Kavli Affiliate: Herman Marshall | Summary:We report on the observation of the Compton-thin Seyfert galaxy NGC~5506 performed with the Imaging X-ray Polarimetry Explorer (IXPE). The observation, with a net observing time of 975~ks, was partly simultaneous with textitNuSTAR (52~ks) and textitXMM-Newton (37~ks). Using a simple baseline model with IXPE data only, we find an upper […]
Kavli Affiliate: Philip Marshall | Summary:The start of the Legacy Survey of Space and Time marks a new era for strong lensing science, where the number of strong lenses identified is expected to increase to $mathcalO(10^5)$. In this paper we use a neural network to determine the precision with which lens parameters can be determined, […]
Kavli Affiliate: Feng Long| Summary: Modern text and image representations are often matrix-valued, with rows corresponding to tokens, patches, or other local feature vectors. Predictive information is often sparse but sample-specific, making classical sparse regression methods with a common support poorly suited to this heterogeneity. This paper formalizes an individualized sparse regression framework for matrix-valued […]
Kavli Affiliate: Kiyoshi Masui | Summary:The Canadian Hydrogen Intensity Mapping Experiment/Fast Radio Burst (CHIME/FRB) instrument is a transient astrophysical burst survey that is discovering FRBs, pulsars, and long-period transients. As a transit telescope, the survey is most sensitive within 2 degrees of the meridian; however, CHIME/FRB can detect bright astrophysical bursts out to its horizon, […]
Kavli Affiliate: Robert Cameron | Summary:The Sunrise Chromospheric Infrared spectroPolarimeter (SCIP) instrument onboard the balloon-borne Sunrise III observatory provided new high-resolution observations of the solar chromosphere in the Ca II 854.2 nm line. The Stokes-V signal in magnetic network regions was found to show fine-structured details, which suggests the magnetic field above the network elements […]
Kavli Affiliate: Hsiaowen Chen |Summary:The three-dimensional geometric structure of the cool (T~$10^4$ K) circumgalactic medium (CGM) — the line-of-sight depth and the number of discrete clumps — is poorly constrained. Existing inferences come predominantly from quasar absorption-line statistics, but these pencil-beam probes provide limited spatial and kinematic information. Here we show that spatially resolved emission-line […]
Kavli Affiliate: Kohei Inayoshi | Summary:Recent studies have hypothesized that little red dots (LRDs) are rapidly accreting black holes surrounded by dense gaseous environments. Both neutral and ionized gas play a key role in explaining many of the puzzling spectral features of LRDs, including the emission line profiles in the optical-infrared bands, although the physical […]
Kavli Affiliate: Lina Necib | Summary:The fourth "Mineral Detection of Neutrinos and Dark Matter" (MDvDM’26) meeting was held April 14-17, 2026 in Karlsruhe, Germany, hosted by the Institute for Astroparticle Physics (IAP) at Karlsruhe Institute of Technology (KIT). These proceedings detail the contributions that were presented during MDvDM’26, illustrating the unprecedented progress in theoretical, computational […]
Kavli Affiliate: Marcela Carena | Summary:We review recent advances in particle physics enabled and motivated by the rapid progress of quantum technologies. The continued development of quantum computing toward large-scale, fault-tolerant systems has the potential to address dynamical problems that remain extremely challenging for classical computational approaches, opening new avenues for studying nonperturbative dynamical processes. […]
Kavli Affiliate: Lijing Shao | Summary:We study spontaneous scalarization near and at extremality in Einstein-Maxwell-scalar theory. As Reissner-Nordström (RN) extremality is approached from below, the nonextremal scalarization existence curves collapse toward a common critical threshold $α_c=1/4$ given by the Breitenlohner-Freedman bound for the near-horizon throat (AdS$_2times S^2$) of its extremal black hole. For a polynomial […]