Gravitational Memory Test Proposed

This is a news story, published by Live Science, that relates primarily to LIGO news.

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gravitational waves

Live Science

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Science

Unproven Einstein theory of 'gravitational memory' may be real after all, new study hints

Summary

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76% Informative

Scientists propose new way to test gravitational wave theory: gravitational memory.

This effect refers to a permanent shift in the fabric of the universe caused by gravitational waves.

The researchers suggest that the cosmic microwave background might carry the signatures of powerful gravitational waves from distant black hole mergers.

These waves have already been detected by observatories such as LIGO and Virgo interferometers.

Supermassive black holes range from a few million to tens of billions of times the mass of the sun.

Accounting for this variation will be important in future studies.

"Right now, the effect we're studying is incredibly subtle. However, it's possible that in certain regions of the sky, it could be unexpectedly strong," Hendriks said.

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