“Gravars”

Abstract

THE gravitational radiation received by Weber¹ at a frequency ν= 1,660 Hz, over a bandwidth Δω≈0.1, had pulse durations < 0.4 s and an average pulse frequency f ≈ 10^−5.5 s⁻¹ (that is, about one in four days). The energy (in the pseudo-tensor approximation) in each pulse must have been ∼ 10⁴ ergs cm⁻² over the bandwidth. If a flat spectrum is assumed up to ω≈10⁴ s⁻¹ (cutoff somewhere beyond this value) the total energy per cm² in a pulse must be F Δt > 10⁹ erg cm⁻². The average energy density is then F Δt· f/c > 10⁻⁷ erg cm⁻³, and the corresponding mass density ρg > 10⁻²⁸ g cm⁻³.