Bhuvnesh Jain

Telescope Optics and Weak Lensing: PSF Patterns due to Low Order Aberrations (2008)

The weak lensing power spectrum carries cosmological information via its dependence on the growth of structure and on geometric factors. Since much of the cosmological information comes from scales...

Jarvis, Mike, Schechter, Paul, Jain, Bhuvnesh

In weak lensing investigations, galaxy shapes are deconvolved for the effects of the point spread function (PSF) using stellar images. In this paper we use physical models of the telescope optics to...

Weak Gravitational Lensing and its Cosmological Applications (2008)

Hoekstra, Henk, Jain, Bhuvnesh

Weak gravitational lensing is a unique probe of the dark side of the universe: it provides a direct way to map the distribution of dark matter around galaxies, clusters of galaxies and on...

Photometric Redshifts with Surface Brightness Priors (2007)

Stabenau, Hans F., Connolly, Andrew, Jain, Bhuvnesh

We use galaxy surface brightness as prior information to improve photometric redshift (photo-z) estimation. We apply our template-based photo-z method to imaging data from the ground-based VVDS...

Cosmic shear and halo abundances: Analytical versus numerical results (2007)

Katrin Reblinsky Guido, Guido Kruse, Bhuvnesh Jain, Peter Schneider

. The aperture mass has been shown in a series of recent publications to be a useful quantitative tool for weak lensing studies, ranging from cosmic shear to the detection of a mass-selected sample...

Simulating Weak Lensing By Large-Scale Structure (2007)

Bhuvnesh Jain, Uros Seljak, Simon White

. We use numerical simulations of ray tracing through N-body simulations to investigate weak lensing by large-scale structure. Here we focus on the reconstruction of statistics of the convergence...

The Non-Linear Correlation Function and Density Profiles of Virialized Halos (2007)

Ravi Sheth, Bhuvnesh Jain

The correlation function ¸(r) of matter in the non-linear regime is assumed to be determined by the density profiles ae(r) and the mass distribution n(M) of virialized halos. The Press--Schechter...

Observational Tests of Modified Gravity (2007)

Jain, Bhuvnesh, Zhang, Pengjie

Modified gravity theories have richer observational consequences for large-scale structure than conventional dark energy models, in that different observables are not described by a single growth...

On Combining Lensing Shear Information from Multiple Filters (2007)

Jarvis, Mike, Jain, Bhuvnesh

We consider the possible gain in the measurement of lensing shear from imaging data in multiple filters. Galaxy shapes may differ significantly across filters, so that the same galaxy offers multiple...

Cosmological constraints from the SDSS luminous red galaxies (2006)

Tegmark, Max, Eisenstein, Daniel J., Strauss, Michael A., Weinberg, David H., Blanton, Michael R., Frieman, Joshua A., ...

We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological...

Cosmological constraints from the SDSS Luminous Red Galaxies (2006)

Tegmark, Max, Eisenstein, Daniel, Strauss, Michael, Weinberg, David, Blanton, Michael, Frieman, Joshua, ...

Also archived in: arXiv:astro-ph/0608632 v2 Oct 30 2006

Color Tomography (2006)

Jain, Bhuvnesh, Connolly, Andrew, Takada, Masahiro

Lensing tomography with multi-color imaging surveys can probe dark energy and the cosmological power spectrum. However accurate photometric redshifts for tomography out to high redshift require...

N-Body Simulations of Alternate Gravity Models (2006)

Stabenau, Hans F., Jain, Bhuvnesh

Theories in which gravity is weaker on cosmological scales have been proposed to explain the observed acceleration of the universe. The nonlinear regime in such theories is not well studied, though...

Short GRB and binary black hole standard sirens as a probe of dark energy (2006)

Dalal, Neal, Holz, Daniel E., Hughes, Scott A., Jain, Bhuvnesh

Observations of the gravitational radiation from well-localized, inspiraling compact object binaries can measure absolute source distances with high accuracy. When coupled with an independent...

Cosmological constraints from the SDSS luminous red galaxies (2006)

Tegmark, Max, Eisenstein, Daniel J., Strauss, Michael A., Weinberg, David H., Blanton, Michael R., Frieman, Joshua A., ...

We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological...

Cosmological constraints from the SDSS luminous red galaxies (2006)

Tegmark, Max, Eisenstein, Daniel J., Strauss, Michael A., Weinberg, David H., Blanton, Michael R., Frieman, Joshua A., ...

We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological...

Cosmological constraints from the SDSS luminous red galaxies (2006)

Tegmark, Max, Eisenstein, Daniel J., Strauss, Michael A., Weinberg, David H., Blanton, Michael R., Frieman, Joshua A., ...

We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological...

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...

