Publications (28)
Spurious shear induced by the tree rings of the LSST CCDs
Yuki Okura, Andrés A. Plazas, Morgan May +1
We present an analysis of the impact of the tree rings seen in the candidate sensors of the Large Synoptic Survey Telescope (LSST) on galaxy-shape measurements. The tree rings are…
Consequences of CCD imperfections for cosmology determined by weak lensing surveys: From laboratory measurements to cosmological parameter bias
Yuki Okura, Andrea Petri, Morgan May +2
Weak gravitational lensing causes subtle changes in the apparent shapes of galaxies due to the bending of light by the gravity of foreground masses. By measuring the shapes of larg…
Growth of Cosmic Structure: Probing Dark Energy Beyond Expansion
Dragan Huterer, David Kirkby, Rachel Bean +18
The quantity and quality of cosmic structure observations have greatly accelerated in recent years. Further leaps forward will be facilitated by imminent projects, which will enabl…
Constraining the Evolution of Dark Energy with a Combination of Galaxy Cluster Observables
Sheng Wang, Justin Khoury, Zoltan Haiman +1
We show that the abundance and redshift distribution () of galaxy clusters in future high--yield cluster surveys, combined with the spatial power spectrum () of the…
Astro 2020 Science White Paper: Joint Gravitational Wave and Electromagnetic Astronomy with LIGO and LSST in the 2020's
Philip S. Cowperthwaite, Hsin-Yu Chen, Ben Margalit +4
The blossoming field of joint gravitational wave and electromagnetic (GW-EM) astronomy is one of the most promising in astronomy. The first, and only, joint GW-EM event GW170817 pr…
Cosmology Constraints from the Weak Lensing Peak Counts and the Power Spectrum in CFHTLenS
Jia Liu, Andrea Petri, Zoltan Haiman +3
Lensing peaks have been proposed as a useful statistic, containing cosmological information from non-Gaussianities that is inaccessible from traditional two-point statistics such a…
Emulating the CFHTLenS Weak Lensing data: Cosmological Constraints from moments and Minkowski functionals
Andrea Petri, Jia Liu, Zoltan Haiman +3
Weak gravitational lensing is a powerful cosmological probe, with non--Gaussian features potentially containing the majority of the information. We examine constraints on the param…
Challenges to the DGP Model from Horizon-Scale Growth and Geometry
Wenjuan Fang, Sheng Wang, Wayne Hu +3
We conduct a Markov Chain Monte Carlo study of the Dvali-Gabadadze-Porrati (DGP) self-accelerating braneworld scenario given the cosmic microwave background (CMB) anisotropy, super…
Baryon impact on weak lensing peaks and power spectrum: low-bias statistics and self-calibration in future surveys
Xiuyuan Yang, Jan M. Kratochvil, Kevin Huffenberger +2
Peaks in two-dimensional weak lensing (WL) maps contain significant cosmological information, complementary to the WL power spectrum. This has recently been demonstrated using N-bo…
The impact of spurious shear on cosmological parameter estimates from weak lensing observables
Andrea Petri, Morgan May, Zoltan Haiman +1
Residual errors in shear measurements, after corrections for instrument systematics and atmospheric effects, can impact cosmological parameters derived from weak lensing observatio…
The Impact of Magnification and Size Bias on Weak Lensing Power Spectrum and Peak Statistics
Jia Liu, Zoltán Haiman, Lam Hui +2
The weak lensing power spectrum is a powerful tool to probe cosmological parameters. Additionally, lensing peak counts contain cosmological information beyond the power spectrum. B…
Cosmology with Minkowski functionals and moments of the weak lensing convergence field
Andrea Petri, Zoltán Haiman, Lam Hui +2
We compare the efficiency of moments and Minkowski functionals (MFs) in constraining the subset of cosmological parameters (Omega_m,w,sigma_8) using simulated weak lensing converge…
Probing Cosmology with Weak Lensing Minkowski Functionals
Jan M. Kratochvil, Eugene A. Lim, Sheng Wang +3
In this paper, we show that Minkowski Functionals (MFs) of weak gravitational lensing (WL) convergence maps contain significant non-Gaussian, cosmology-dependent information. To do…
Cosmological Information in Weak Lensing Peaks
Xiuyuan Yang, Jan M. Kratochvil, Sheng Wang +3
