What Sets the Metallicity of Ultra-Faint Dwarfs?

Kavli Affiliate: Andrey Kravtsov | First 5 Authors: Vance Wheeler, Vance Wheeler, , , | Summary: We use intergalactic medium (IGM) metallicity distributions from several state-of-the-art cosmological simulations of Milky Way analogs and a semi-analytic model of ultra-faint dwarf galaxy (UFD) formation to model the stellar metallicities of UFDs in MW-like environments. We study simulations […]


Continue.. What Sets the Metallicity of Ultra-Faint Dwarfs?

Ptbp1 is not required for retinal neurogenesis and cell fate specification.

Kavli Affiliate: Seth Blackshaw | Authors: Haley Appel, Rogger Carmen-Orozco, Clayton Santiago, Thanh Hoang and Seth Blackshaw | Summary: The RNA-binding protein Ptbp1 has been proposed as a master regulator of neuronal fate, repressing neurogenesis through its effects on alternative splicing and miRNA maturation. While prior studies using RNA interference suggested that Ptbp1 loss promotes […]


Continue.. Ptbp1 is not required for retinal neurogenesis and cell fate specification.

Connectome analysis of a cerebellum-like circuit for sensory prediction

Kavli Affiliate: Nathaniel Sawtell | Authors: Krista E Perks, Mariela D Petkova, Salomon Z Muller, Michael Genecin, Adishree Ghatare, Richard Schalek, Yuelong Wu, Michal Januszewski, Viren Jain, Jeff W Lichtman, LF Abbott and Nathaniel B Sawtell | Summary: Transitive inference (TI) is a cognitive process in which decisions are guided by internal representations of abstract […]


Continue.. Connectome analysis of a cerebellum-like circuit for sensory prediction

Bayesian frequency estimation at the fundamental quantum limit

Kavli Affiliate: Lee McCuller | First 5 Authors: James W. Gardner, James W. Gardner, , , | Summary: Searching for a weak signal at an unknown frequency is a canonical task in experiments probing fundamental physics such as gravitational-wave observatories and ultra-light dark matter haloscopes. These state-of-the-art sensors are limited by quantum noise arising from […]


Continue.. Bayesian frequency estimation at the fundamental quantum limit

Spin-charge bound states and emerging fermions in a quantum spin liquid

Kavli Affiliate: Leon Balents | First 5 Authors: Jens H. Nyhegn, Jens H. Nyhegn, , , | Summary: The complex interplay between charge and spin dynamics lies at the heart of strongly correlated quantum materials, and it is a fundamental topic in basic research with far reaching technological perspectives. We explore in this paper the […]


Continue.. Spin-charge bound states and emerging fermions in a quantum spin liquid

Multi-year Polarimetric Monitoring of Four CHIME-Discovered Repeating Fast Radio Bursts with FAST

Kavli Affiliate: Kejia Lee | First 5 Authors: , , , , | Summary: In this study, we report multi-year polarization measurements of four repeating FRBs initially discovered by CHIME: FRBs~20190117A, 20190208A, 20190303A, and 20190417A. We observed the four repeating FRBs with FAST, detecting a total of 66 bursts. Two bursts from FRB~20190417A exhibit a […]


Continue.. Multi-year Polarimetric Monitoring of Four CHIME-Discovered Repeating Fast Radio Bursts with FAST