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gfxtwin

There might be a clear image of a supermassive Black Hole soon

6 posts in this topic

The one at the center of our galaxy.

 

http://theconversation.com/astronomers-to-peer-into-a-black-hole-for-first-time-with-new-event-horizon-telescope-74559

 

image-20170314-10716-1eoz1nw.jpg

 

 

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By connecting a global array of radio telescopes together to form the equivalent of a giant Earth-sized telescope – using a technique known as Very Long Baseline Interferometry and Earth-aperture synthesis – scientists will peer into the heart of our Milky Way galaxy where a black hole that is 4m times more massive than our sun – Sagittarius A* – lurks.

 

 

Quote

The resolution of a single radio telescope (typically with an aperture of 100 metres) is roughly about 60 arc seconds. This is comparable to the resolution of the unaided human eye and about a sixtieth of the apparent diameter of the full moon. But by connecting many telescopes, the Event Horizon Telescope will be about to achieve a resolution of 15-20 microarcsecond (0,000015 arcseconds), corresponding to being able to spy a grape at the distance of the moon.

 

 

Quote

If it works, imaging the material inside the black hole region with angular resolutions comparable to that of its event horizon will open a new era of black hole studies and solve a number of big questions: do event horizons even exist? Does Einstein’s theory work in this region of extreme strong gravity or do we need a new theory to describe gravity this close to a black hole? Also, how are black holes fed and how is material ejected?

It may even even be possible to image the black holes at the centre of nearby galaxies, such as the giant elliptical galaxy that lies at the heart of our local cluster of galaxies.

 

 

 

 

 

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