Dark Energy Studies: Challenges to Computational Cosmology (2005)

Annis, James, Castander, Francisco J., Evrard, August E., Frieman, Joshua A., Gaztanaga, Enrique, Jain, Bhuvnesh, ...

The ability to test the nature of dark mass-energy components in the universe through large-scale structure studies hinges on accurate predictions of sky survey expectations within a given world...

Constraining Dark Energy with the Dark Energy Survey: Theoretical Challenges (2005)

Annis, James, Bridle, Sarah, Castander, Francisco J., Evrard, August E., Fosalba, Pablo, Frieman, Joshua A., ...

The Dark Energy Survey (DES) will use a new imaging camera on the Blanco 4-m telescope at CTIO to image 5000 square degrees of sky in the South Galactic Cap in four optical bands, and to carry out...

Systematic Errors in Future Weak Lensing Surveys: Requirements and Prospects for Self-Calibration (2005)

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...

Detection of Cosmic Magnification with the Sloan Digital Sky Survey (2005)

Scranton, Ryan, Menard, Brice, Richards, Gordon T., Nichol, Robert C., Myers, Adam D., Jain, Bhuvnesh, ...

We present an 8 sigma detection of cosmic magnification measured by the variation of quasar density due to gravitational lensing by foreground large scale structure. To make this measurement we used...

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...

Constraints on dark energy models from galaxy clusters with multiple arcs (2005)

Meneghetti, Massimo, Jain, Bhuvnesh, Bartelmann, Matthias, Dolag, Klaus

Principal Component Analysis of PSF Variation in Weak Lensing Surveys (2004)

Jarvis, Mike, Jain, Bhuvnesh

We introduce a new algorithm for interpolating measurements of the point-spread function (PSF) using stars from many exposures. The principal components of the variation in the PSF pattern from...

Baryon Oscillations and Dark-Energy Constraints from Imaging Surveys (2004)

Dolney, Derek, Jain, Bhuvnesh, Takada, Masahiro

Baryonic oscillations in the galaxy power spectrum have been studied as a way of probing dark-energy models. While most studies have focused on spectroscopic surveys at high redshift, large...

Constraints on Dark Energy Models from Galaxy Clusters with Multiple Arcs (2004)

Meneghetti, Massimo, Jain, Bhuvnesh, Bartelmann, Matthias, Dolag, Klaus

We make an exploratory study of how well dark energy models can be constrained using lensed arcs at different redshifts behind cluster lenses. Arcs trace the critical curves of clusters, and the...

Three-point Correlation Functions of SDSS Galaxies in Redshift Space: Morphology, Color, and Luminosity Dependence (2004)

Kayo, Issha, Suto, Yasushi, Nichol, Robert C., Pan, Jun, Szapudi, Istvan, Connolly, Andrew J., ...

We present measurements of the redshift--space three-point correlation function of galaxies in the Sloan Digital Sky Survey (SDSS). For the first time, we analyze the dependence of this statistic on...

Cosmological Parameters from Eigenmode Analysis of Sloan Digital Sky Survey Galaxy Redshifts (2004)

Pope, Adrian C., Matsubara, Takahiko, Szalay, Alexander S., Blanton, Michael R., Eisenstein, Daniel J., Gray, Jim, ...

We present estimates of cosmological parameters from the application of the Karhunen-Loeve transform to the analysis of the 3D power spectrum of density fluctuations using Sloan Digital Sky Survey...

Effects of halo substructure on the power spectrum and bispectrum (2004)

Dolney, Derek, Jain, Bhuvnesh, Takada, Masahiro

We study the effects of halo substructure and a distribution in the concentration parameter of haloes on large-scale structure statistics. The effects on the power spectrum and bispectrum are studied...

Joint Galaxy-Lensing Observables and the Dark Energy (2003)

Hu, Wayne, Jain, Bhuvnesh

Deep multi-color galaxy surveys with photometric redshifts will provide a large number of two-point correlation observables: galaxy-galaxy angular correlations, galaxy-shear cross correlations, and...

Cosmological parameters from lensing power spectrum and bispectrum tomography (2003)

Cross-correlation Tomography: Measuring Dark Energy Evolution with Weak Lensing (2003)

We examine how lensing tomography with the bispectrum and power spectrum can constrain cosmological parameters and the equation of state of dark energy. Our analysis uses the full information at the...

Jain, Bhuvnesh, Taylor, Andy

A cross-correlation technique of lensing tomography is presented to measure the evolution of dark energy in the universe. The variation of the weak lensing shear with redshift around massive...

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...

Quasar-Galaxy and Galaxy-Galaxy Cross-Correlations: Model Predictions with Realistic Galaxies (2003)

Jain, Bhuvnesh, Scranton, Ryan, Sheth, Ravi K.

Several measurements of QSO-galaxy correlations have reported signals much larger than predictions of magnification by large-scale structure. We find that the expected signal depends stronly on the...

