7 papers
An emulator for the ionizing photon mean free path in ultra-high resolution simulations: the implications of mean free path measurements for the reionization history
Hurum Maksora Tohfa, Christopher Cain, Matthew McQuinn +1
Measurements of the mean free path of ionizing photons from high-redshift quasar spectra at - constrain the reionization history, but interpreting them requires modeli…
A First Measurement of Circumgalactic Dust Reddening from Only 4.6 deg of the Rubin Observatory's DP1
John Franklin Crenshaw, Matthew McQuinn, Jessica K. Werk
We present the first measurement of circumgalactic dust reddening from the Vera C. Rubin Observatory, using only 4.6 deg of ComCam Data Preview 1 - roughly of the fina…
Kiloparsec-scale turbulence driven by reionization may grow intergalactic magnetic fields
Christopher Cain, Matthew McQuinn, Evan Scannapieco +2
The intergalactic medium (IGM) underwent intense heating that resulted in pressure disequilibrium in the wake of ionization fronts during cosmic reionization. The dynamical relaxat…
NIAC project report: Solar system-scale VLBI to dramatically improve cosmological distance measurements
Matthew McQuinn, Miguel Morales, Casey McGrath +7
We investigate the feasibility and scientific potential of the Cosmic Positioning System (CPS), a space mission concept enabling purely geometric distance measurements to sources a…
Outer Solar System spacecraft to probe the Hz gravitational wave frontier
Matthew McQuinn, Casey McGrath
The microhertz frequency band of gravitational waves probes the merger of supermassive black holes as well as many other gravitational wave phenomena. However, space-interferometry…
CGM cloud sizes from refractive FRB scattering
Lluis Mas-Ribas, Matthew McQuinn, J. Xavier Prochaska
We explore constraints on the size of cool gas clouds in the circumgalactic medium (CGM) obtainable from the presence, or lack thereof, of refractive scattering in fast radio burst…