Rotating Neutron Stars
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Transcript of Rotating Neutron Stars
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Rotating Neutron StarsPhil Rosenfield, Fridolin Weber, Horst Lenske
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Outline
Neutron stars: a short synopsis The structure of neutron stars Modeling neutron stars
The equation of state Rotating or non-rotating
Two results Conclusions
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IntroductionA neutron star is left over from the supernova of a star not massive enough to leave a black hole.
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Introduction
Mass: 1-2 MSun Radius: 10 - 15 km Huge magnetic
fields Extremely dense Fastest Rotation
Rate: 1122 Hz 107−9 in a typical
galaxyIf I could get my bike tires going that fast, I’d be moving at 1,700 mph.On the surface of a typical sized neutron star, particles are moving at 80%c!
Objects that don’t make sense, that can’t be explained with current theories, are the guides that lead us to better understanding our universe.
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The structure of neutron stars
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Modeling Neutron Stars
NON ROTATING
Spherically Symmetric Curved space-time
ROTATING
Poles shrink, equator bulges
Maximum rotation rate
Frame dragging
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ResultsMASS-EQUATORIAL RADIUS Rotation Larger
Radius
PERIOD-MASS
Rotation More mass
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Conclusions
Rotation matters These equations of
state can explain the fastest spinning neutron stars
What’s NextGoing to grad school – hope to look for more neutron stars