Three-Point Correlations in Weak Lensing Surveys: Model Predictions and Applications (2003)

The last stand before MAP: cosmological parameters from lensing, CMB and galaxy clustering (2002)

We use the halo model of clustering to compute two- and three-point correlation functions for weak lensing, and apply them in a new statistical technique to measure properties of massive halos. We...

Wang, Xiaomin, Tegmark, Max, Jain, Bhuvnesh, Zaldarriaga, Matias

Cosmic shear measurements have now improved to the point where they deserve to be treated on par with CMB and galaxy clustering data for cosmological parameter analysis, using the full measured...

The Three-Point Correlation Function for Spin-2 Fields (2002)

The Three-Point Correlation Function in Cosmology (2002)

The three-point correlation function (3PCF) of the spin-2 fields, the cosmic shear and cosmic microwave background polarization fields, is a statistical measure of non-Gaussian signals. At each...

Magnification effects as measures of large-scale structure (2002)

With the advent of high-quality surveys in cosmology the full three-point correlation function will be a valuable statistic for describing structure formation models. It contains information on...

Substructure and the halo model of large-scale structure (2002)

The magnification effects of clustered matter produce variations in the image sizes and number density of galaxies across the sky. This paper advocates the use of these effects in wide field surveys...

Sheth, Ravi K., Jain, Bhuvnesh

We develop the formalism to include substructure in the halo model of clustering. Real halos are not likely to be perfectly smooth, but have substructure which has so far been neglected in the halo...

The Kurtosis of the Cosmic Shear Field (2002)

Analysis of Systematic Effects and Statistical Uncertainties in Angular Clustering of Galaxies from Early SDSS Data (2001)

We study the fourth-order moment of the cosmic shear field using the dark matter halo approach to describe the nonlinear gravitational evolution of structure in the universe. Since the third-order...

Collaboration, SDSS, Scranton, Ryan, Johnston, David, Dodelson, Scott, Frieman, Joshua A., Connolly, Andy, ...

The angular distribution of galaxies encodes a wealth of information about large scale structure. Ultimately, the Sloan Digital Sky Survey (SDSS) will record the angular positions of order 10^8...

The Angular Correlation Function of Galaxies from Early SDSS Data (2001)

Collaboration, SDSS, Connolly, Andrew, Scranton, Ryan, Johnston, David, Dodelson, Scott, Eisenstein, Daniel, ...

The Sloan Digital Sky Survey is one of the first multicolor photometric and spectroscopic surveys designed to measure the statistical properties of galaxies within the local Universe. In this Letter...

The Angular Power Spectrum of Galaxies from Early SDSS Data (2001)

Collaboration, SDSS, Tegmark, Max, Dodelson, Scott, Eisenstein, Daniel, Narayanan, Vijay, Scoccimarro, Roman, ...

We compute the angular power spectrum C_l from 1.5 million galaxies in early SDSS data on large angular scales, l

KL Estimation of the Power Spectrum Parameters from the Angular Distribution of Galaxies in Early SDSS Data (2001)

Collaboration, SDSS, Szalay, Alexander S., Jain, Bhuvnesh, Matsubara, Takahiko, Scranton, Ryan, Vogeley, Michael S., ...

We present measurements of parameters of the 3-dimensional power spectrum of galaxy clustering from 222 square degrees of early imaging data in the Sloan Digital Sky Survey. The projected galaxy...

The 3D Power Spectrum from Angular Clustering of Galaxies in Early SDSS Data (2001)

Dodelson, Scott, Narayanan, Vijay K., Tegmark, Max, Scranton, Ryan, Budavari, Tamas, Connolly, Andrew, ...

Early photometric data from the Sloan Digital Sky Survey (SDSS) contain angular positions for 1.5 million galaxies. In companion papers, the angular correlation function $w(\theta)$ and 2D power...

The Topology of Weak Lensing Fields (2000)

Matsubara, Takahiko, Jain, Bhuvnesh

The topology of weak lensing fields is studied using the 2-dimensional genus statistic. Simulated fields of the weak lensing convergence are used to focus on the effect of nonlinear gravitional...

How Many Galaxies Fit in a Halo? Constraints on Galaxy Formation Efficiency from Spatial Clustering (2000)

Scoccimarro, Roman, Sheth, Ravi K., Hui, Lam, Jain, Bhuvnesh

We study galaxy clustering using halo models, where gravitational clustering is described in terms of dark matter halos. At small scales, clustering statistics are dominated by halo density profiles,...

Statistics of Weak Lensing at Small Angular Scales: Analytical Predictions for Lower Order Moments (1999)

Munshi, Dipak, Jain, Bhuvnesh

Weak lensing surveys are expected to provide direct measurements of the statistics of the projected dark matter distribution. Most analytical studies of weak lensing statistics have been limited to...

