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programming numerical algorithms for astrophysical applications.


Sep
5
comment Why are explosions always used to represent the Big Bang?
Where is the evidence? I've not yet come accross the comparison with an explosion.
Sep
5
answered Potential Re-Capture of Rogue Planets
Sep
5
comment Potential Re-Capture of Rogue Planets
voting without commenting is fine and should be the norm. As to your question, I think your first paragraph contains an error: you are interested in objects of the second category (not first); please correct.
Sep
5
comment is there any theory or observational evidence that our universe is electrically neutral or not?
Note that the paper by Düren (the one you quoted in your comment) has not appeared in any peer-reviewed journal. That is a serious indication that it didn't make it through the review process for some good reasons, e.g. it violates known observational constraints.
Sep
5
revised Determining effect of small variable force on planetary perihelion precession
added summary of results; pointed out disagreement with GR
Sep
5
revised Determining effect of small variable force on planetary perihelion precession
added 550 characters in body
Sep
5
awarded  Revival
Sep
4
revised Determining effect of small variable force on planetary perihelion precession
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Sep
4
revised Determining effect of small variable force on planetary perihelion precession
changed notation to use v for velocity
Sep
3
revised Determining effect of small variable force on planetary perihelion precession
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Sep
3
comment Determining effect of small variable force on planetary perihelion precession
See my edited/corrected answer. The formula has changed ...
Sep
3
revised Determining effect of small variable force on planetary perihelion precession
corrected errors in algebra: wrong exponent of (1-e cos(eta)) in orbit average and factor (1-e^2)
Sep
3
revised Determining effect of small variable force on planetary perihelion precession
added 24 characters in body
Sep
3
revised Could the universe have evolved differently?
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Sep
3
comment Could the universe have evolved differently?
You didn't ask it like that ("slightly different").
Sep
3
comment Can the Gaia telescope detect small temporarily captured asteroids near its Lagrange orbit?
Your answer is wrong. The question considered asteroids near Earth's L1 point. Trojans are near L4 and L5. Detectability of the latter doesn't imply that of the former, even if they existed.
Sep
3
comment Can the Gaia telescope detect small temporarily captured asteroids near its Lagrange orbit?
A small object reflects less light and my be below the significance limit of the CCD. From a single scan one only knows "there was something there in this direction" (which is accurate in one dimension and inaccurate in the other), but god know what. This is not a detection.
Sep
2
comment Is there a paper on galaxy mergers in clusters of galaxies?
Actually, asking us for a good reference for something is a bit cheeky. I would think that you should go and search for yourself. It's unlikely that anybody here will know an up-to-date answer without searching. And, don't trust those simulations...
Sep
2
reviewed Approve suggested edit on Is there a paper on galaxy mergers in clusters of galaxies?
Sep
2
answered Fate of the Spiral Arms of the Milky Way and Andromeda