4 papers
Fisher Forecasting for the DESC with
Paul Rogozenski, Sankarshana Srinivasan, Javier Sánchez +15
The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) has begun its ten-year survey of the entire visible southern hemisphere. To ensure robust cosmological measurem…
Catching the Cosmic Sign Flip: Background and Growth Tests of Smooth Sign Switching Lambda_s CDM
Ayan Mitra
Recent baryon acoustic oscillation (BAO) measurements from the Dark Energy Spectroscopic Instrument (DESI), in combination with CMB and supernova data, show a mild preference for d…
Litmus tests of the flat CDM model and model-independent measurement of with LSST and DESI
Benjamin L'Huillier, Ayan Mitra, Arman Shafieloo +2
In this analysis we apply a model-independent framework to test the flat CDM cosmology using simulated SNIa data from the upcoming Legacy Survey of Space and Time (LSST) and com…
Exploring Alternative Cosmologies with the LSST: Simulated Forecasts and Current Observational Constraints
Dharmendra Kumar, Ayan Mitra, Shahnawaz A. Adil +1
In recent years, the Lambda Cold Dark Matter (LCDM) model, which has been pivotal in cosmological studies, has faced significant challenges due to emerging observational and theore…