The Statistics of Weak Lensing at Small Angular Scales: Probability Distribution Function (1999)

Munshi, Dipak, Jain, Bhuvnesh

Weak gravitational lensing surveys have the potential to directly probe mass density fluctuation in the universe. Recent studies have shown that it is possible to model the statistics of the...

Statistics of Dark Matter Halos from Gravitational Lensing (1999)

Jain, Bhuvnesh, Van Waerbeke, Ludovic

We present a new approach to measure the mass function of dark matter halos and to discriminate models with differing values of Omega through weak gravitational lensing. We measure the distribution...

Cosmic shear and halo abundances: Analytical versus numerical results (1999)

Reblinsky, Katrin, Kruse, Guido, Jain, Bhuvnesh, Schneider, Peter

The aperture mass has been shown in a series of recent publications to be a useful quantitative tool for weak lensing studies, ranging from cosmic shear to the detection of a mass-selected sample of...

Simulating Weak Lensing by Clusters and Large-Scale Structure (1999)

Jain, Bhuvnesh, Seljak, Uros, White, Simon

Selected results on estimating cosmological parameters from simulated weak lensing data with noise are presented. Numerical simulations of ray tracing through N-body simulations have been used to...

Ray Tracing Simulations of Weak Lensing by Large-Scale Structure (1999)

Jain, Bhuvnesh, Seljak, Uros, White, Simon

We investigate weak lensing by large-scale structure using ray tracing through N-body simulations. Photon trajectories are followed through high resolution simulations of structure formation to make...

Numerical Investigations of Weak Lensing by Large-Scale Structure (1998)

The power spectrum P(k)\propto k^n with n=-2 is close to the shape of the measured galaxy spectrum on small scales. Unfortunately this spectrum has proven rather difficult to simulate. Further,...

Jain, Bhuvnesh, Seljak, Uros, White, Simon

We use numerical simulations of ray tracing through N-body simulations to investigate weak lensing by large-scale structure. These are needed for testing the analytic predictions of two-point...

How universal are the density profiles of dark halos? (1998)

Huss, Andreas, Jain, Bhuvnesh, Steinmetz, Matthias

We investigate the formation of virialized halos due to the gravitational collapse of collisionless matter using high-resolution N-body simulations. A variety of formation scenarios are studied,...

Angular Cross-Correlation of Galaxies: A Probe of Gravitational Lensing by Large-Scale Structure (1997)

Moessner, R., Jain, Bhuvnesh

The angular cross-correlation between two galaxy samples separated in redshift is shown to be a useful measure of weak lensing by large-scale structure. Angular correlations in faint galaxies arise...

A new measure for cosmic shear (1997)

Schneider, Peter, Van Waerbeke, Ludovic, Jain, Bhuvnesh, Kruse, Guido

We consider here a new statistical measure for cosmic shear, the aperture mass Map, which is defined as a spatially filtered projected density field and which can be measured directly from the image...

Cosmological Model Predictions for Weak Lensing: Linear and Nonlinear Regimes (1996)

Jain, Bhuvnesh, Seljak, Uros

Weak lensing by large scale structure induces correlated ellipticities in the images of distant galaxies. The two-point correlation is determined by the matter power spectrum along the line of sight....

Does Gravitational Clustering Stabilize On Small Scales? (1996)

The non-linear correlation function and the shapes of virialized halos (1996)

The stable clustering hypothesis is a key analytical anchor on the nonlinear dynamics of gravitational clustering in cosmology. It states that on sufficiently small scales the mean pair velocity...

Sheth, Ravi K., Jain, Bhuvnesh

The correlation function xi(r) of matter in the non-linear regime is assumed to be determined by the density profiles rho(r) and the mass distribution n(M) of virialized halos. The Press--Schechter...

Aspects of Scaling in Gravitational Clustering (1995)

The scaling ansatz of Hamilton et al. effectively extends the idea of self-similar scaling to initial power spectra of any generic shape. Applications of this ansatz have provided a semi-empirical...

The evolution of cosmological density fluctuations (1994)

The gravitational evolution of scale free initial spectra $P(k)\propto k^n$ in an Einstein-de Sitter universe is widely believed to be self-similar for $-3

The evolution of cosmological density fluctuations /--by Bhuvnesh Jain. (1994)

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.

Jain, Bhuvnesh.

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.

The evolution of cosmological density fluctuations (1994)

Second Order Power Spectrum and Nonlinear Evolution at High Redshift (1993)

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.

Nonlinear Effects due to the Coupling of Long-Wave Modes (1993)

The Eulerian cosmological fluid equations are used to study the nonlinear mode coupling of density fluctuations. We evaluate the second-order power spectrum including all four-point contributions. In...