New Era of Gravitational Wave Detections –“Unveils Secrets of Life and Death of Stars”

 

Merging Black Holes

 

A gravitational wave isn’t a ripple through objects in spacetime; it passes through spacetime itself. Gravitational waves make the Universe itself vibrate, says Brian Clegg, author of Gravitational Waves: How Einstein’s Spacetime Ripples Reveal the Secrets of the Universe.

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Gravitational Waves Confirm Stephen Hawking –“One Day They May Reveal Unknown Objects”

Black Hole Merger

 

“It is possible that there’s a zoo of different compact objects, and while some of them are the black holes that follow Einstein and Hawking’s laws, others may be slightly different beasts,” says Maximiliano Isi, a NASA Einstein Postdoctoral Fellow in MIT’s Kavli Institute for Astrophysics and Space Research and lead author of a study about a signal from a gravitational wave merger. 

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“Dragging Spacetime” –Predicted by Einstein’s General Theory of Relativity

 

spacetime

 

“After ruling out a range of potential experimental errors, we started to suspect that the interaction between the white dwarf and neutron star was not as simple as had been assumed to date,” concluded Willem van Straten, an astronomer at the Auckland University of Technology, about the detection of Lense-Thirring precession. This relativistic effect first hypothesized a century ago alters the orbit of two compact massive objects in a binary star system. The results of the twenty-year study confirm a prediction of Einstein’s general theory of relativity. When a massive object rotates, general relativity predicts that it pulls the surrounding spacetime around with it, a phenomenon known as frame-dragging.

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A Surprise Almost as Old as the Universe -Hubble Detects Invisible Mass of Small Black Holes at Globular Cluster Core

 

Globular Cluster NGC 6397

 

Hubble astronomers found something extraordinary at the heart of nearby globular cluster NGC 6397 –a concentration of smaller black holes lurking there instead of one monster, supermassive black hole. Ancient stellar jewelry boxes, globular star clusters are densely packed objects, glittering with the light of a million stars in a ball only about 100 light-years across dating back almost to the birth of the Milky Way.

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