A 2.9 hr Periodic Radio Transient with an Optical Counterpart:
https://iopscience.iop.org/article/10.3847/2041-8213/ad890e
No good movies and music yet...(decoded that is)
But at least technical details such as frequency etc..
Some very peculiar.
On 27/11/2024 6:58 pm, Jan Panteltje wrote:
A 2.9 hr Periodic Radio Transient with an Optical Counterpart:
https://iopscience.iop.org/article/10.3847/2041-8213/ad890e
No good movies and music yet...(decoded that is)
But at least technical details such as frequency etc..
Some very peculiar.
A close-orbiting pair of white dwarf stars could be doing lots of
peculiar stuff, without any help from aliens.
On 27/11/2024 6:58 pm, Jan Panteltje wrote:
A 2.9 hr Periodic Radio Transient with an Optical Counterpart:
https://iopscience.iop.org/article/10.3847/2041-8213/ad890e
No good movies and music yet...(decoded that is)
But at least technical details such as frequency etc..
Some very peculiar.
A close-orbiting pair of white dwarf stars could be doing lots of
peculiar stuff, without any help from aliens.
Bill Sloman <bill.sloman@ieee.org> wrote:
On 27/11/2024 6:58 pm, Jan Panteltje wrote:
A 2.9 hr Periodic Radio Transient with an Optical Counterpart:
https://iopscience.iop.org/article/10.3847/2041-8213/ad890e
No good movies and music yet...(decoded that is)
But at least technical details such as frequency etc..
Some very peculiar.
A close-orbiting pair of white dwarf stars could be doing lots of
peculiar stuff, without any help from aliens.
Would a cluster of three or more be stable? If so:
Dit-dit-dit dah
Dit-dit-dit dah
Dit-dit-dit dah
or even:
dah-dit-dah-dit dah-dah-dit-dah
A 2.9 hr Periodic Radio Transient with an Optical Counterpart:
https://iopscience.iop.org/article/10.3847/2041-8213/ad890e
No good movies and music yet...(decoded that is)
But at least technical details such as frequency etc..
Some very peculiar.
On 27/11/2024 12:54, Liz Tuddenham wrote:
Bill Sloman <bill.sloman@ieee.org> wrote:
On 27/11/2024 6:58 pm, Jan Panteltje wrote:
A 2.9 hr Periodic Radio Transient with an Optical Counterpart:
https://iopscience.iop.org/article/10.3847/2041-8213/ad890e
No good movies and music yet...(decoded that is)
But at least technical details such as frequency etc..
Some very peculiar.
A close-orbiting pair of white dwarf stars could be doing lots of
peculiar stuff, without any help from aliens.
Would a cluster of three or more be stable? If so:
Dit-dit-dit dah
Dit-dit-dit dah
Dit-dit-dit dah
or even:
dah-dit-dah-dit dah-dah-dit-dah
3 body problem remains unsolved and probably insoluble analytically
apart from a special case of fairly massive stars in mutual orbit and a
small mass at one of the two stable L4, L5 Lagrange points like the
Trojan asteroids locked in equilateral triangles with Jupiter and the sun.
https://en.wikipedia.org/wiki/Lagrange_point#Stability
Ultimately in the very long term it is thought that for three (or more) bodies in general three of them will get close enough together at some
point that the smallest one gets expelled and the others will end up
more tightly bound together. Ovenden's conjecture also AFAIK still
unproven is that the gravitational dynamics will perturb their orbits in
such a way as to put off the evil day for as long as possible.
I can't find anything suitable online but it seemed like a very
reasonable way to explain Bode's law from first principles and the same locked resonance patterns seen in other planetary moons. This is the
closest I've been able to dig up. Ovenden's conjecture gets and
honourable mention in A.E. Roy's 1970's book "Orbital Motion".
This comes closest:
https://academic.oup.com/mnras/article/115/3/296/2603818
Martin Brown <'''newspam'''@nonad.co.uk> wrote:
Ultimately in the very long term it is thought that for three (or more)
bodies in general three of them will get close enough together at some
point that the smallest one gets expelled and the others will end up
more tightly bound together. Ovenden's conjecture also AFAIK still
unproven is that the gravitational dynamics will perturb their orbits in
such a way as to put off the evil day for as long as possible.
I can't find anything suitable online but it seemed like a very
reasonable way to explain Bode's law from first principles and the same
locked resonance patterns seen in other planetary moons. This is the
closest I've been able to dig up. Ovenden's conjecture gets and
honourable mention in A.E. Roy's 1970's book "Orbital Motion".
This comes closest:
https://academic.oup.com/mnras/article/115/3/296/2603818
Michael Ovenden was my celestial mechanics and galactic dynamics prof at
UBC. A great guy, whose hobby was teaching New Age workshops at Cold
Mountain Institute. (An odd name for a small barge floating in the harbor, but I digress.)
Died pretty young, unfortunately.
On 27/11/2024 15:25, Phil Hobbs wrote:
Martin Brown <'''newspam'''@nonad.co.uk> wrote:
Ultimately in the very long term it is thought that for three (or more)
bodies in general three of them will get close enough together at some
point that the smallest one gets expelled and the others will end up
more tightly bound together. Ovenden's conjecture also AFAIK still
unproven is that the gravitational dynamics will perturb their orbits in >>> such a way as to put off the evil day for as long as possible.
I can't find anything suitable online but it seemed like a very
reasonable way to explain Bode's law from first principles and the same
locked resonance patterns seen in other planetary moons. This is the
closest I've been able to dig up. Ovenden's conjecture gets and
honourable mention in A.E. Roy's 1970's book "Orbital Motion".
This comes closest:
https://academic.oup.com/mnras/article/115/3/296/2603818
Michael Ovenden was my celestial mechanics and galactic dynamics prof at
UBC. A great guy, whose hobby was teaching New Age workshops at Cold
Mountain Institute. (An odd name for a small barge floating in the harbor, >> but I digress.)
Died pretty young, unfortunately.
Yes before retirement - it was a shame. Do you remember the title of his paper making this conjecture that I am struggling to recall? I'm
guessing it had a more anodyne name at the time of publication with
Ovenden's conjecture what A.E. Roy called it later in his 1970's book.
We had Donald Lynden Bell and Martin Rees for astrophysics.
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