Search Publications
SPT clusters with DES and HST weak lensing. II. Cosmological constraints from the abundance of massive halos
Sharon, K.; Gladders, M. D.; Ade, P. A. R. +195 more
We present cosmological constraints from the abundance of galaxy clusters selected via the thermal Sunyaev-Zel'dovich (SZ) effect in South Pole Telescope (SPT) data with a simultaneous mass calibration using weak gravitational lensing data from the Dark Energy Survey (DES) and the Hubble Space Telescope (HST). The cluster sample is constructed fro…
Standard siren measurement of the Hubble constant using GW170817 and the latest observations of the electromagnetic counterpart afterglow
Palmese, A.; Margutti, R.; Hajela, A. +3 more
We present a new constraint on the Hubble constant H0 using the latest measurements of the electromagnetic counterpart to the gravitational wave (GW) event GW170817. We use the latest optical, x-ray and radio observations of the afterglow up to ∼3.5 years after the GW detection, and properly take into account the impact of the host gala…
Exploring reheated sub-40000 Kelvin neutron stars with JWST, ELT, and TMT
Raj, Nirmal; Shivanna, Prajwal; Rachh, Gaurav Niraj
Neutron stars cooling passively since their birth may be reheated in their late-stage evolution by a number of possible phenomena; rotochemical, vortex creep, crust cracking, magnetic field decay, or more exotic processes such as removal of neutrons from their Fermi seas (the nucleon Auger effect), baryon number-violating nucleon decay, and accret…
Constraints on the fuzzy dark matter mass window from high-redshift observables
Kovetz, Ely D.; Lazare, Hovav; Flitter, Jordan
We use a combination of high-redshift observables to extract the strongest constraints to date on the fraction of axion fuzzy dark matter (FDM) in the mass window
Probing a scale dependent gravitational slip with galaxy strong lensing systems
Mörtsell, Edvard; Guerrini, Sacha
Observations of galaxy-scale strong gravitational lensing systems enable unique tests of departures from general relativity at the kilo- to megaparsec scale. In this work, the gravitational slip parameter γPN, measuring the amplitude of a hypothetical fifth force, is constrained using 130 elliptical galaxy lens systems. We implement a l…