X-RAY ASTRONOMY Definition & Meaning

x-ray astronomy

noun

the branch of astronomy that studies celestial objects by means of the x-rays emitted by them.

X-ray astronomy

noun

the branch of astronomy concerned with the detection and measurement of X-rays emitted by certain celestial bodies. As X-rays are absorbed by the atmosphere, satellites and rockets are used

x-ray astronomy

The study of celestial objects by measurement of the x-rays they emit. Because the Earth's atmosphere absorbs x-rays, x-ray detectors are usually carried into space on satellites. X-rays are emitted by high-energy objects such as active galactic nuclei, supernova remnants, x-ray binary stars, neutron stars, and the regions around black holes. Objects which do not produce their own x-rays can reflect radiation from nearby stars, making it possible to study the objects using x-ray astronomy; one notable example of this is the analysis of solar x-rays reflected by the Moon.

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x-ray astronomer noun

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�y��vlog History and Origins

Origin of x-ray astronomy¹

First recorded in 1960–65

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Example Sentences

Isaacman wrote that reducing Chandra’s funding would amount to “ceding U.S. industrial leadership” and “a death spiral for X-ray astronomy in the United States.”

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The mission builds on the work done by the Chandra X-ray Observatory, NASA’s flagship X-ray astronomy mission, which launched in 1999 and has imaged the remnants of exploded stars, discovered black holes, and more.

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The fourth concept, the Lynx X-ray Observatory, would be the most powerful x-ray astronomy facility ever built, offering intimate views of black holes, active galaxies and violent supernovae across cosmic time.

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The eROSITA team says this first image identifies twice as many x-ray sources as have previously been detected in 60 years of x-ray astronomy, and stretches four times farther out than the previous x-ray survey 3 decades ago.

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"The data is truly stunning and I think what we're doing here will revolutionise X-ray astronomy," he told BBC News.

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