I voted for z=20, tho I would not be seriously uncomfortable until z=40. In those intervals, the speed of aging/evolution in the young universe can be fine-tuned by the addition of Primordial Black Holes (of mass greater than Luna), and stable decay relics of those with mass less than Luna...
Everybody's hung up over the point-singularity. Step down one dimension and look at a near-degenerate torus. Draw a large circle on paper. Extend a radius outside of the circle by an amount very small as compared to the radius. Using the endpoint of the radius as center, revolve the circle...
Coincidences:
1. Each galaxy is the dominant member of a sparse galaxy group.
2. Each galaxy is suspected of harboring a SMBH—M81 has two.
Consider the coincidences in the light of Karachentsev’s conclusions:
http://arxiv.org/astro-ph/0410065
It is tempting, when debunking the...
"... and look at what Subaru found when it took a deep look at a 'primordial' LG dwarf (all sorts of evidence of evolution)"
Were you perhaps referring to the Ursa Minor dwarf spheroidal? It seems to have two nuclei of unequal size, with a central void which is not a superbubble. Stellar...
Nereid: I would like your comments on this one.
http://arxiv.org/astro-ph/0506753
It seems to discount both prominent CDM halo models, at least for Low Surface-Brightness Galaxies. At first I thought the sample might have been dominated by recent impacts/mergers, leaving a...
One-face moon
Moons interior to Iapetus' current position rotate. Iapetus is currently tide-locked. Why? The model requires four sequential unlikelihoods:
1) Iapetus was an interior moon for at least long enough for its rotation to synchronize with its revolution.
2) Its orbital...
"Why do you think it needs to be smooth at all, it might be in a vacuum but certainly not in matter!"
If you read my proposition carefully, you will note that binning the data by zenith angle and recoil energy causes all matter effects to cancel. I'm simply tired of seeing the in vacuo...
I asked my original question of an expert. The answer I received was not to the question I asked, so I presume it was filtered thru a secretary or lab assistant. Nevertheless, here it is:
As far as I understand, you proposed analysis has been done in a
combined way using a more general...
This is a very entertaining thread. One of the ideas only very briefly mentioned was Primordial Black Holes. I'd like to expound a bit. The upper limit for the mass-equivalence of a PBH is established by WMAP CMB data, and by the horizon problem-- PBH's that are too 'massive' scission off and...
The only requirement for BH formation is (matter or energy) density. During the initial picosecond or so of the BB, local density knots could have failed to participate in the general expansion/inflation, giving rise to a spectrum of Primordial BH's. Strictly speaking, they were never composed...
[sigh] another lovely equation for the in vacuo oscillation, with enough unknown/unconstrained parameters to render it unmeaningful.
Assume, for the sake of discussion, that the total neutrino flux at the solar surface is relatively constant, or at least stochastically so. We represent it...
"I mean the entire premise of that model is in that very basic fact; you simply would not observe such a thing if they never mixed."
Precisely the point-- a model-dependent assumption, not an experimentally demonstrated fact-- and it really doen't matter which model is being talked about...
"There is indeed a difference between perihelion and aphelion, but its not quite for the reasons you might expect."
And... is this documented? I have special anti-jargon hip-boots.
The precise reason for my original question was to discriminate between matter-induced effects (MSW, etc.)...
I have sampled those, not exhaustively searched them. One would think, assuming solar emission constant, that the difference between perihelion and aphelion would show the effect, if it exists. One would also have to correct for distance-squared dropoff. Can it be that the statistical...
Hi, I'm Steve, the new guy. After a long literature search, I have been unable to find any reference to experimental confirmation of neutrinos of any type oscillating in a vacuum. All of the many models under discussion seem to assume that they oscillate, but nowhere have I been able to find a...