3 papers
astro-ph.IM2026
The Korean Space Telescope (KST): A Dedicated Space Observatory for the Dark Universe
M. James Jee, Ho Seong Hwang, Dongwook Lim +14
The Korean Space Telescope (KST) is a next-generation 1.4-meter wide-field space observatory, a dedicated probe of the dark sector. Its single instrument provides diffraction-limit…
astro-ph.GA2026
TractorJAX: GPU-Accelerated SPHEREx Forced Photometry and the Trade-offs of Regularization and External Priors
Hyeonguk Bahk, Ho Seong Hwang
We present TractorJAX, an open-source GPU reimplementation of the catalog-forced mode of The Tractor. We use it to test whether regularization or external flux priors enable reliab…
astro-ph.GA2025
The Redshifts from 122 Bands: Comparative Redshift Forecast for Low-Resolution Spectra from SPHEREx and 7-Dimensional Sky Survey (7DS)
Jangho Bae, Bomee Lee, Myungshin Im +21
The recently initiated SPHEREx and 7DS surveys will deliver low-resolution spectra () for hundreds of millions of galaxies over the optical to near-infrared range…