首選推薦十一篇2020/2019/2018/2016錄取榜(點擊標題即可閱讀):
安德烈婭·M·蓋茲
Andrea M. Ghez
"It's a passion for the universe!" That's how Andrea Ghez succinctly sums-up her motivation for becoming an astrophysicist in this conversation recorded with Adam Smith shortly after she heard the news of her Nobel Prize in a 2am call from Stockholm. As only the fourth female Nobel Laureate in Physics, she describes the Prize as "An opportunity and a responsibility." Celebrating diversity in science, Ghez reflects that "Seeing people who look like you, or are different from you, succeeding shows you that there's an opportunity." And regarding the 'other' team of her co-laureate Reinhard Genzel, she concludes, "There's nothing like competition to keep you going!"
出生
1965年6月16日(55歲)
美國紐約州紐約
國籍麻省理工學院 (B.S. Physics, 1987)
加州理工學院 (Ph.D., 1992)
知名使用自適應光學研究星系中心
研究領域加州大學洛杉磯分校
安德烈婭·米婭·蓋茲(Andrea Mia Ghez,1965年6月16日-),美國天文學家,加州大學洛杉磯分校物理學和天文學教授,在對於銀河系中心的研究領域頗具盛名。2004年,《發現》雜誌將其列為美國前20位在各自領域表現出高度理解力的科學家之一。2020年,她被授予諾貝爾物理學獎,與賴因哈德·根策爾各自享有四分之一的獎金,「因為在銀河系中心發現了一個超大質量緻密天體。」另一半獎金被授予羅傑·彭羅斯。蓋茲是繼2018年唐娜·斯特裡克蘭後第四位獲得諾貝爾物理學獎的女性。
Andrea Mia Ghez (born June 16, 1965) is an American astronomer and professor in the Department of Physics and Astronomy at UCLA, known for studying the center of the Milky Way galaxy. In 2020, she became the fourth woman to be awarded the Nobel Prize in Physics, sharing one half of the prize with Reinhard Genzel (the other half of the prize being awarded to Roger Penrose). The Nobel Prize was awarded to Ghez and Genzel for their discovery of a supermassive compact object, now generally recognized to be a black hole, in the Milky Way's galactic center.
Ghez was born in New York City, the daughter of Susanne (Gayton) and Gilbert Ghez. Her father, of Jewish heritage, was born in Rome, Italy, to a family originally from Tunisia and Frankfurt, Germany. Her mother was from an Irish family and she was educated in Catholic schools in North Attleborough, Massachusetts.
Ghez attended the University of Chicago Lab School. The Apollo program's Moon landings inspired Ghez to want to become the first female astronaut and her mother supported her goal. Her most influential female role model was her high school chemistry teacher. She started out in college by majoring in mathematics but changed to physics. She received a BS in physics from the Massachusetts Institute of Technology in 1987 and her Ph.D. under the direction of Gerry Neugebauer at the California Institute of Technology in 1992.
Her current research involves using high spatial resolution imaging techniques, such as the adaptive optics system at the Keck telescopes, to study star-forming regions and the supermassive black hole at the center of the Milky Way known as Sagittarius A*. She uses the kinematics of stars near the center of the Milky Way as a probe to investigate this region. The high resolution of the Keck telescopes gave a significant improvement over the first major study of galactic center kinematics by Reinhard Genzel's group.
In 2004, Ghez was elected to the National Academy of Sciences, and in 2019, she was elected as a Fellow of the American Physical Society (APS).
She has appeared in a long list of notable media presentations. The documentaries have been produced by organizations such as the BBC, Discovery Channel, and The History Channel, and in 2006 there was a presentation on the PBS television series Nova. She was identified as a Science Hero by The My Hero Project. In 2000, 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.
Black Hole at the Galactic Center (Sgr A*)
Main article: Sagittarius A*
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. 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. 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), it is now one of the best demonstrated cases for a supermassive black hole.
In 2020, Ghez shared the Nobel Prize in Physics with Roger Penrose and Reinhard Genzel, for their discoveries relating to black holes. Specifically, Ghez and Genzel were awarded one half of the prize for their discovery that a supermassive black hole, most likely, governs the orbits of stars at the center of the Milky Way. Ghez was only the fourth woman to win the physics Nobel since its inception, being preceded by Marie Curie (1903), Maria Goeppert Mayer (1963), and Donna Strickland (2018).
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