Quote:
Originally posted by om@umr.edu@Mar 25 2004, 03:15 PM
Physics On-Line also has a discussion about evidence for and against an iron-rich Sun and posted a lot of background information there.
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OK, I've read the stuff on the Physics link, and the collection of papers.
Please correct me if I am wrong about the rough structure of the sun that you are proposing:
0-10 km -------- neutron star
10-250,000 km-- iron core
250,000 - 485,000 km -- rocky molton outer core
485,000 - 695,000 km -- hydrogen-rich atmosphere
Note, I haven't seen anything in your paper giving the depth of the rocky to iron core transition.
I have a lot of concerns about this model, but the easist to point out is the mass problem. Even assuming that the iron and rocks resist compression we get a mass of the three core components as:
neutron star ---- 1.6e33 grams [minimum mass of known neutron stars]
iron core--------- 5e32 grams [density of 8 gm/cc]
outer core ------ 1.6e33 grams [density of 4 gm/cc]
the result, 3.7e33 grams [not counting the atmosphere] is almost 2 times the mass of the sun as measured by the orbits of the planets.
I have a few other immediate concerns:
1. What helioseismology study do you site saying there is possibly a solid body in the sun at 70% of the radius? This is new to my research.
2. What is preventing the iron core from rapidly accreting onto the neutron star and becoming gravitationally crushed into neutrons?
3. How do you assume that neutrons are able to escape from the neutron star's gravity and still have 10 MeV of thermal energy that they can contribuite to their surroundings?