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Post Info TOPIC: Stein 2051 B
Blobrana


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Posts: 131433
Date:
2MASS J04311201+5858476
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Einstein's 'impossible' hope: Light bending theory directly observed in distant stars for first time

Astronomers have used the gravitational warping of light, predicted by Einstein nearly a century ago, to measure the mass of a distant star for the first time.
The team, led by Kailash Sahu of the Space Telescope Science Institute in Baltimore, measured the mass of a white dwarf star called Stein 2051 B as it passed in front of another more distant star - an event Einstein thought would be impossible to observe.
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Blobrana


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Posts: 131433
Date:
Stein 2051 B
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Hubble Astronomers Develop a New Use for a Century-Old Relativity Experiment to Measure a White Dwarf's Mass

Hubble observed the nearby white dwarf star Stein 2051 B as it passed in front of a background star. During the close alignment, the white dwarf's gravity bent the light from the distant star, making it appear offset by about 2 milliarcseconds from its actual position. This deviation is so small that it is equivalent to observing an ant crawl across the surface of a quarter from 1,500 miles away.
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