6 papers
General Relativistic Effects in Weak Lensing Angular Power Spectra
Nastassia Grimm, Jaiyul Yoo
Advances in upcoming weak lensing surveys pose new challenges for an accurate modeling of the lensing observables. The wide sky coverage of Euclid makes angular scales down to $l_\…
Cutting out the cosmological middle man: General Relativity in the light-cone coordinates
Ermis Mitsou, Giuseppe Fanizza, Nastassia Grimm +1
Analytical computations in relativistic cosmology can be split into two sets: time evolution relating the initial conditions to the observer's light-cone and light propagation to o…
Galaxy Power Spectrum in General Relativity
Nastassia Grimm, Fulvio Scaccabarozzi, Jaiyul Yoo +2
We present the galaxy power spectrum in general relativity. Using a novel approach, we derive the galaxy power spectrum taking into account all the relativistic effects in observat…
Cosmological Information Contents on the Light-Cone
Jaiyul Yoo, Ermis Mitsou, Nastassia Grimm +2
We develop a theoretical framework to describe the cosmological observables on the past light cone such as the luminosity distance, weak lensing, galaxy clustering, and the cosmic…
Jacobi Mapping Approach for a Precise Cosmological Weak Lensing Formalism
Nastassia Grimm, Jaiyul Yoo
Cosmological weak lensing has been a highly successful and rapidly developing research field since the first detection of cosmic shear in 2000. However, it has recently been pointe…
Gauge-Invariant Formalism of Cosmological Weak Lensing
Jaiyul Yoo, Nastassia Grimm, Ermis Mitsou +2
We present the gauge-invariant formalism of cosmological weak lensing, accounting for all the relativistic effects due to the scalar, vector, and tensor perturbations at the linear…