On Mar 12, 3:34*am, Brad Guth wrote:
On Mar 11, 6:00*pm, Double-A wrote:



"Chandra data (above, graph) from observations of RX J0806.3+1527 (or
J0806), show that its X-ray intensity varies with a period of 321.5
seconds. This implies that J0806 is a binary star system where two
white dwarf stars are orbiting each other (above, illustration)
approximately every 5 minutes.

The short orbital period implies that the stars are only about 50,000
miles apart, a fifth of the distance from the Earth to the Moon, and
are moving in excess of a million miles per hour. According to
Einstein's General Theory of Relativity, such a system should produce
gravitational waves -ripples in space-time - that carry energy away
from the system at the speed of light.

Energy loss by gravitational waves will cause the stars to move closer
together. X-ray and optical observations indicate that the orbital
period of this system is decreasing by 1.2 milliseconds every year,
which means that the stars are moving closer together at a rate of
about 2 feet per day."

http://chandra.harvard.edu/photo/2005/j0806/

http://i.ytimg.com/vi/ryqN6dyUmJg/0.jpg

"With its extremely short orbital period, RX J0806.3+1527 is also a
prime candidate for the detection of the elusive gravitational waves ,
predicted by Einstein's General Theory of Relativity. They have never
been measured directly, but their existence has been revealed
indirectly in binary neutron star systems.

A planned gravitational wave space experiment, the European Space
Agency's Laser Interferometer Space Antenna (LISA) that will be
launched in about 10 years' time, will be sufficiently sensitive to be
able to reveal this radiation from RX J0806.3+1527 with a high degree
of confidence. Such an observational feat would open an entirely new
window on the universe."

http://www.eso.org/public/news/eso0211/

Double-A

Binary dwarfs as supposedly tidal face-locked and separated by just
80,000 km and worth .37 solar mass each.

At some point in the near future (perhaps a few thousands years from
now), their ever increasing orbital frequency and the combined
magnetic force has to take over and draw these two similar white
dwarfs together, unless it’s running like a magnetic bearing that’s
perpetually isolating one another regardless of those substantial
gravitational forces (5.7e33 N). *Electrons repulse one another, which
should also help prolong their binary status. *At only 80,000 km
separation, whereas being near equal mass is pretty much required, and
otherwise I agree with the final outcome being a neutron star unless
the merger goes into a hyper/superluminal explosion where everything
gets expelled.

It’s actually more likely that Sirius(B) gets to become a neutron star
about the same time as the human species goes extinct here on Earth.

Supposedly Sirius B that’s roughly as massive as sol, roughly the size
of Earth and spins at 23 rpm, should be making its magnetic field a
whole lot easier to measure, however no such public archived
measurement or even good swag seems to exist. It has been suggested;
at least 10% of white dwarfs have 1e6 gauss/m2 to work with, and
Sirius(B) is likely one of the more robust dwarfs that should easily
exceed that base amount of compacted stellar magnetic intensity and
possibly offer 1e9 gauss, thus making it easier to rebuild mass by
collecting whatever nearby passing stuff and of course pulling
hydrogen away from those terrific Sirius(A) CMEs and otherwise sucking
up those regular protons and electrons from the Sirius(A) solar wind
should get picked up and held by Sirius(B).

~ BG