Neutron stars: good short article

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Discussion Overview

The discussion revolves around neutron stars, exploring their properties, characteristics, and some intriguing concepts related to them. Participants share insights from a short article intended for a broad scientific audience, as well as personal reflections on the nature of neutron stars and related astrophysical phenomena.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant highlights the value of a short encyclopedia article on neutron stars, noting its concise presentation of interesting facts about their crust and core.
  • Another participant introduces the concept of the "neutron drip point," where high neutron density leads to some neutrons becoming free, expressing excitement about learning this detail.
  • A third participant references a lecture by Walter Lewin, mentioning the dramatic energy release when a marshmallow is dropped onto a neutron star's surface, comparing it to the energy of the Hiroshima A-bomb.
  • Some participants speculate about the nature of neutron stars' cores, with one suggesting the possibility of them being quark stars, reflecting on the bizarre characteristics of neutron stars.
  • A humorous exchange occurs regarding the potential energy release from a pickled squirrel head if dropped on a neutron star, indicating a playful tone amidst the scientific discussion.

Areas of Agreement / Disagreement

Participants express curiosity and share interesting facts, but there is no consensus on the nature of neutron stars' cores or the implications of the discussed phenomena. Speculation about quark stars remains unresolved.

Contextual Notes

The discussion includes speculative ideas about neutron stars and their cores, with some claims depending on definitions and assumptions that are not fully explored or agreed upon.

marcus
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one reason it's good is that it is
written for the Wiley "Encyclopedia of Physics"

http://arxiv.org/abs/physics/0503245
Neutron Stars
Gordon Baym, Frederick K. Lamb
Comments: Encyclopedia of Physics 3rd ed., R.G. Lerner and G.L. Trigg, eds., Wiley-VCH, Berlin

Abstract: "This short encyclopedia article, reviewing current information on neutron stars, is intended for a broad scientific audience."

It is only 3 pages and jams a lot of interesting facts about the topic into small space.

It had stuff I didnt know about the crust and about the core. the whole star isn't made just of neutrons. you might find it worth checking out
 
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I always enjoy discovering new things about monsters of the kind of neutron stars. In this occasion, the thing that is new to me is the concept of "neutron drip point", that is, the point where the density of neutrons is so high that not all can be accommodated in the nuclei and some become free

Gotta love the articles like that, direct and to the point
 
For a nice entry-level lecture on white dwarves, neutron stars and black holes by Walter Lewin, click here and scroll down a little way.

http://www.physics.northwestern.edu/pub_lectr/public_lectures.html

IIR, he says that a marsmallow dropped onto the surface of a neutron star will arrive at a substantial fraction of the speed of light and will release as much energy as the Hiroshima A-bomb.
 
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I always suspected marshmallows were not as innocuous as they appear. Neutron stars are indeed bizarre denizens. Physicists would love to know goes on in the core. There is some speculation the core is actually a quark star.
 
Chronos said:
I always suspected marshmallows were not as innocuous as they appear. Neutron stars are indeed bizarre denizens. Physicists would love to know goes on in the core. There is some speculation the core is actually a quark star.
I imagine that a pickled squirrel head (much more massive than a marshmallow, you must agree) would release energies greater than the total of the military arsenals of many countries. I am going to report you to the U.S. head of Homeland Security, since it is by now obvious that you are a serious threat to the continued existence of the Earth. It is obvious now why you have been hoarding pickled squirrel heads, instead of sending them to me for family get-togethers, etc. The only remaining component you need now to complete your doomsday machine is a neutron star!
 
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