Kavli Affiliate: Shigeki Matsumoto | Summary:We investigate majoron dark matter in a minimal setup, where the Standard Model is extended by three right-handed neutrinos and a complex scalar field. The theory is defined by an exact discrete gauge symmetry, $Z_Nsubset U(1)_B-L$, while the global $U(1)_B-L$ symmetry emerges only as an accidental symmetry at low energies. […]
Kavli Affiliate: Richard Kessler | Summary:Calibration uncertainties are the leading systematics in cosmological analyses using Type Ia supernovae (SNe Ia). For the textitNancy Grace Roman Space Telescope (Roman), we quantify the impact of chromatic effects on SNe Ia photometry and derived cosmological parameters, using simulated light curves from the High-Latitude Time Domain Survey. We investigate […]
Kavli Affiliate: Mark Vogelsberger | Summary:Cosmic dust is a key regulator of galaxy evolution, but its build-up and survival in the first billion years remain poorly constrained. We present a systematic analysis of dust in the thesan-zoom suite of radiation-hydrodynamical zoom-in simulations, which self-consistently model dust formation, growth, destruction, and its coupling to radiative transfer […]
Kavli Affiliate: Mark Vogelsberger | Summary:Early JWST/NIRCam surveys revealed a puzzling population of high-redshift massive galaxy candidates largely absent from previous rest-frame UV surveys. Spectroscopic follow-up has both confirmed and contested these candidates, whose potential overabundance may challenge traditional models of galaxy formation. In this study we evaluate the reliability of the photometric selections used […]
Kavli Affiliate: Susan Clark | Summary:The Quantum Scientific Computing Open User Testbed (QSCOUT) has developed a qubit-boson gate set for hybrid continuous-discrete variable (CV-DV) quantum computing. This document outlines how to utilize these gates on QSCOUT using Just Another Quantum Assembly Language, JaqaltextsuperscriptTM. | Search Query: arXiv Query: search_query=au:”Clark Susan”&id_list=&start=0&max_results=10Read More
Kavli Affiliate: Eiichiro Komatsu | Summary:The catalog from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) Public Data Release 1 (PDR1) contains half a million emission-line-selected [OII] galaxies spread across $540~mathrmdeg^2$ at $z le 0.48$ from HETDEX’s unprecedented untargeted spectroscopic survey. In this paper, we construct volume-limited samples from PDR1 in three luminosity bins across the […]
Kavli Affiliate: Kohei Inayoshi | Summary:We present a direct measurement of the Ly$α$ escape fraction, $f^rm Lyα_rm esc$, for H$α$ emitters (HAEs) at $zsimeq6.2$ in the JWST CEERS field by combining JWST/NIRCam F470N imaging with Subaru/HSC NB872 imaging. This unique pair of narrow-band filters enables the simultaneous measurement of Ly$α$ and H$α$ fluxes from galaxies […]
Kavli Affiliate: Alexander Ji | Summary:We present updated systemic properties of the ultra-faint dwarf galaxy Boötes III from the Southern Stellar Stream Spectroscopic Survey (S$^5$). We identify 21 high-probability members and measure a velocity dispersion of $σ_v = 1.69^+1.03_-0.85$ km s$^-1$, about six times smaller than the previously reported $10.7 pm 3.5$ km s$^-1$, and […]
Kavli Affiliate: Yingjie Peng | Summary:Cosmic voids provide a distinct low-density region for studying the environmental effects of galaxy properties. Using the SDSS DR7 catalog, we identify non-spherical voids via Voronoi tessellation and the watershed algorithm, and classify void galaxies based on their local volume. We compare and find that void galaxies classified by this […]
Kavli Affiliate: Eric Miller | Summary:We present the results of a deep 251 ks XRISM/Resolve observation of the cool core of the galaxy cluster Abell 2199. From the integrated spectrum of the central $3′ times 3’$ Resolve field of view ($104 times 104 mathrm~kpc^2$), we find that the intracluster medium (ICM) redshift is consistent with […]