Well, I certainly can’t dispute that; why do the myths hint at Sirius B as a “dark companion” to Sirius A or that Sirius B is a super dense star?Nick C said: So according to EU theory Sirius B is not a super dense star with the mass of the Sun squeezed into the size of a planet, then where did the Dogon come up with that idea?
There is some “evidence” that the “mathematical models” of Sirius B as a "super dense star" are correct.
White Dwarf Theories Get More Proof
http://www.universetoday.com/2005/01/12 ... ore-proof/
On the other hand …Observations of the white dwarf star, Sirius B, made with NASA’s Far Ultraviolet Spectroscopic Explorer (FUSE) satellite give astronomers firm new evidence that mathematical models widely used to predict white dwarf star mass and radius are correct.
The FUSE result is important because Sirius B is one of the few stars that astronomers have to test their ideas on the relationship between mass and radius for white dwarf stars. White dwarf stars are small but astonishingly dense stars. Sirius B is the size of the Earth and as massive as the sun.
http://www.daviddarling.info/encycloped ... usred.html
Why do myths refer to Sirius B as “dark” in comparison to Sirius A?This, however, is not the end of the Sirius mystery because the Dogon include in their traditions the belief that Sirius once appeared red, as indeed it would have done when it passed through its red giant phase in the remote past. Long ago, as a red giant, Sirius B would have greatly outshone its conventionally-sized, white companion so that the combined system, as seen from Earth, would have looked like a single brilliant red star. The trouble is, according to current theories of stellar evolution, there is no way that Sirius B could have evolved from a red giant to its present white dwarf stage in a matter of a few thousand years.
First, over half a century ago, when Griaule first noted the Dogon reference to the red color of Sirius, astronomers had not established the red giant/white dwarf evolutionary link (in fact, the consensus at the time was that red giants were very young stars.) Second, historical references to a red Sirius are not confined to the Dogon. In ancient Babylonian, Greek, and Roman literature, the appearance of Sirius is likened to that of Mars and the orange-red star Arcturus. Both Seneca, in the first century AD, and Ptolemy, in the second, mention Sirius as being red, while in the sixth century, Gregory of Tours, in a text intended to guide monks in their vespers duties, gives Sirius the nickname Rubela, meaning "ruddy."
Unfortunately, even this additional mystery does not require the theory of alien intervention. A credible astrophysical explanation has been put forward according to which, although Sirius B could not have been a red giant in historical times, it may nevertheless have taken on the appearance of one. A white dwarf is made up of a highly compressed carbon-oxygen core surrounded by a thin layer of helium topped with a very thin "atmosphere" of hydrogen. The suggestion is that it might be possible for a small amount of hydrogen to percolate down into the interior and then, with carbon and oxygen acting as nuclear catalysts, for the hydrogen to begin fusing into helium. This sudden, brief resumption of energy-making would release a pulse of heat which, upon reaching the surface, would cause the hydrogen atmosphere to billow out to thousands of times its normal size. As the atmosphere expanded it would cool and glow bright red. Calculations indicate that after about 250 years the atmosphere would collapse again, losing its ruddy brilliance and returning the white dwarf to its previous state of dim anonymity.
Are “dark stars” those that are in “dark current mode”? Were Sirius A and Sirius B formed by fissioning? Could the difference in mass and current density between Sirius A and B have anything to do the fact that during fissioning, they became two unequally sized spheres?
Red and Brown Dwarfs
The first region on the lower right of the diagram is where the current density has such a low value that double layers (DLs) (photospheric granules) are not needed by the plasma surrounding the (anode) star. This is the region of the brown and red "dwarfs" and giant gas planets. Recent discoveries of extremely cool L - Type and T - Type dwarfs has required the original diagram to be extended to the lower right (See below). These 'stars' have extremely low absolute luminosity and temperature.
The orbiting X-ray telescope, Chandra, recently discovered an X-ray flare being emitted by a brown dwarf (spectral class M9). This poses an additional problem for the advocates of the stellar fusion model. A star this cool should not be capable of X-ray flare production.
However, in the ES model, there are no minimum temperature or mass requirements because the star is inherently electrical to start with. In the ES model (if a brown/red dwarf is operating near the upper boundary of the dark current mode), a slight increase in the level of total current impinging on that star will move it into the normal glow mode.
Main Sequence Stars
Continuing toward the left, beyond the "knee of the curve", all these stars (K through B) are completely covered with tufts (have complete photospheres), their luminosity no longer grows as rapidly as before. But, the farther to the left we go (the higher the current density), the brighter the tufts become, and so the stars' luminosities do continue to increase. The situation is analogous to turning up the current in an electric arc welding machine
White and Blue Stars
When we get to the upper left end of the main sequence, what kind of stars are these? This is the region of O type, blue-white, high temperature (35,000+ K) stars. As we approach the far upper-left of the HR diagram (region of highest current density), the stars are under extreme electrical stress - too many Amps per sq. meter. Their absolute luminosities approach 100,000 times the Sun's. Even farther out to the upper left is the region of Wolf-Rayet stars. Extreme electrical stress can lead to a star's splitting into parts, perhaps explosively. Such explosions are called novae. The splitting process is called fissioning. A characteristic of Wolf-Rayet stars is that they are losing mass rapidly.
Wal Thornhill once said:
"….. internal electrostatic forces prevent stars from collapsing gravitationally and occasionally cause them to "give birth" by electrical fissioning to form companion stars and gas giant planets. Sudden brightening, or a nova outburst marks such an event. That elucidates why stars commonly have partners and why most of the giant planets so far detected closely orbit their parent star."
If a sphere of fixed volume splits into two smaller (equal sized) spheres, the total surface area of the newly formed pair will be about 26% larger than the area of the original sphere. (If the split results in two unequally sized spheres, the increase in total area will be something less than 26%.) So, to reduce the current density it is experiencing, an electrically stressed, blue-white star may explosively fission into two or more stars. This provides an increase in total surface area and so results in a reduced level of current density on the (new) stars' surfaces. Each of two new (equal sized) stars will experience only 80% of the previous current density level and so both will jump to new locations farther to the lower-right in the HR diagram.
If the members of the resulting binary pair turn out to be unequal in size, the larger one will probably have the larger current density - but still lower than the original value. (This assumes that the total charge and total driving current to the original star distributes itself onto the new stars proportionally to their masses.) In this case, the smaller member of the pair might have such a low value of current density as to drop it, abruptly, to "brown dwarf" or even "giant planet" status. That may be how giant gas planets get born (and are in close proximity to their parents).
The final distribution of mass and current density is sensitive to the mechanics of the splitting process. Such a process can only be violent - possibly resulting in a nova eruption. Some mass may be lost to the plasma cloud that later can appear as a planetary nebula or nova-remnant that surrounds the binary pair. If the charge on the original star was highly concentrated on or near its surface, and the fissioning process is similar to the peeling off of an onion's skin, then most of that original charge (and current) may end up on the offspring star that is constituted only of the skin of the original star. In this way the smaller, rather than the larger of the two members of the resulting binary pair, can be the hotter one. In any event, both stars will move to different positions in the HR diagram from where their parent was located.