Illustration of the M87 black hole and its accretion engine seen from a nearby planet. M87's central black hole was famously imaged in 2019 by a team of astronomers using the Event Horizon Telescope. It was the first ever directly captured image of a black hole's accretion disc. Although the accretion disc is exceedingly hot,it is nearly invisible in the optical part of the spectrum because most of its luminosity is in the X-ray region of the spectrum. The jets of charged particles,however,moving at a sizable fraction of the speed of light,are clearly visible. Also visible is the ring of stars around the edge of the accretion disc (red),which have been gravitationally lensed. | |
Licence : | Libre de droits |
Crédit: | Science Photo Library / Garlick, Mark |
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