Recent studies have shown that the number counts of convergence peaks N(kappa) in weak lensing (WL) maps, expected from large forthcoming surveys, can be a useful probe of cosmolog…
Constraining Cosmology with High Convergence Regions in Weak Lensing Surveys
Sheng Wang, Zoltán Haiman, Morgan May
We propose to use a simple observable, the fractional area of "hot spots" in weak gravitational lensing mass maps which are detected with high significance, to determine background…
High Shear Regions in Weak Lensing Surveys Determine Cosmology
Sheng Wang, Zoltan Haiman, Morgan May +1
We propose to use a simple observable, the fractional area of "hot spots" in weak lensing mass maps which are detected with high significance, to determine background cosmological…
The Vera C. Rubin Observatory Data Preview 1
Vera C Rubin Observatory Team, Tatiana Acero Cuellar, Emily Acosta +325
We present Rubin Data Preview 1 DP1, the first data from the NSF DOE Vera C Rubin Observatory, comprising raw and calibrated single epoch images, coadds, difference images, detecti…
Anisotropic Extinction Distortion of the Galaxy Correlation Function
Wenjuan Fang, Lam Hui, Brice Menard +2
Similar to the magnification of the galaxies' fluxes by gravitational lensing, the extinction of the fluxes by comic dust, whose existence is recently detected by Menard et al (200…
Probing Cosmology with Weak Lensing Peak Counts
Jan M. Kratochvil, Zoltán Haiman, Morgan May
We propose counting peaks in weak lensing (WL) maps, as a function of their height, to probe models of dark energy and to constrain cosmological parameters. Because peaks can be id…
Is Modified Gravity Required by Observations? An Empirical Consistency Test of Dark Energy Models
Sheng Wang, Lam Hui, Morgan May +1
We apply the technique of parameter-splitting to existing cosmological data sets, to check for a generic failure of dark energy models. Given a dark energy parameter, such as the e…
On the validity of the Born approximation for beyond-Gaussian weak lensing observables
Andrea Petri, Zoltán Haiman, Morgan May
Accurate forward modeling of weak lensing (WL) observables from cosmological parameters is necessary for upcoming galaxy surveys. Because WL probes structures in the non-linear reg…
Enabling Early Transient Discovery in LSST via Difference Imaging with DECam
Yize Dong, Kaylee de Soto, V. Ashley Villar +58
We present SLIDE, a pipeline that enables transient discovery in data from the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST), using archival images from the Da…
Target of Opportunity Observations of Gravitational Wave Events with Vera C. Rubin Observatory
Igor Andreoni, Raffaella Margutti, Om Sharan Salafia +52
The discovery of the electromagnetic counterpart to the binary neutron star merger GW170817 has opened the era of gravitational-wave multi-messenger astronomy. Rapid identification…
Weighing Neutrinos with Galaxy Cluster Surveys
Sheng Wang, Zoltan Haiman, Wayne Hu +2
Large future galaxy cluster surveys, combined with cosmic microwave background observations, can achieve a high sensitivity to the masses of cosmologically important neutrinos. We…
LSST: from Science Drivers to Reference Design and Anticipated Data Products
Željko IveziÄ, Steven M. Kahn, J. Anthony Tyson +310
(Abridged) We describe here the most ambitious survey currently planned in the optical, the Large Synoptic Survey Telescope (LSST). A vast array of science will be enabled by a sin…
Sample variance in weak lensing: how many simulations are required?
Andrea Petri, Zoltán Haiman, Morgan May
Constraining cosmology using weak gravitational lensing consists of comparing a measured feature vector of dimension with its simulated counterpart. An accurate estimate of t…
Cosmology with photometric weak lensing surveys: constraints with redshift tomography of convergence peaks and moments
Andrea Petri, Morgan May, Zoltán Haiman
Weak gravitational lensing is becoming a mature technique for constraining cosmological parameters, and future surveys will be able to constrain the dark energy equation of state $…
LSST Science Book, Version 2.0
LSST Science Collaboration, Paul A. Abell, Julius Allison +245
A survey that can cover the sky in optical bands over wide fields to faint magnitudes with a fast cadence will enable many of the exciting science opportunities of the next decade.…