30 citations · 90 across the 6 of their papers we have counts for
7 papers
Sound-Horizon-Agnostic Forecast for Constraints on and from BAO, CMB Lensing, Supernovae and LSST-like Galaxy Lensing
Seyed Hamidreza Mirpoorian, Helena García Escudero, Levon Pogosian +2
We present a sound-horizon-agnostic forecast for constraints on the Hubble constant and the sum of the neutrino masses from a combination of LSST-like galaxy weak lens…
Cosmological Impact of Redshift-Dependent Type Ia Supernovae Calibration
Seyed Hamidreza Mirpoorian, Meng-Xiang Lin, Levon Pogosian
Type Ia supernovae (SNIa) play a central role in constraining the late-time expansion history of the Universe and are directly implicated in current cosmological tensions. Motivate…
Sound-Horizon-Agnostic Inference of the Hubble Constant and Neutrino Mass from BAO, CMB Lensing, and Galaxy Weak Lensing and Clustering
Helena García Escudero, Seyed Hamidreza Mirpoorian, Levon Pogosian
We present a sound-horizon-agnostic determination of the Hubble constant, , by combining DESI DR2 baryon acoustic oscillation (BAO) data with the latest cosmic microwave backg…
Is Dynamical Dark Energy Necessary? DESI BAO and Modified Recombination
Seyed Hamidreza Mirpoorian, Karsten Jedamzik, Levon Pogosian
Recent measurements of baryon acoustic oscillations (BAO) by the Dark Energy Spectroscopic Instrument (DESI) exhibit a mild-to-moderate tension with cosmic microwave background (CM…
Modified recombination and the Hubble tension
Seyed Hamidreza Mirpoorian, Karsten Jedamzik, Levon Pogosian
We investigate the extent to which modifying the ionization history at cosmological recombination can relieve the Hubble tension, taking into account all relevant datasets and cons…
New MGCAMB tests of gravity with CosmoMC and Cobaya
Zhuangfei Wang, Seyed Hamidreza Mirpoorian, Levon Pogosian +2
We present a new version of MGCAMB, a patch for the Einstein-Boltzmann solver CAMB for cosmological tests of gravity. New features include a new cubic-spline parameterization allow…
On validity of the quasi-static approximation in scalar-tensor theories
Seyed Hamidreza Mirpoorian, Zhuangfei Wang, Levon Pogosian
The discovery of cosmic acceleration motivated extensive studies of dynamical dark energy and modified gravity models. Of particular interest are the scalar-tensor theories, with a…