3 papers
astro-ph.CO2025
Rapid and accurate numerical evolution of linear cosmological perturbations with non-cold relics
Nanoom Lee, José Luis Bernal, Sven Günther +2
We describe the implementation of a new approach to the numerical evaluation of the effects of non-cold relics on the evolution of cosmological perturbations. The Boltzmann hierarc…
astro-ph.CO2024
Linear polarization of the stochastic gravitational-wave background with pulsar timing arrays
Neha Anil Kumar, Mesut ÃalıÅkan, Gabriela Sato-Polito +2
Pulsar-timing collaborations have recently reported evidence for the detection of an isotropic stochastic gravitational-wave background consistent with one sourced by a population…
astro-ph.CO2024
Probing wave-optics effects and low-mass dark matter halos with lensing of gravitational waves from massive black holes
Mesut ÃalıÅkan, Neha Anil Kumar, Lingyuan Ji +4
The Laser Interferometer Space Antenna (LISA) will detect gravitational waves (GWs) emitted by massive black hole binaries (MBHBs) in the low-frequency (mHz) band. Low-mass l…