Tuning acoustic impedance in load-bearing structures

Kavli Affiliate: Chiara Daraio | First 5 Authors: Sai Sharan Injeti, Paolo Celli, Kaushik Bhattacharya, Chiara Daraio, | Summary: Acoustic transparency is the capability of a medium to transmit mechanical waves to adjacent media, without scattering. This characteristic can be achieved by carefully engineering the acoustic impedance of the medium — a combination of wave […]


Continue.. Tuning acoustic impedance in load-bearing structures

GRUMPY: a simple framework for realistic forward-modelling of dwarf galaxies

Kavli Affiliate: Andrey Kravtsov | First 5 Authors: Andrey Kravtsov, Viraj Manwadkar, , , | Summary: We present a simple regulator-type framework designed specifically for modelling formation of dwarf galaxies. We explore sensitivity of model predictions for the stellar mass–halo mass and stellar mass–metallicity relations to different modelling choices and parameter values. Despite its simplicity, […]


Continue.. GRUMPY: a simple framework for realistic forward-modelling of dwarf galaxies

SENSEI: Characterization of Single-Electron Events Using a Skipper-CCD

Kavli Affiliate: Michael Crisler | First 5 Authors: Liron Barak, Itay M. Bloch, Ana Botti, Mariano Cababie, Gustavo Cancelo | Summary: We use a science-grade Skipper Charge Coupled Device (Skipper-CCD) operating in a low-radiation background environment to develop a semi-empirical model that characterizes the origin of single-electron events in CCDs. We identify, separate, and quantify […]


Continue.. SENSEI: Characterization of Single-Electron Events Using a Skipper-CCD

SENSEI: Characterization of Single-Electron Events Using a Skipper-CCD

Kavli Affiliate: Michael Crisler | First 5 Authors: Liron Barak, Itay M. Bloch, Ana Botti, Mariano Cababie, Gustavo Cancelo | Summary: We use a science-grade Skipper Charge Coupled Device (Skipper-CCD) operating in a low-radiation background environment to develop a semi-empirical model that characterizes the origin of single-electron events in CCDs. We identify, separate, and quantify […]


Continue.. SENSEI: Characterization of Single-Electron Events Using a Skipper-CCD

Linking the Singularities of Cosmological Correlators

Kavli Affiliate: Austin Joyce | First 5 Authors: Daniel Baumann, Wei-Ming Chen, Carlos Duaso Pueyo, Austin Joyce, Hayden Lee | Summary: Much of the structure of cosmological correlators is controlled by their singularities, which in turn are fixed in terms of flat-space scattering amplitudes. An important challenge is to interpolate between the singular limits to […]


Continue.. Linking the Singularities of Cosmological Correlators

An application of a Si/CdTe Compton camera for the polarization measurement of hard x-rays from highly charged heavy ions

Kavli Affiliate: Tadayuki Takahashi | First 5 Authors: Yutaka Tsuzuki, Shin Watanabe, Shimpei Oishi, Nobuyuki Nakamura, Naoki Numadate | Summary: The methods to measure the polarization of the x-rays from highly charged heavy ions with a significantly higher accuracy than the existing technology is needed to explore relativistic and quantum electrodynamics (QED) effects including the […]


Continue.. An application of a Si/CdTe Compton camera for the polarization measurement of hard x-rays from highly charged heavy ions

Renormalization and non-renormalization of scalar EFTs at higher orders

Kavli Affiliate: Tom Melia | First 5 Authors: Weiguang Cao, Franz Herzog, Tom Melia, Jasper Roosmale Nepveu, | Summary: We renormalize massless scalar effective field theories (EFTs) to higher loop orders and higher orders in the EFT expansion. To facilitate EFT calculations with the R* renormalization method, we construct suitable operator bases using Hilbert series […]


Continue.. Renormalization and non-renormalization of scalar EFTs at higher orders

Optical Spectroscopy of Dual Quasar Candidates from the Subaru HSC-SSP program

Kavli Affiliate: John D. Silverman | First 5 Authors: Shenli Tang, John D. Silverman, Xuheng Ding, Junyao Li, Khee-Gan Lee | Summary: We report on a spectroscopic program to search for dual quasars using Subaru Hyper Suprime-Cam (HSC) images of SDSS quasars which represent an important stage during galaxy mergers. Using Subaru/FOCAS and Gemini-N/GMOS, we […]


Continue.. Optical Spectroscopy of Dual Quasar Candidates from the Subaru HSC-SSP program

Constraints on black-hole charges with the 2017 EHT observations of M87*

Kavli Affiliate: Thomas M. Crawford | First 5 Authors: Prashant Kocherlakota, Luciano Rezzolla, Heino Falcke, Christian M. Fromm, Michael Kramer | Summary: Our understanding of strong gravity near supermassive compact objects has recently improved thanks to the measurements made by the Event Horizon Telescope (EHT). We use here the M87* shadow size to infer constraints […]


Continue.. Constraints on black-hole charges with the 2017 EHT observations of M87*

Joint Optimization of Hadamard Sensing and Reconstruction in Compressed Sensing Fluorescence Microscopy

Kavli Affiliate: Chris Xu | First 5 Authors: Alan Q. Wang, Aaron K. LaViolette, Leo Moon, Chris Xu, Mert R. Sabuncu | Summary: Compressed sensing fluorescence microscopy (CS-FM) proposes a scheme whereby less measurements are collected during sensing and reconstruction is performed to recover the image. Much work has gone into optimizing the sensing and […]


Continue.. Joint Optimization of Hadamard Sensing and Reconstruction in Compressed Sensing Fluorescence Microscopy