Kavli Affiliate: Lina Necib | First 5 Authors: Xiuyuan Zhang, Lina Necib, Denis Erkal, , | Summary: Low-mass dark matter (DM) subhalos are pivotal in understanding the small-scale structure of the universe, thereby offering a sensitive method to discriminate between different cosmological models. In this study, we estimate the local number density of cold DM […]
Kavli Affiliate: Sara Seager | First 5 Authors: Sara Seager, Luis Welbanks, Lucas Ellerbroek, William Bains, Janusz J. Petkowski | Summary: The search for signs of life in the Universe has entered a new phase with the advent of the James Webb Space Telescope (JWST). Detecting biosignature gases via exoplanet atmosphere transmission spectroscopy is in […]
Kavli Affiliate: Gabor Furesz | First 5 Authors: Danielle Frostig, Danielle Frostig, , , | Summary: We present near-infrared follow-up observations of the International Gravitational Wave Network (IGWN) event S250206dm with the Wide-Field Infrared Transient Explorer (WINTER). WINTER is a near-infrared time-domain survey designed for electromagnetic follow-up of gravitational-wave sources localized to $leq$300 deg$^2$. The […]
Kavli Affiliate: Saul A. Rappaport | First 5 Authors: Brian P. Powell, Guillermo Torres, Veselin B. Kostov, Tamás Borkovits, Saul A. Rappaport | Summary: We present the discovery of two quadruple star systems — TIC 285853156 and TIC 392229331 — each consisting of two bound eclipsing binary stars. Among the most compact quadruples known, TIC […]
Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: , , , , | Summary: We present the results obtained from timing and spectral studies of 15 thermonuclear X-ray bursts from 4U 1820-30 observed with the Neutron Star Interior Composition Explorer (NICER) during its five years of observations between 2017-2022. All bursts showed clear signs of […]
Kavli Affiliate: Salvatore Vitale | First 5 Authors: Matthew Mould, Noah E. Wolfe, Salvatore Vitale, , | Summary: The LIGO-Virgo-KAGRA catalog has been analyzed with an abundance of different population models due to theoretical uncertainty in the formation of gravitational-wave sources. To expedite model exploration, we introduce an efficient and accurate variational Bayesian approach that […]
Kavli Affiliate: Salvatore Vitale | First 5 Authors: Matthew Mould, Noah E. Wolfe, Salvatore Vitale, , | Summary: The LIGO-Virgo-KAGRA catalog has been analyzed with an abundance of different population models due to theoretical uncertainty in the formation of gravitational-wave sources. To expedite model exploration, we introduce an efficient and accurate variational Bayesian approach that […]
Kavli Affiliate: Salvatore Vitale | First 5 Authors: , , , , | Summary: The LIGO-Virgo-KAGRA catalog has been analyzed with an abundance of different population models due to theoretical uncertainty in the formation of gravitational-wave sources. To expedite model exploration, we introduce an efficient and accurate variational Bayesian approach that learns the population posterior […]
Kavli Affiliate: Erin Kara | First 5 Authors: Lorena Hernández-García, Joheen Chakraborty, Paula Sánchez-Sáez, Claudio Ricci, Jorge Cuadra | Summary: Quasi-periodic eruptions (QPEs) are rapid, recurring X-ray bursts from supermassive black holes, believed to result from interactions between accretion disks and surrounding matter. The galaxy SDSS1335+0728, previously stable for two decades, exhibited an increase in […]