Candidate Periodically Variable Quasars from the Dark Energy Survey and the Sloan Digital Sky Survey

Kavli Affiliate: Joshua Frieman | First 5 Authors: Yu-Ching Chen, Xin Liu, Wei-Ting Liao, A. Miguel Holgado, Hengxiao Guo | Summary: Periodically variable quasars have been suggested as close binary supermassive black holes. We present a systematic search for periodic light curves in 625 spectroscopically confirmed quasars with a median redshift of 1.8 in a […]


Continue.. Candidate Periodically Variable Quasars from the Dark Energy Survey and the Sloan Digital Sky Survey

Discovery of a Candidate Binary Supermassive Black Hole in a Periodic Quasar from Circumbinary Accretion Variability

Kavli Affiliate: R. G. McMahon | First 5 Authors: Wei-Ting Liao, Yu-Ching Chen, Xin Liu, A. Miguel Holgado, Hengxiao Guo | Summary: Binary supermassive black holes (BSBHs) are expected to be a generic byproduct from hierarchical galaxy formation. The final coalescence of BSBHs is thought to be the loudest gravitational wave (GW) siren, yet no […]


Continue.. Discovery of a Candidate Binary Supermassive Black Hole in a Periodic Quasar from Circumbinary Accretion Variability

Discovery of a Candidate Binary Supermassive Black Hole in a Periodic Quasar from Circumbinary Accretion Variability

Kavli Affiliate: Richard Kessler | First 5 Authors: Wei-Ting Liao, Yu-Ching Chen, Xin Liu, A. Miguel Holgado, Hengxiao Guo | Summary: Binary supermassive black holes (BSBHs) are expected to be a generic byproduct from hierarchical galaxy formation. The final coalescence of BSBHs is thought to be the loudest gravitational wave (GW) siren, yet no confirmed […]


Continue.. Discovery of a Candidate Binary Supermassive Black Hole in a Periodic Quasar from Circumbinary Accretion Variability

Vibronic response of a spin-1/2 state from a carbon impurity in two-dimensional WS$_2$

Kavli Affiliate: Jeffrey B. Neaton | First 5 Authors: Katherine A. Cochrane, Jun-Ho Lee, Christoph Kastl, Jonah B. Haber, Tianyi Zhang | Summary: We demonstrate the creation of a spin-1/2 state via the atomically controlled generation of magnetic carbon radical ions (CRIs) in synthetic two-dimensional transition metal dichalcogenides (TMDs). Hydrogenated carbon impurities located at chalcogen […]


Continue.. Vibronic response of a spin-1/2 state from a carbon impurity in two-dimensional WS$_2$

CMB-S4: Forecasting Constraints on Primordial Gravitational Waves

Kavli Affiliate: Hsiao-Mei (Sherry) Cho | First 5 Authors: CMB-S4 Collaboration, :, Kevork Abazajian, Graeme E. Addison, Peter Adshead | Summary: CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to significantly advance the sensitivity of CMB measurements and enhance our understanding of the origin and evolution of the Universe, from the highest energies at […]


Continue.. CMB-S4: Forecasting Constraints on Primordial Gravitational Waves

CMB-S4: Forecasting Constraints on Primordial Gravitational Waves

Kavli Affiliate: Hsiao-Mei (Sherry) Cho | First 5 Authors: CMB-S4 Collaboration, :, Kevork Abazajian, Graeme E. Addison, Peter Adshead | Summary: CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to significantly advance the sensitivity of CMB measurements and enhance our understanding of the origin and evolution of the Universe, from the highest energies at […]


Continue.. CMB-S4: Forecasting Constraints on Primordial Gravitational Waves

CMB-S4: Forecasting Constraints on Primordial Gravitational Waves

Kavli Affiliate: Hsiao-Mei (Sherry) Cho | First 5 Authors: CMB-S4 Collaboration, :, Kevork Abazajian, Graeme E. Addison, Peter Adshead | Summary: CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to significantly advance the sensitivity of CMB measurements and enhance our understanding of the origin and evolution of the Universe, from the highest energies at […]


Continue.. CMB-S4: Forecasting Constraints on Primordial Gravitational Waves

CMB-S4: Forecasting Constraints on Primordial Gravitational Waves

Kavli Affiliate: Daniel Akerib | First 5 Authors: CMB-S4 Collaboration, :, Kevork Abazajian, Graeme E. Addison, Peter Adshead | Summary: CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to significantly advance the sensitivity of CMB measurements and enhance our understanding of the origin and evolution of the Universe, from the highest energies at the […]


Continue.. CMB-S4: Forecasting Constraints on Primordial Gravitational Waves

CMB-S4: Forecasting Constraints on Primordial Gravitational Waves

Kavli Affiliate: Adam Mantz | First 5 Authors: CMB-S4 Collaboration, :, Kevork Abazajian, Graeme E. Addison, Peter Adshead | Summary: CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to significantly advance the sensitivity of CMB measurements and enhance our understanding of the origin and evolution of the Universe, from the highest energies at the […]


Continue.. CMB-S4: Forecasting Constraints on Primordial Gravitational Waves