![]() The discovery could give scientists a better understanding of the environments around supermassive black holes, particularly less-ravenous examples, such as the one at the heart of the Milky Way.Īdmin said:Regular high-energy pulses of gamma-ray radiation emerging from around the Milky Way's central black hole may be coming from a blob of matter whipping around at 30% the speed of light. They think this speeding lump of matter is emitting light across several wavelengths of radiation as it swirls around Sgr A*, flaring periodically as its orbit proceeds. This revelation of what the researchers call a "unique oscillatory physical mechanism" led them to conclude that both the gamma-rays and the X-rays are being emitted by a "blob" of gas that is swirling around Sgr A* at around 30% the speed of light - or around 200 million mph (320 million km/h). Universe's oldest X-ray-spitting quasar could reveal how the biggest black holes were born Supermassive black hole at the heart of the Milky Way is approaching the cosmic speed limit, dragging space-time along with it 1st black hole to be imaged is spewing 'lightsaber' energy jets larger than the Milky Way, and scientists think they know why "The coincidence of the multiwavelength periodicity in X-ray and gamma-ray points towards a single physical mechanism that produces it," the team wrote in the paper. This period of emission is half the time between pulses of X-ray radiation also seen coming from the vicinity of the Milky Way's supermassive black hole, suggesting the two emissions are in harmony and are likely related. They found that the pulses emerge from close to Sgr A* roughly once every 76.32 minutes. The duo searched the publicly available Fermi data for patterns of periodicity in the gamma-ray emissions. Using data from the Fermi Gamma-ray Space Telescope collected between June and December 2022, the researchers aimed to discover the origin of these gamma-rays. This can't account for the gamma-rays from Sgr A*, however, as the Milky Way's black hole is surrounded by very little matter and is feeding so slowly that it would be equivalent to a human living on a diet of one grain of rice every million years, according to University of Arizona astronomer Chris Impey, who was not involved in the research. As black holes feed on this matter, the accretion disk emits light that spans the electromagnetic spectrum, from low-energy radio waves to high-energy gamma-rays. Other supermassive black holes are known to emit powerful radiation from their immediate surroundings when their gravitational influence generates turbulent conditions in surrounding gas and dust, forming a structure called an accretion disk.
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