David R. Skillman

A Video Downlink from Proxima Centauri b

This note examines the data rates that could be achieved between Earth and a technological civilization on the planet Proxima Centauri b if both civilizations constructed dedicated radio terminals using technologies available today. A reference X-band system using approximately 3...

Gravity Enhancement in a Relativistic Collision

This article describes the special case of gravitational enhancement during the head-on approach of two equal masses on a collision course. Within the first post-Minkowskian approximation, the result is valid for arbitrary velocities and shows that, in the ultrarelativistic limit...

Gravity Enhancement in a Relativistic Collision

This article describes the special case of gravitational enhancement during the head-on approach of two equal masses on a collision course. Within the first post-Minkowskian approximation, the result is valid for arbitrary velocities and shows that, in the ultrarelativistic limit...