Quarks to Cosmos Lecture Sheet 13

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Pulsars & Neutron Stars

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13 Terms

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What is an LGM?"Little Green Men” nickname for first pulsars.

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Why do pulsars pulse?

Rotating beams from magnetic poles.

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What is a millisecond pulsar?

Fast “recycled” pulsar.

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Mass required for pulsar formation?>8 solar masses originally.

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What prevents NS collapse?

Neutron degeneracy pressure.

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Max NS mass?~2–3 solar masses.

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Escape velocity of Earth?~11 km/s.

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Escape velocity of neutron star?~0.3c.

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What is a GRB?

Gamma-ray burst.

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Why GRBs confusing initially?

Unknown distance; huge energy.

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Accretion disk?

Rotating infalling material.

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Kilonova?

Short-lived EM burst from neutron star merger.

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Collapsar?

Massive star collapsing to black hole.