![]() The stereo reconstruction of the M87 galaxy and the more precise figure for the mass of the central black hole could help astrophysicists learn about a characteristic of the black hole they’ve had no way to determine before for any black hole: its spin. ![]() (Animation by NASA, ESA, Joseph Olmsted/STScI 3D model by Frank Summers/STScI Science by Chung-Pei Ma/UC Berkeley) But meticulous measurements by UC Berkeley astronomers revealed the motion of stars within the elliptical galaxy, showing that it is shaped more like a potato, what astronomers call a triaxial galaxy. To observers, M87 looks like a symmetrical blob of stars. Interestingly, it is not rotating around any of the galaxy’s major axes, but instead about an axis that is 40 degrees away from the long axis of its 2D image as observed by the Hubble Space Telescope. They also were able to measure the rotation of the galaxy, which is a relatively sedate 25 kilometers per second. By comparison, our own Milky Way has at its center a massive black hole only 4 million times the mass of the sun. Knowing this, University of California, Berkeley, astronomers were able to determine the mass of the supermassive black hole at the galaxy’s core to a high precision, estimating it at 5.37 billion times the mass of the sun. The galaxy’s shortest axis is about three-fourths (72.2%) the length of its long axis, while the intermediate axis is about seven-eighths (84.5%) that of the long axis. In fact, M87 is highly asymmetrical, like a russet potato. Yet, a new, highly detailed analysis of the motion of stars around its central supermassive black hole - the first black hole to be imaged by the Event Horizon Telescope (EHT) in 2019 - reveals that it’s not as perfect as it looks. (Illustration by NASA, ESA, Joseph Olmsted/STScI, Frank Summers/STScI Science by Chung-Pei Ma/UC Berkeley)Seen from Earth, the giant elliptical galaxy M87 is just a two-dimensional blob, though one that appears perfectly symmetrical and thus a favored target of amateur astronomers. This created a three-dimensional view of how stars are distributed within the galaxy. Because the galaxy is too far away for astronomers to employ stereoscopic vision, they instead followed the motion of stars around the center of M87, like bees around a hive. If the combustion air is supplied from the outside of the building, then these inserts can work in rooms with mechanical ventilation (recuperation).A photo of the huge elliptical galaxy M87 is compared to its three-dimensional shape as gleaned from meticulous observations made with the Hubble and Keck telescopes. Nemo TopEco Series distinguish with high tightness. Inner walls of insert made of material with excellent accumulative performance, ceramic deflector Refrabox and the original system of air distribution guarantee achieving high efficiency and maintaining high combustion culture. Grate-free insert design and well thought out, failure-free combustion air distribution system make that glass stays clear and water exchanger keeps optimal temperature. You can both enjoy the heat evenly distributed to the farthest spaces and beautiful vision of the burning fire. Nemo TopEco insert series with water heat exchanger perfectly combine water heating of the whole house with the esthetic vision of the fireplace.
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