Winking stars could reveal Galaxy's black hole

Croswell, K.
February 1992
New Scientist;2/29/92, Vol. 133 Issue 1810, p21
Reports on a method proposed by researchers at Northwestern University in Illinois that makes use of a phenomenon called gravitational lensing to determine what the center of the galaxy is made of. Center is marked by a peculiar source of radiowaves known as Sagittarius A; Effect would be detectable by a future generation of infrared and radio telescopes.


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