2020.10.06 07:39
2020.10.06 10:56
2020.10.06 16:16
"Reinhard Genzel studies infrared- and submillimetre astronomy. He and his group are active in developing ground- and space-based instruments for astronomy. They used these to track the motions of stars at the centre of the Milky Way, around Sagittarius A*, and show that they were orbiting a very massive object, now known to be a black hole.[6] Genzel is also active in studies of the formation and evolution of galaxies.[7]In July 2018, Reinhard Genzel et al. reported that star S2 orbiting Sgr A* had been recorded at 7,650 km/s or 2.55% the speed of light leading up to the pericentre approach in May 2018 at about 120 AU ≈ 1400 Schwarzschild radii from Sgr A*. This allowed them to test the redshift predicted by general relativity at relativistic velocities, finding additional confirmation of the theory."
2020.10.06 16:52
Nobel Prize에는 언제부터인가 그 가치와 의미에 흥미를 잃기 시작했읍니다.
여기에도 Racial element가 다분히 있는듯... 잇건 없건... They are too far unrealistic to us.
Well, let them have their own fun. Maybe, their glories are none of our business.
Doc, I do not want to see any more Nobel prize data or stories on our website.
Even the damn idiot Trump was vying for the Nobel Peace Prize. Can you believe that??!!
So many politicians have been awarded that even Trump thought he has a chance... LOL.
This website is for something related to our own life and hobbies.
I appreciated your effort so far. Please "No more". Thank you.
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"Andrea Mia Ghez (born June 16, 1965) is an American astronomer and professor in the Department of Physics and Astronomy at UCLA.[2] In 2004, Discover magazine listed Ghez as one of the top 20 scientists in the United States who have shown a high degree of understanding in their respective fields.[2] In 2020, she was awarded the Nobel Prize in Physics, sharing one half of the prize with Reinhard Genzel, "for the discovery of a supermassive compact object at the centre of our galaxy."[3][4] The other half was awarded to Roger Penrose. She is the fourth woman to be awarded the Nobel Prize in Physics.[5]"
"By imaging the Galactic Center at infrared wavelengths, Ghez and her colleagues have been able to peer through heavy dust that blocks visible light, and to produce images of the center of the Milky Way. Thanks to the 10 m aperture of the W.M. Keck Telescope and the use of adaptive optics to correct for the turbulence of the atmosphere, these images of the Galactic Center are at very high spatial resolution and have made it possible to follow the orbits of stars around the black hole, which is also known as Sagittarius A* or Sgr A*. The partial orbits of many stars orbiting the black hole at the Galactic Center have been observed. One of the stars, S2, has made a complete elliptical orbit since detailed observations began in 1995. Several decades more will be required to completely document the orbits of some of these stars; these measurements may provide a test of the theory of general relativity. In October 2012, a second star was identified by her team at UCLA, S0-102, orbiting the Galactic Center.[24] Using Kepler's third law, Ghez's team has used the orbital motion to show that the mass of Sgr A* is 4.1±0.6 million solar masses.[25] Because the Galactic Center (where Sgr A* is located) is one hundred times closer than M31 (where the next nearest known supermassive black hole M31* is located),[26] it is now one of the best demonstrated cases for a supermassive black hole.