in weak lensing surveys (2009)
Zhang, Pengjie, Pen, Ue-Li, Bernstein, Gary
Photo-z errors, especially catastrophic errors, are a major uncertainty for precision weak lensing cosmology. We find that the shear-(galaxy number) density and density-density cross correlation...
Results of the GREAT08 Challenge: An image analysis competition for cosmological lensing (2009)
Bridle, Sarah, Balan, Sreekumar T., Bethge, Matthias, Gentile, Marc, Harmeling, Stefan, Heymans, Catherine, ...
We present the results of the GREAT08 Challenge, a blind analysis challenge to infer weak gravitational lensing shear distortions from images. The primary goal was to stimulate new ideas by...
Catastrophic photometric redshift errors: weak lensing survey requirements (2009)
Bernstein, Gary, Huterer, Dragan
We study the sensitivity of weak lensing surveys to the effects of catastrophic redshift errors - cases where the true redshift is misestimated by a significant amount. To compute the biases in...
Findings of the Joint Dark Energy Mission Figure of Merit Science Working Group (2009)
Albrecht, Andreas, Amendola, Luca, Bernstein, Gary, Clowe, Douglas, Eisenstein, Daniel, Guzzo, Luigi, ...
These are the findings of the Joint Dark Energy Mission (JDEM) Figure of Merit (FoM) Science Working Group (SWG), the FoMSWG. JDEM is a space mission planned by NASA and the DOE for launch in the...
Selective Binding, Self-Assembly and Nanopatterning of the Creutz-Taube Ion on Surfaces (2009)
Yuliang Wang, Marya Lieberman, Qingling Hang, Gary Bernstein
The surface attachment properties of the Creutz-Taube ion, i.e., [(NH3)5Ru(pyrazine)Ru(NH3)5]5+, on both hydrophilic and hydrophobic types of surfaces were investigated using X-ray photoelectron...
Diagnosing Space Telescope Misalignment and Jitter Using Stellar Images (2008)
Ma, Zhaoming, Bernstein, Gary, Weinstein, Alan, Sholl, Michael
Accurate knowledge of the telescope's point-spread function (PSF) is essential for the weak gravitational lensing measurements that hold great promise for cosmological constraints. For space...
Diagnosing space telescope misalignment and jitter using stellar images (2008)
Ma, Zhaoming, Bernstein, Gary, Weinstein, Alan, Sholl, Michael
Accurate knowledge of the telescope's point spread function (PSF) is essential for the weak gravitational lensing measurements that hold great promise for cosmological constraints. For space...
Handbook for the GREAT08 Challenge: An image analysis competition for cosmological lensing (2008)
Bridle, Sarah, Shawe-Taylor, John, Amara, Adam, Applegate, Douglas, Balan, Sreekumar T., Berge, Joel, ...
The GRavitational lEnsing Accuracy Testing 2008 (GREAT08) Challenge focuses on a problem that is of crucial importance for future observations in cosmology. The shapes of distant galaxies can be used...
Size of spectroscopic calibration samples for cosmic shear photometric redshifts (2007)
Weak gravitational lensing surveys using photometric redshifts can have their cosmological constraints severely degraded by errors in the photo-z scale. We explore the cosmological degradation vs the...
The familiar tools of Fourier analysis and Fisher matrices are applied to derive the uncertainties on photometric, astrometric, and weak-lensing measurements of stars and galaxies in real...
Received; accepted Revision 3.2 5/1/97 accepted by ApJ Letters (2007)
Gary Bernstein, J. Anthony Tyson, George Rhee, Hubble Fellow
New HST WFPC2 observations of the lensed double QSO 0957+561 will allow improved constraints on the lens mass distribution and hence will improve the derived value of H 0. We first present improved...
Gary Bernstein, Bharat Khushalani
We present a procedure for determination of positions and orbital elements, and associated uncertainties, of outer Solar System planets. The orbit-fitting procedure is greatly streamlined compared to...
Report of the Dark Energy Task Force (2006)
Albrecht, Andreas, Bernstein, Gary, Cahn, Robert, Freedman, Wendy L., Hewitt, Jacqueline, Hu, Wayne, ...
