27 citations · 55 across the 7 of their papers we have counts for
7 papers
Modeling Galaxy Surveys with Hybrid SBI
Gemma Zhang, Chirag Modi, Oliver H. E. Philcox
Simulation-based inference (SBI) has emerged as a powerful tool for extracting cosmological information from galaxy surveys deep into the non-linear regime. Despite its great promi…
Maven: A Multimodal Foundation Model for Supernova Science
Gemma Zhang, Thomas Helfer, Alexander T. Gagliano +2
A common setting in astronomy is the availability of a small number of high-quality observations, and larger amounts of either lower-quality observations or synthetic data from sim…
Subhalo effective density slope measurements from HST strong lensing data with neural likelihood-ratio estimation
Gemma Zhang, Atınç Çağan Şengül, Cora Dvorkin
Examining the properties of subhalos with strong gravitational lensing images can shed light on the nature of dark matter. From upcoming large-scale surveys, we expect to discover…
Inferring subhalo effective density slopes from strong lensing observations with neural likelihood-ratio estimation
Gemma Zhang, Siddharth Mishra-Sharma, Cora Dvorkin
Strong gravitational lensing has emerged as a promising approach for probing dark matter models on sub-galactic scales. Recent work has proposed the subhalo effective density slope…
Impact of Warm Dark Matter on the Cosmic Neutrino Background Anisotropies
Christopher G. Tully, Gemma Zhang
The Cosmic Neutrino Background (CB) anisotropies for massive neutrinos are a unique probe of large-scale structure formation. The redshift-distance measure is completely differe…
Multi-Messenger Astrophysics with the Cosmic Neutrino Background
Christopher G. Tully, Gemma Zhang
The massive neutrinos of the Cosmic Neutrino Background (CB) are fundamental ingredients of the radiation-dominated early universe and are important non-relativistic probes of t…
The void halo mass function: a promising probe of neutrino mass
Gemma Zhang, Zack Li, Jia Liu +4
Cosmic voids, the underdense regions in the universe, are particularly sensitive to diffuse density components such as cosmic neutrinos. This sensitivity is enhanced by the match b…