Aliens Building a Dyson Sphere? Where's the Flux?

4 years 5 days ago - 4 years 5 days ago #105016 by albertw
www.smh.com.au/technology/sci-tech/astro...20151014-gk9iwj.html

Kepler has found a star that has up to 20% of its light occasionally blocked. And it doesn't fit the usual pattern of a planet blocking the light.

The paper detailing the findings (complete with lightcurves) is at arxiv.org/abs/1509.03622 . The authors go through possible causes for the lightcurves and suggested that a possible explanation is the passage of a family of exocomet fragments.

Another paper yesterday however looks beyond possible natural phenomena arxiv.org/abs/1510.04606 . In this paper the authors speculate about other causes for the light curves. They give a good summary of what we'd expect from natural phenomena and what we'd expect from an artificial massive constructs. And while they note the need to be careful to not fall into an 'aliens in the gaps' fallacy, they conclude that this would make a good SETI target.

KIC 8462852 shows transit signatures consistent with a swarm of artificial objects, and we strongly encourage intense SETI efforts on it, in addition to conventional astronomical efforts to find more such objects (since, if it is natural, it is both very interesting in its own right and unlikely to be unique). Since the Kepler data archive presumably contains many poorly studied stars that may exhibit these signatures, the alien megastructure rate remains poorly constrained.


IMO this is up there with the 'Wow!' and 'LGM-1' signals. Guess I'll need to add a slide or two about aliens to my (well, Dr. Mullays!) Kepler talk now!

Cheers,
~Al

Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/
The following user(s) said Thank You: Mike, RandomPillars

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4 years 3 days ago #105032 by RandomPillars
Replied by RandomPillars on topic Aliens Building a Dyson Sphere? Where's the Flux?
Just read through it. Very interesting. Thanks for the link Al

Sean

"... quit trying to upset and disturb Dr. Venkman..."

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4 years 3 days ago - 4 years 3 days ago #105033 by dave_lillis
Replied by dave_lillis on topic Aliens Building a Dyson Sphere? Where's the Flux?
A major problem with any serious seti search is "where do you search"?.
Well, now they have a target.

Dave L. on facebook , See my images in flickr
IFAS Rep. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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4 years 2 days ago #105039 by stevie
If there was a load of comets flying about, and you wanted to vacuum them up, what could be better than a Dyson?

stevie

Secretary NIAAS
The following user(s) said Thank You: michael_murphy

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3 years 11 months ago #105045 by albertw
Hi,

There's an AAVSO alert out now to hopefully keep tabs on whatever is going on with this star.

www.aavso.org/aavso-alert-notice-532

Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/
The following user(s) said Thank You: johnomahony, Mike

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