4 citations · 4 across the 1 of their papers we have counts for
3 papers
nbi: the Astronomer's Package for Neural Posterior Estimation
Keming Zhang, Joshua S. Bloom, Stéfan van der Walt +1
Despite the promise of Neural Posterior Estimation (NPE) methods in astronomy, the adaptation of NPE into the routine inference workflow has been slow. We identify three critical i…
Stellar Spectra Fitting with Amortized Neural Posterior Estimation and nbi
Keming Zhang, Tharindu Jayasinghe, Joshua S. Bloom
Modern surveys often deliver hundreds of thousands of stellar spectra at once, which are fit to spectral models to derive stellar parameters/labels. Therefore, the technique of Amo…
The Progenitor Star of SN 2023ixf: A Massive Red Supergiant with Enhanced, Episodic Pre-Supernova Mass Loss
Yu-Jing Qin, Keming Zhang, Joshua Bloom +10
We identify the progenitor star of SN 2023ixf in the nearby galaxy Messier 101 using Keck/NIRC2 adaptive optics imaging and pre-explosion HST/ACS images. The supernova position, lo…