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Strange Stars Pulse To the Golden Mean

An anonymous reader sends this excerpt from an article at Quanta Magazine: What struck John Learned about the blinking of KIC 5520878, a bluish-white star 16,000 light-years away, was how artificial it seemed. Learned, a neutrino physicist at the University of Hawaii, Mnoa, has a pet theory that super-advanced alien civilizations might send messages by tickling stars with neutrino beams, eliciting Morse code-like pulses. "It's the sort of thing tenured senior professors can get away with," he said. The pulsations of KIC 5520878, recorded recently by NASA's Kepler telescope, suggested that the star might be so employed.

A "variable" star, KIC 5520878 brightens and dims in a six-hour cycle, seesawing between cool-and-clear and hot-and-opaque. Overlaying this rhythm is a second, subtler variation of unknown origin; this frequency interplays with the first to make some of the star's pulses brighter than others. In the fluctuations, Learned had identified interesting and, he thought, possibly intelligent sequences, such as prime numbers (which have been floated as a conceivable basis of extraterrestrial communication). He then found hints that the star's pulses were chaotic. But when Learned mentioned his investigations to a colleague, William Ditto, last summer, Ditto was struck by the ratio of the two frequencies driving the star's pulsations. "I said, 'Wait a minute, that's the golden mean.'"

5 of 157 comments (clear)

  1. Re:Ok That's Pretty Freaky by DigiShaman · · Score: 4, Informative

    Pi (film), 1998

    https://www.youtube.com/watch?...

    Yeah, I'm a fan of Darren Aronofsky

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  2. Re:Ok That's Pretty Freaky by iluvcapra · · Score: 3, Informative

    The difference between Pi and the golden ratio is that the golden ratio isn't transcendental, it's just irrational. In fact, you can state Phi perfectly as (1 + sqrt(5)) / 2.

    Yeah, I'm a fan of Darren Aronofsky

    He should pay his PAs better.

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    Don't blame me, I voted for Baltar.
  3. Neither do I... by robbak · · Score: 4, Informative

    Golden ratios emerge wherever you have a relationship of T(n)=T(n-1) + T(n-2). Where the first two terms are 0 and 1, you have fibonacci numbers: but no matter what your starting numbers are, the ratio between T(n) and T(n-1) will approach phi (as demonstrated with 'brady numbers').

    So it is not at all surprising that phi might crop up in seemingly strange places.

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  4. Re:Wild guess, 5 stars by wonkey_monkey · · Score: 4, Informative

    As the next paragraph from the article would have explained, had it not been arbitrarily excluded from the copy-paste summary.

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  5. Contact! by aglider · · Score: 3, Informative

    An already seen movie
    Besides that, I just noticed that it's a 6+ years old article.

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