"Allen Thomson" kirjoitti viestissä
om...
Earl Colby Pottinger wrote

One light year seems pretty ambitious, but has anybody
actually done a study of the signatures a large body would
generate moving through the interstellar medium at close
to the speed of light?

1987Natur.330..455Y

Abstract
A highly unusual radio source lying within 1 deg of the Galactic center has
been discovered whose 'cometary' morphology suggests that it is a wake
produced by a radio source moving supersonically with respect to the ambient
interstellar medium. Maps of the source are shown, and its characteristics
are discussed. Two possible models which might explain the wake are
suggested.

H Tavaila