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Nov 17, 2014 · By looking at the sky with X-ray and gamma-ray instruments, we collect important information in our attempt to address questions such as how the universe began and how it evolves, and gain some insight into its eventual fate.
X-rays are a form of light, but much more energetic than the light detected by our eyes. The energy of an X-ray photon (light particle) is ~1000 times that of a photon of visible light. They are part of the electromagnetic spectrum which includes visible light, radio waves, microwaves and infra red radiation. The picture below should make this ...
Above several hundred eV, the universe becomes transparent to high-energy radiation, which gives us a clear view of the hot regions of our universe. As with optical observations, x-ray observations provide us with the images, spectra, and time-dependent luminosities of astronomical objects.
Jan 26, 2018 · X-rays are given off by objects and processes that are extremely hot and energetic, such as superheated jets of material near black holes and the explosion of a giant star called a supernova. Closer to home, our own Sun emits x-rays, as do comets as they encounter the solar wind.
- Carolyn Collins Petersen
X-ray astronomy, Study of astronomical objects and phenomena that emit radiation at X-ray wavelengths. Because Earth’s atmosphere absorbs most X-rays, X-ray telescopes and detectors are taken to high altitudes or into space by balloons and spacecraft. In 1949 detectors aboard sounding rockets.
- The Editors of Encyclopaedia Britannica
X-ray astronomy is an observational branch of astronomy which deals with the study of X-ray observation and detection from astronomical objects. X-radiation is absorbed by the Earth's atmosphere, so instruments to detect X-rays must be taken to high altitude by balloons, sounding rockets, and satellites.
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The following pages are designed to give an overview of what X-ray Astronomy is and what research is being carried out at the moment, both here and in other departments around the world. What is X-ray Astronomy and how do we do it. What we get from X-rays; The History of X-ray Astronomy; X-ray Satellites. XMM-NEWTON; CHANDRA; New Missions. X ...
