Limb brightening | Article about limb brightening by The Free Dictionary
limb brightening The increase in intensity at X-ray and radio wavelengths from the center to the limb of the Sun's disk. It arises at radio wavelengths for the same reason as the limb darkening at visible wavelengths but has the opposite effect, because the radiation is emitted from the high-temperature upper chromosphere/inner corona rather than from the photosphere. At X-ray wavelengths, where the material is less opaque, intensity is determined by path length rather than radiation temperature.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
limb brightening[′lim ‚brīt·ən·iŋ]
An observed increase in the intensity of radio, extreme ultraviolet, or x-radiation from the sun or another star from its center to its limb.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive
Therefore one would expect limb brightening
even in the absence of temperature increase, simply due to the secant increase of path length.
Given the dusty and misty conditions early in the present apparition, I suspect that the east and west limbs of Mars will display limb brightening
(also called limb arcs) caused by scattered light from dust and dry ice particles high in the Martian atmosphere.
("limb arcs") is caused by scattered light from dust and dry-ice particles high in the Martian atmosphere.
- lily of the valley
- lily-pad ice
- LIM EMS
- Lim Festival
- Lim Fjord
- Lima Barreto, Afonso Henriques de
- lima bean
- Lima Bean Pod Borer
- Lima, Jorge de
- Liman von Sanders, Otto
- Liman, Arthur L.
- Limann, Hilla
- Limanowski, Boleslaw
- Limassol Wine Festival
- limb brightening
- limb bud
- limb darkening
- Limbaugh, Rush
- limber board
- limber hole
- Limberg, Aleksandr
- Limberg, Aleksandr Aleksandrovich
- Limberg, Aleksandr Karlovich
- Limbic System
- limb-kinetic apraxia
- Limbourg brothers
- Limburg, Pol, Herman, and Jehanequin de
- lime burning