Tag: gravitational lensing
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Finding all the matter in the cosmos — even the invisible stuff
[ This blog is dedicated to tracking my most recent publications. Subscribe to the feed to keep up with all the science stories I write! ] “Weak Lensing” Helps Astronomers Map the Mass of the Universe By making galaxies a little bit brighter, it points the way to elusive galaxies and lets us detect that…
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Measuring black hole rotation halfway across the Universe
Astronomers measured the rotation of a black hole from halfway across the Universe. Astronomers have now used gravitational magnification to measure the rotation rate of a supermassive black hole in a very distant galaxy. From four separate images of the same black hole, R.C. Reis, M.T. Reynolds, J.M. Miller, and D.J. Walton found it was…
Bowler Hat Science 