Kavli Affiliate: Claudio Ricci | Summary:A tight correlation between nuclear millimeter and X-ray emission has recently been found in nearby ($z < 0.01$) and low-Eddington ratio ($rm λ_Edd < 0.1$) radio-quiet Active Galactic Nuclei (AGN), suggesting a common origin in the hot X-ray corona. We test this relation in nine more distant RQ AGN ($z […]
Kavli Affiliate: Linhua Jiang | Summary:We present a multi-wavelength physical characterization of 14 luminous Ly$α$ emitters (LAEs) at $zapprox6$, integrating deep ground-based Magellan/M2FS spectroscopy with heterogeneous JWST/NIRCam broad- and medium-band imaging. Identified via strong Ly$α$ lines with extreme Ly$α$ luminosities of $>10^42.6$ erg s$^-1$, the sample exhibits very large rest-frame equivalent widths ($gtrsim100$ Å) and […]
Kavli Affiliate: Linhua Jiang | Summary:We present a multi-wavelength physical characterization of 14 luminous Ly$α$ emitters (LAEs) at $zapprox6$, integrating deep ground-based Magellan/M2FS spectroscopy with heterogeneous JWST/NIRCam broad- and medium-band imaging. Identified via strong Ly$α$ lines with extreme Ly$α$ luminosities of $>10^42.6$ erg s$^-1$, the sample exhibits very large rest-frame equivalent widths ($gtrsim100$ Å) and […]
Kavli Affiliate: Lijing Shao | Summary:With the detection of gravitational waves (GWs), multi-messenger astronomy has opened a new window for advancing our understanding of astrophysics, dense matter, gravitation, and cosmology. The GW sources detected to date are from mergers of compact object binaries, which possess the potential to generate detectable electromagnetic (EM) counterparts. Searching for […]
Kavli Affiliate: Lijing Shao | Summary:With the detection of gravitational waves (GWs), multi-messenger astronomy has opened a new window for advancing our understanding of astrophysics, dense matter, gravitation, and cosmology. The GW sources detected to date are from mergers of compact object binaries, which possess the potential to generate detectable electromagnetic (EM) counterparts. Searching for […]
Kavli Affiliate: Feng Long| Summary: Clustering high-dimensional data is especially challenging when cluster distributions are heavy tailed and only approximately elliptical. Existing high-dimensional methods are largely built for Gaussian or other light-tailed models, whereas classical robust elliptical procedures are mostly low dimensional or rely on fully parametric radial families. We propose a semiparametric elliptical mixture […]
Kavli Affiliate: Subo Dong | Summary:We present optical and near-infrared observations of the fast-declining Type Ia supernova (SN Ia) 2022an. The photometric and spectroscopic properties identify it as a standard 91bg-like event; however, our data reveal a relatively narrow absorption feature with a full width at half maximum (FWHM) of 75 angstroms near $1.037,μ$m in […]
Kavli Affiliate: Subo Dong | Summary:We present optical and near-infrared observations of the fast-declining Type Ia supernova (SN Ia) 2022an. The photometric and spectroscopic properties identify it as a standard 91bg-like event; however, our data reveal a relatively narrow absorption feature with a full width at half maximum (FWHM) of 75 angstroms near $1.037,μ$m in […]
Kavli Affiliate: Claudio Ricci | Summary:X-ray spectral modeling is a powerful tool for studying the immediate environment of accreting objects, including supermassive black holes. Several models, either phenomenological or physically driven, have been developed over the past decade to study X-ray spectra, delivering important insights into the properties of circumnuclear material of active galactic nuclei […]
Kavli Affiliate: Feng Long| Summary: Federated learning with heterogeneous clients remains a significant challenge for deep learning, primarily due to client drift arising from inconsistent local updates. Existing federated optimization methods typically address this issue through objective-level regularization or update-correction mechanisms. Recent studies, however, suggest that Transformer-based architectures may be inherently more robust than conventional […]