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Neutron-Star Mountains May Be Only Fractions of Millimeters High

Dragon
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Post by Dragon Tue Jul 20, 2021 2:50 am

Because of their compactness, neutron stars have an enormous gravitational pull around a billion times stronger than the Earth.

This squashes every feature on the surface to miniscule dimensions, and means that the stellar remnant is an almost perfect sphere.

Whilst they are billions of times smaller than on Earth, these deformations from a perfect sphere are nevertheless known as mountains.

Past studies have suggested that neutron stars can sustain deviations from a perfect sphere of up to a few parts in one million, implying the mountains could be as large as a few centimeters.

Those calculations assumed the neutron star was strained in such a way that the crust was close to breaking at every point.

However, the new model indicates that such conditions are not physically realistic.


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Post by Dragon Tue Jul 20, 2021 2:52 am

Neutron-Star Mountains May Be Only Fractions of Millimeters High Image_9265-Neutron-Star
Image credit: Sci-News.com.

An artist’s impression of a neutron star.

In the new research, the scientists used computational modeling to build realistic neutron stars and subject them to a range of mathematical forces to identify how the mountains are created.

They also studied the role of the ultra-dense nuclear matter in supporting the mountains.

They found that the largest mountains produced were only a fraction of a millimeter tall, one hundred times smaller than previous estimates.


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Neutron-Star Mountains May Be Only Fractions of Millimeters High 334pu7m
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Post by Dragon Tue Jul 20, 2021 2:53 am



Doomed Neutron Stars Create Blast of Light and Gravitational Waves


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Neutron-Star Mountains May Be Only Fractions of Millimeters High 334pu7m
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Post by Dragon Tue Jul 20, 2021 2:54 am



Colliding Neutron Stars Create Black Hole and Gamma-ray Burst


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