An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

A piece of equipment mounted on the front of a vehicle for clearing away snow from roads, railroad tracks, etc.

→ snow + plow, → Plough.

Barfrub, from barf, → snow, + rub, rubidan "to sweep," → scan.

The third phase in the evolution of a → supernova remnant (SNR) occurring after the → Sedov-Taylor phase when the mass of the swept-up material becomes much larger than the amount of the ejected material. The SNR is surrounded by a cool → shell of accumulated material that is being pushed from behind, similar to what occurs for a snowplow. During this phase, → radiative cooling becomes important and the total energy is no longer conserved. Also called the → radiative phase.

→ snowplow; → phase.