Dark energy appears to be the dominant component of the physical Universe, yet there is no persuasive theoretical explanation for its existence or magnitude. The acceleration of the Universe is,...
The Shear TEsting Programme 2: Factors affecting high precision weak lensing analyses (2006)
Massey, Richard, Heymans, Catherine, Berge, Joel, Bernstein, Gary, Bridle, Sarah, Clowe, Douglas, ...
The Shear TEsting Programme (STEP) is a collaborative project to improve the accuracy and reliability of weak lensing measurement, in preparation for the next generation of wide-field surveys. We...
Evaluating Dark Energy Probes using Multi-Dimensional Dark Energy Parameters (2006)
Albrecht, Andreas, Bernstein, Gary
We investigate the value of future dark energy experiments by modeling their ability to constrain the dark energy equation of state. Similar work was recently reported by the Dark Energy Task Force...
Shear Recovery Accuracy in Weak Lensing Analysis with Elliptical Gauss-Laguerre Method (2006)
Nakajima, Reiko, Bernstein, Gary
We implement the Elliptical Gauss-Laguerre (EGL) galaxy-shape measurement method proposed by Bernstein & Jarvis (2002) and quantify the shear recovery accuracy in weak lensing analysis. This method...
Systematic effects in the sound horizon scale measurements (2006)
Guzik, Jacek, Bernstein, Gary, Smith, Robert E.
We investigate three potential sources of bias in distance estimations made assuming that a very simple estimator of the baryon acoustic oscillation (BAO) scale provides a standard ruler. These are...
The Shear Testing Programme - I. Weak lensing analysis of simulated ground-based observations (2006)
Heymans, Catherine, Van Waerbeke, Ludovic, Bacon, David, Berge, Joel, Bernstein, Gary, Bertin, Emmanuel, ...
The Shear Testing Programme (STEP) is a collaborative project to improve the accuracy and reliability of all weak lensing measurements in preparation for the next generation of wide-field surveys. In...
PSF Anisotropy and Systematic Errors in Weak Lensing Surveys (2005)
Jain, Bhuvnesh, Jarvis, Mike, Bernstein, Gary
Given the basic parameters of a cosmic shear weak lensing survey, how well can systematic errors due to anisotropy in the point spread function (PSF) be corrected? The largest source of error in this...
Inhomogeneous systematic signals in cosmic shear observations (2005)
We calculate the systematic errors in the weak gravitational lensing power spectrum which would be caused by spatially varying calibration (i.e. multiplicative) errors, such as might arise from...
The Shear TEsting Programme 1: Weak lensing analysis of simulated ground-based observations (2005)
Heymans, Catherine, Van Waerbeke, Ludovic, Bacon, David, Berge, Joel, Bernstein, Gary, Bertin, Emmanuel, ...
The Shear TEsting Programme, STEP, is a collaborative project to improve the accuracy and reliability of all weak lensing measurements in preparation for the next generation of wide-field surveys. In...
Huterer, Dragan, Takada, Masahiro, Bernstein, Gary, Jain, Bhuvnesh
We study the impact of systematic errors on planned weak lensing surveys and compute the requirements on their contributions so that they are not a dominant source of the cosmological parameter error...
Dark Energy Constraints from the CTIO Lensing Survey (2005)
Jarvis, Mike, Jain, Bhuvnesh, Bernstein, Gary, Dolney, Derek
We perform a cosmological parameter analysis of the 75 square degree CTIO lensing survey in conjunction with CMB and Type Ia supernovae data. For Lambda CDM cosmologies, we find that the amplitude of...
Weak Lensing from Space II: Dark Matter Mapping (2003)
Massey, Richard, Rhodes, Jason, Refregier, Alexandre, Albert, Justin, Bacon, David, Bernstein, Gary, ...
We study the accuracy with which weak lensing measurements could be made from a future space-based survey, predicting the subsequent precisions of 3-dimensional dark matter maps, projected...
Weak Lensing from Space III: Cosmological Parameters (2003)
Refregier, Alexandre, Massey, Richard, Rhodes, Jason, Ellis, Richard, Albert, Justin, Bacon, David, ...
Weak gravitational lensing provides a unique method to directly map the dark matter in the universe and measure cosmological parameters. Current weak lensing surveys are limited by the atmospheric...
