Kavli Affiliate: J. S. Villasenor | First 5 Authors: J. Fernando Barbero G., J. Fernando Barbero G., , , | Summary: We analyze from a geometric perspective the Hamiltonian formulation of a recent modification of the Husain-Kuchavr model where, while preserving the connection as a dynamical variable, the other field is restricted to be the […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Teodora-Elena Bulichi, Teodora-Elena Bulichi, , , | Summary: High-redshift active galactic nuclei (AGN) have long been recognized as key probes of early black hole growth and galaxy evolution. However, modeling this population remains difficult due to the wide range of luminosities and black hole masses involved, and […]
Kavli Affiliate: Ke Wang | First 5 Authors: Ke Wang, Ke Wang, , , | Summary: This paper presents a comprehensive study on the asymptotically optimal repair of Reed-Solomon (RS) codes with small sub-packetization, specifically tailored for rack-aware distributed storage systems. Through the utilization of multi-base expansion, we introduce a novel approach that leverages monomials […]
Kavli Affiliate: Claudio Ricci | First 5 Authors: Benny Trakhtenbrot, Benny Trakhtenbrot, , , | Summary: We use the narrow [Ne v] $lambda$3427 emission line detected in the recently published JWST spectra of two galaxies, at z = 6.9 and 5.6, to study the key properties of the active galactic nuclei (AGN) and the supermassive […]
Kavli Affiliate: Claudio Ricci | First 5 Authors: , , , , | Summary: We present a detailed analysis of the most luminous and obscured Active Galactic Nuclei (AGNs) detected in the ultra-hard X-ray band (14-195 keV) by Swift/BAT. Our sample comprises 21 X-ray luminous (log $L_X/rm erg,s^-1>44.6$, 2-10 keV) AGNs at $z<0.6$, optically classified […]
Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Xiaojing Lin, Xiaojing Lin, , , | Summary: JWST observations have revealed a population of high-redshift "little red dots" (LRDs) that challenge conventional AGN models. We report the discovery of three local LRDs at $z = 0.1-0.2$, initially selected from the SDSS database, with follow-up optical/near-IR spectroscopy […]
Kavli Affiliate: Ke Wang | First 5 Authors: Xiao-Xiong Zeng, Xiao-Xiong Zeng, , , | Summary: In this paper, we investigate the power and efficiency of energy extraction through magnetic reconnection in the Kerr-Sen-AdS$_4$ black hole, with a primary focus on both the circular orbit and plunging region. We plot the allowed regions for energy […]
Kavli Affiliate: Ke Wang | First 5 Authors: Amirhossein Ansari, Amirhossein Ansari, , , | Summary: Recent advancements in Vision-Language Models like CLIP have enabled zero-shot OOD detection by leveraging both image and textual label information. Among these, negative label-based methods such as NegLabel and CSP have shown promising results by utilizing a lexicon of […]
Kavli Affiliate: Ke Wang | First 5 Authors: Amirhossein Ansari, Amirhossein Ansari, , , | Summary: Recent advancements in Vision-Language Models like CLIP have enabled zero-shot OOD detection by leveraging both image and textual label information. Among these, negative label-based methods such as NegLabel and CSP have shown promising results by utilizing a lexicon of […]
Kavli Affiliate: Eric Oberla | First 5 Authors: Jaime Álvarez-Muñiz, Jaime Álvarez-Muñiz, , , | Summary: The Giant Radio Array for Neutrino Detection (GRAND) is an envisioned observatory of ultra-high-energy particles of cosmic origin, with energies in excess of 100 PeV. GRAND uses large surface arrays of antennas to look for the radio emission from […]