163 citations · 836 across the 14 of their papers we have counts for
14 papers
MassiveNuS: Cosmological Massive Neutrino Simulations
Jia Liu, Simeon Bird, José Manuel Zorrilla Matilla +5
The non-zero mass of neutrinos suppresses the growth of cosmic structure on small scales. Since the level of suppression depends on the sum of the masses of the three active neutri…
Geometry and growth contributions to cosmic shear observables
José Manuel Zorrilla Matilla, Zoltán Haiman, Andrea Petri +1
We explore the sensitivity of weak lensing observables to the expansion history of the universe and to the growth of cosmic structures, as well as the relative contribution of both…
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…
Do dark matter halos explain lensing peaks?
José Manuel Zorrilla Matilla, Zoltán Haiman, Daniel Hsu +2
We have investigated a recently proposed halo-based model, Camelus, for predicting weak-lensing peak counts, and compared its results over a collection of 162 cosmologies with thos…
CMB Lensing Beyond the Power Spectrum: Cosmological Constraints from the One-Point PDF and Peak Counts
Jia Liu, J. Colin Hill, Blake D. Sherwin +3
Unprecedentedly precise cosmic microwave background (CMB) data are expected from ongoing and near-future CMB Stage-III and IV surveys, which will yield reconstructed CMB lensing ma…
Mocking the Weak Lensing universe: the LensTools python computing package
Andrea Petri
We present a newly developed software package which implements a wide range of routines frequently used in Weak Gravitational Lensing (WL). With the continuously increasing size of…
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 $…
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…
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…
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…
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…
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…
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…
Supermassive black hole ancestors
Andrea Petri, Andrea Ferrara, Ruben Salvaterra
We study a model in which supermassive black holes (SMBHs) can grow by the combined action of gas accretion on heavy seeds and mergers of both heavy (m_s^h=10^5 Msol) and light (m_…