4 papers
Modeling the impact of filter-substrate refraction in the Roman point spread function
Federico Berlfein, Rachel Mandelbaum, Tianqing Zhang +4
For broadband imaging surveys, filter-substrate refraction causes light at different wavelengths to follow slightly different paths through the filter substrate before reaching the…
The kSZ optical depth degeneracy and future constraints on local primordial non-Gaussianity
Avery J. Tishue, Charuhas Shiveshwarkar, Gilbert Holder
Recent reconstructions of the large-scale cosmological velocity field with kinetic Sunyaev Zeldovich (kSZ) tomography have returned an amplitude that is low with respect to the hal…
Where does non-Universality in Assembly Bias come from?
Charuhas Shiveshwarkar, Marilena Loverde, Christopher M. Hirata +1
Constraints on local primordial non-Gaussianity (LPnG) obtained from galaxy power spectra are limited by the perfect degeneracy between the LPnG parameter and the bias…
Constraining general multi-field inflation using the SPHEREx all-sky survey
Charuhas Shiveshwarkar, Thejs Brinckmann, Marilena Loverde
We investigate how well the SPHEREx all-sky survey can constrain local primordial non-Gaussianity beyond the parameter using galaxy power spectra. We forecast joint…