46 citations · 301 across the 11 of their papers we have counts for
8 papers · 1 filter
Dynamical cluster masses from photometric surveys
Omar Contigiani, Henk Hoekstra, Margot M. Brouwer +5
The masses of galaxy clusters can be measured using data obtained exclusively from wide photometric surveys in one of two ways: directly from the amplitude of the weak lensing sign…
Learning how to surf: Reconstructing the propagation and origin of gravitational waves with Gaussian Processes
Guadalupe Cañas-Herrera, Omar Contigiani, Valeri Vardanyan
Soon, the combination of electromagnetic and gravitational signals will open the door to a new era of gravitational-wave (GW) cosmology. It will allow us to test the propagation of…
The mass-size relation of galaxy clusters
O. Contigiani, Y. M. Bahé, H. Hoekstra
The outskirts of accreting dark matter haloes exhibit a sudden drop in density delimiting their multi-stream region. Due to the dynamics of accretion, the location of this physical…
Lensing efficiency for gravitational wave mergers
O. Contigiani
We gain insight into the effects of gravitational lensing on the estimated distribution of merging binaries observed through gravitational waves. We quantify the efficiency of magn…
Cross-correlation of the astrophysical gravitational-wave background with galaxy clustering
Guadalupe Cañas-Herrera, Omar Contigiani, Valeri Vardanyan
We investigate the correlation between the distribution of galaxies and the predicted gravitational-wave background of astrophysical origin. We show that the large angular scale an…
The splashback radius in symmetron gravity
Omar Contigiani, Valeri Vardanyan, Alessandra Silvestri
The splashback radius has been identified in cosmological -body simulations as an important scale associated with gravitational collapse and the phase-space dist…
Weak lensing constraints on splashback around massive clusters
O. Contigiani, H. Hoekstra, Y. M. Bahé
The splashback radius separates the physical regimes of collapsed and infalling material around massive dark matter haloes. In cosmological simulations, this location…
Radio Galaxy Zoo: Cosmological Alignment of Radio Sources
O. Contigiani, F. de Gasperin, G. K. Miley +6
We study the mutual alignment of radio sources within two surveys, FIRST and TGSS. This is done by producing two position angle catalogues containing the preferential directions of…