X-ray astronomy
X-ray astronomy X"-ray` astronomy the branch of astronomy dealing with the study of astronomical objects which emit X-rays, and the methods used to detect such objects. [PJC]

The Collaborative International Dictionary of English. 2000.

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  • X-ray astronomy — X rays start at 0.008 nm and extend across the electromagnetic spectrum to 8 nm, over which the Earth s atmosphere is opaque. X ray astronomy is an observational branch of astronomy which deals with the study of X ray observation and detection… …   Wikipedia

  • X-ray astronomy — n. the branch of astronomy that deals with X ray radiation from various celestial sources, esp. binary stars …   English World dictionary

  • x-ray astronomy — x ray astronomer. the branch of astronomy that studies celestial objects by means of the x rays emitted by them. Cf. x ray (def. 1b). [1960 65] * * * Study of astronomical objects and phenomena that emit radiation at X ray wavelengths. Because… …   Universalium

  • x-ray astronomy — noun Usage: usually capitalized X : astronomy dealing with investigations of celestial bodies by means of the X rays they emit • x ray astronomer noun, usually capitalized X …   Useful english dictionary

  • X-ray astronomy — noun An observational branch of astronomy, which deals with the study of X ray emission from celestial objects …   Wiktionary

  • X-ray astronomy — noun Date: 1963 astronomy dealing with investigations of celestial bodies by means of the X rays they emit …   New Collegiate Dictionary

  • X-ray astronomy — noun the branch of astronomy concerned with the detection and measurement of high energy electromagnetic radiation emitted by celestial objects …   English new terms dictionary

  • X-ray source — ▪ astronomy       in astronomy, any of a class of cosmic objects that emit radiation at X ray wavelength. Because the Earth s atmosphere absorbs X rays (X ray) very efficiently, X ray telescopes and detectors must be carried high above it by… …   Universalium

  • X-ray pulsar — X ray pulsars or accretion powered pulsars are a class of astronomical objects that are X ray sources displaying strict periodic variations in X ray intensity. The X ray periods range from as little as a fraction of a second to as much as several …   Wikipedia

  • X-ray source — X ray sources abound around us.* an astronomical X ray source, see X ray astronomy ** X ray background * an X ray tube, artificial X ray source * synchrotrons, which produce X rays as synchrotron radiation * cyclotrons, which produce X rays as… …   Wikipedia

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