3 papers
astro-ph.CO2026
Weak Lensing by Photometric Density Ridges
Mehraveh Nikjoo, Joe Zuntz, Ben Moews
Ridges in galaxy density fields measured by photometric surveys are 2D projections of filaments in the cosmic web, and so should lens light from background galaxies. We report on a…
astro-ph.CO2024
Tomographic constraints on the production rate of gravitational waves from astrophysical sources
David Alonso, Mehraveh Nikjoo, Arianna I. Renzini +2
Using an optimal quadratic estimator, we measure the large-scale cross-correlation between maps of the stochastic gravitational-wave intensity, constructed from the first three LIG…
gr-qc2023
Hamiltonian formulation of gravity as a spontaneously-broken gauge theory of the Lorentz group
Mehraveh Nikjoo, Tom Zlosnik
A number of approaches to gravitation have much in common with the gauge theories of the standard model of particle physics. In this paper, we develop the Hamiltonian formulation o…