175 citations · 2.7k across the 72 of their papers we have counts for
69 papers
Two-population model of type Ia supernovae and their associations with host galaxies in ZTF DR2
Radosław Wojtak, Lucas Hallgren, Jens Hjorth
We constrain type Ia supernova intrinsic properties, extinction, and probabilistic supernova-host associations using the volume-limited sample from the Zwicky Transient Factory DR2…
Stretch to stretch, dust to dust: lower-value local measurement from two-population modelling of type Ia supernovae
Radosław Wojtak, Jens Hjorth
We revisit the local Hubble constant measurement from type Ia supernovae calibrated with Cepheids (SH0ES) by remodelling the supernova data using two supernova populations emerging…
Diverse reddening distributions in sight lines to type Ia supernovae
Lucas Hallgren, Radoslaw Wojtak, Jens Hjorth +1
Precise cosmological constraints from type Ia supernovae require adequately accurate corrections for host-galaxy extinction. Modelling these corrections is challenged by the proble…
Inferring the Hubble Constant Using Simulated Strongly Lensed Supernovae and Neural Network Ensembles
Gonçalo Gonçalves, Nikki Arendse, Doogesh Kodi Ramanah +1
Strongly lensed supernovae are a promising new probe to obtain independent measurements of the Hubble constant (). In this work, we employ simulated gravitationally lensed T…
Dark Energy Constraints and Joint Cosmological Inference from Mutually Inconsistent Observations
Charles L. Steinhardt, Preston Phillips, Radoslaw Wojtak
Recent results regarding dark energy are mutually inconsistent under the CDM cosmological model, hinting at the possibility of undiscovered physics. However, the currently accep…
The Hubble Constant from Blue Type Ia Supernovae
Christa Gall, Luca Izzo, Radoslaw Wojtak +1
There is a persistent tension of about between the value of the Hubble constant, as derived from the local distance ladder vs. the cosmic microwave background, signaling ei…