Neutron Stars 1

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Rotating Neutron Stars, Pulsars and Supernova Remnants

If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate. Advanced search. Skip to main content. Subscribe Search My Account Login. Abstract I SHALL discuss here some problems connected with theories linking the pulsars to the rotation of neutron stars ref. Rent or Buy article Get time limited or full article access on ReadCube.

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Neutron Star | COSMOS

Author information Author notes F. Rights and permissions Reprints and Permissions. Tsintsadze , Renato Fedele , Q. Mignani , A. Shearer , A.

Neutron stars with outbursts from superfluid crust

Marshall , L. D candidate at the University of Virginia, told Gizmodo.

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Calculating the mass of neutron starts is important for understanding how such strange objects can exist in the first place. Though astronomers generally consider the neutron star mass to be around 1.

What If a Spoonful of Neutron Star Appeared on Earth?

An international collaboration of scientists, called NANOGrav, has been observing dozens of neutron stars for the past 12 years using the Green Bank and Arecibo telescopes. The effort is part of a hunt for low-frequency gravitational waves—ripples in spacetime like those recently discovered by LIGO but with more time between the crests. This pulsar forms a binary with another compact object called a white dwarf. The two objects orbit each other, and, from our viewing perspective here on Earth, pass in front of one another.

Finding these kinds of systems to study is rare, since they must be tilted at just the right angle from our perspective on Earth. Much of that was already known from earlier theoretical studies and observations of the afterglow, but the real importance of Fong's work to astronomers is that it reveals the context in which the original collision happened.

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It shows what we had suspected in our work from earlier Hubble observations," said Joseph Lyman, an astronomer at the University of Warwick in England, who led an earlier study of the afterglow. Globular clusters are regions of space dense with stars, Lyman, who wasn't involved in the new effort, told Live Science.

Neutron stars are rare, and neutron-star binaries, or pairs of neutron stars orbiting each other, are even rarer. Early on, astronomers had suspected that merging neutron-star binaries would be most likely to turn up in regions of space where stars were tightly clustered and swinging around one another wildly. Lyman and his colleagues, analyzing that earlier Hubble data, turned up some evidence that might not be the case.

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An important reason to study these afterglows, Fong said, is that it might help us understand short gamma-ray bursts — mysterious blasts of gamma rays that astronomers occasionally detect in space. The difference in those cases on top of astronomers not detecting any gravitational waves that would confirm their nature is the angle of the mergers to Earth.

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  • Earth had a side view of the afterglow of this merger, Fong said. We got to see the light rise and then fade over time. But when short gamma-ray bursts happen, she said, "It's like you're looking down the barrel of the firehose. One of the jets of escaping matter in those instances, she said, is pointed at Earth.

    Then the point of light will slowly fade as the slower-moving particles reach Earth and become visible.

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    But it offers researchers more material than they've ever had before for studying a neutron-star merger's afterglow. Editor's note: This story was corrected at p.