North Polar Spur

North Polar Spur

[′nȯrth ′pō·lər ′spər]
(astronomy)
A region of radio and soft x-ray emission, having a continuous spectral distribution, that extends from the galactic plane to the north galactic pole; believed to be the remnant of an old supernova.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.