Observational Limits on a Cold Distant Kuiper Belt (2002)
Allen, R. Lynne, Bernstein, Gary, Malhotra, Renu
Almost all of the $>600$ known Kuiper belt objects (KBOs) have been discovered within 50 AU of the Sun. One possible explanation for the observed lack of KBOs beyond 50 AU is that the distant Kuiper...
Advanced Exposure-Time Calculations (2001)
The familiar tools of Fourier analysis and Fisher matrices are applied to derive the uncertainties on photometric, astrometric, and weak-lensing measurements of stars and galaxies in real...
The Edge of the Solar System (2000)
Allen, R. Lynne, Bernstein, Gary, Malhotra, Renu
The population of the Kuiper Belt within 50 AU of the Sun has likely been severely depleted by gravitational perturbations from the giant planets, particularly Neptune. The density of Kuiper Belt...
Wittman, David, Dell'Antonio, Ian, Tyson, Tony, Bernstein, Gary, Fischer, Philippe, Smith, Deano
We present a survey of mass profiles and mass-to-light ratios of eight typical galaxy clusters at a common redshift (z ~ 0.2). We use weak gravitational lensing as a probe because it is unique in...
Wittman, David M., Tyson, J. Anthony, Kirkman, David, Dell'Antonio, Ian, Bernstein, Gary
Most of the matter in the universe is not luminous and can be observed directly only through its gravitational effect. An emerging technique called weak gravitational lensing uses background galaxies...
Values of H_0 from Models of the Gravitational Lens 0957+561 (1999)
Bernstein, Gary, Fischer, Philippe
The lensed double QSO 0957+561 has a well-measured time delay and hence is useful for a global determination of H0. Uncertainty in the mass distribution of the lens is the largest source of...
An Extremely red r^{1/4} galaxy in the test image of the Hubble Deep Field South (1998)
Treu, Tommaso, Stiavelli, Massimo, Walker, Alistair, Williams, Robert, Baum, Stefi, Bernstein, Gary, ...
Also archived in: arXiv: astro-ph/9808282 v1 25 Aug 1998
An extremely red r^{1/4} galaxy in the test image of the Hubble Deep Field South (1998)
Treu, Tommaso, Stiavelli, Massimo, Walker, Alistair, Williams, Robert, Baum, Stefi, Bernstein, Gary, ...
Also archived in: arXiv: astro-ph/9808282 v1 25 Aug 1998
Electromigration and Local Field Effects in Mesoscopic Interconnects (1998)
Samples were fabricated by the same processes as the previous ones, but with triangular e-beam pads. Validity of the test structure was first examined. After stressing groups of 40 nm and 50 nm wide...
Improved Parameters and New Lensed Features for Q0957+561 from WFPC2 Imaging (1997)
Bernstein, Gary, Fischer, Philippe, Tyson, J. Anthony, Rhee, George
New HST WFPC2 observations of the lensed double QSO 0957+561 will allow improved constraints on the lens mass distribution and hence will improve the derived value of H$_0$. We first present improved...
The Mass distribution of the Cluster 0957+561 from Gravitational Lensing (1996)
Fischer, Philippe, Bernstein, Gary, Rhee, George, Tyson, J. Anthony
Multiply gravitationally lensed objects with known time delays can lead to direct determinations of H$_0$ independent of the distance ladder if the mass distribution of the lens is known. Currently,...
Gary Bernstein, George Rhee, J. Anthony Tyson
Multiply gravitationally lensed objects with known time delays can lead to direct determinations of H 0 independent of the distance ladder if the mass distribution of the lens is known. Currently,...
A psychometric assessment of incestuous family systems / (1989)
Thesis (Ph. D.)--State University of New York at Buffalo, 1989.
Selective Binding, Self-Assembly and Nanopatterning of the Creutz-Taube Ion on Surfaces
Wang, Yuliang, Lieberman, Marya, Hang, Qingling, Bernstein, Gary
The surface attachment properties of the Creutz-Taube ion, i.e., [(NH3)5Ru(pyrazine)Ru(NH3)5]5+, on both hydrophilic and hydrophobic types of surfaces were investigated using X-ray photoelectron...