X-rays are a form of electromagnetic radiation with wavelengths shorter than ultraviolet light but longer than gamma rays. X-rays are produced when high-speed electrons collide with a metal target. X-rays can penetrate through tissues and are commonly used in medical imaging.
In astronomy, X-rays are used to study high-energy processes such as black holes, supernovae, and accretion disks. Many X-ray sources in space are associated with compact objects such as neutron stars and black holes in binary systems.
Orbits around X-ray sources can provide important information about the properties of these objects. The periodic variations in X-ray intensity can be used to determine the orbital period and distance between the objects in the binary system. The shape of the X-ray light curve can also give clues about the geometry and nature of the accretion disk.
Overall, X-ray astronomy has provided important insights into the high-energy universe, including the physics of compact objects, the dynamics of gas in accretion disks, and the processes that drive the most energetic phenomena in the Universe.
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