5 papers
Cosmography for a General Spacetime Centred at Arbitrary Redshift
Jonas Broe Bendtsen, Asta Heinesen, Sofie Marie Koksbang
With upcoming surveys providing large volumes of highly precise observational data across a wide range of redshifts, it is increasingly important to have tools that can translate o…
Wave Optics Effects from Gravitational Wave Propagation Through Dark Matter Halos
Annamalai P. Shanmugaraj, Roland Haas, Erik Schnetter +1
Gravitational wave (GW) propagation is usually studied under the geometric optics approximation. But when GWs propagate through structures of sizes similar to their wavelength, thi…
Numerical evolution of Maxwell's equations for wavefronts propagating through a spherical gravitational potential
Annamalai P. Shanmugaraj, Erik Schnetter, Sofie Marie Koksbang
We present a scheme for numerically solving Maxwell's equations in a weakly perturbed spacetime without introducing the usual geometric optics approximation. Using this scheme, we…
cp3-bench: A tool for benchmarking symbolic regression algorithms tested with cosmology
Mattias E. Thing, Sofie M. Koksbang
We introduce cp3-bench, a tool for comparing symbolic regression algorithms which we make publicly available at https://github.com/CP3-Origins/cp3-bench. Currently, cp3-bench inclu…
On the convergence of cosmographic expansions in Lemaitre-Tolman-Bondi models
Asha B. Modan, S. M. Koksbang
We study cosmographic expansions of the luminosity distance for a variety of Lemaitre-Tolman-Bondi models which we specify inspired by local large-scale structures of the universe.…