PDA

View Full Version : Aliens? “Strong” Signal Detected From Sun-Like Star Being Verified By SETI



Fraser
2016-Aug-29, 09:20 PM
http://www.universetoday.com/wp-content/uploads/2016/08/ratan2_large.jpg
We’re not saying its aliens, but this could be the most enticing SETI-related signal from space since the famous “Wow! Signal” in 1977.
Over the weekend, interstellar expert Paul Gilster broke the news that "a strong signal” (http://www.centauri-dreams.org/?p=36248) was detected by Russian radio astronomers. This signal has attracted enough attention that two prominent SETI observatories are quickly making follow-up observations. The Allen Telescope Array in California has already been observing the star system and the Boquete Optical SETI Observatory in Panama will make an attempt this evening, if the weather is clear.
The signal was originally detected on May 15, 2015, by the Russian Academy of Science-operated RATAN-600 radio telescope in Zelenchukskaya, Russia, (https://www.sao.ru/) coming from the star HD 164595 just, located about 95 light years from Earth in the constellation Hercules.
Gilster wrote on his Centauri Dreams website (http://www.centauri-dreams.org/) that the researchers have worked out the strength of the signal and that if “it came from an isotropic beacon, it would be of a power possible only for a Kardashev Type II civilization,” which means a civilization capable of harnessing the energy of the entire star, and developing something like a Dyson sphere surrounding the star, and transfer all the energy to the planet.
If the beam was narrow and sent directly to our Solar System, the researchers say it would be of a power available to a Kardashev Type I civilization, a type of civilization more advanced than us that is able to harness the full amount of solar power it receives from its star.
Of course, like any other signal, such as the recent study of the dimming light curve of KIC 8462852 (Tabby’s Star) that is still being researched, (http://www.universetoday.com/130213/tabbys-star-megastructure-mystery-continues-intrigue/) it is possible the signal comes from other “natural” events such microlensing of a background source or even comets as been proposed for both Tabby’s Star or the Wow! Signal. But Gilster said “the signal is provocative enough that the RATAN-600 researchers are calling for permanent monitoring of this target.” You can see a graph of the signal on Centauri Dreams. (http://www.centauri-dreams.org/?p=36248)
What is most interesting is how similar this star is to our own Sun. HD 164595 just is a star just a tad smaller than our Sun (0.99 solar masses), with the exact same metallicity. The age of the star has been estimated at 6.3 billion years it is already known to have at least one planet, HD 164595 b, a Neptune-sized world that orbits the star every 40 days. And as we’ve seen with data from the Kepler spacecraft, with the detection of one planet comes the very high probability that more planets could orbit this star.
Why the Russian team has only made this detection public now is unclear and it may have only come out now because the team wrote a paper to be discussed at an upcoming SETI committee meeting during the 67th International Astronautical Congress in Guadalajara, Mexico, on Tuesday, September 27.
As Gilster wrote, “No one is claiming that this is the work of an extraterrestrial civilization, but it is certainly worth further study.”
It's a rare day when any type of signal is detected, and when one comes from a relatively nearby star system where a planet has already been found, and the signal also matches up with a predicted alien profile, yes, it certainly is worth further study.
Sources: Centauri Dreams (http://www.centauri-dreams.org/?p=36248), Alan Boyle on Geekwire (http://www.geekwire.com/2016/signal-seti-interest-hd164595/),
The post Aliens? “Strong” Signal Detected From Sun-Like Star Being Verified By SETI (http://www.universetoday.com/130515/aliens-strong-signal-detected-sun-like-star-verified-seti/) appeared first on Universe Today (http://www.universetoday.com).


More... (http://www.universetoday.com/130515/aliens-strong-signal-detected-sun-like-star-verified-seti/)

John Mendenhall
2016-Aug-30, 03:17 AM
Fraser, this reads like a fantasy.

KaiYeves
2016-Aug-30, 03:26 AM
Fraser, this reads like a fantasy.

What if this is the time it becomes reality? It could just as easily be nothing, but if it ever did happen for real, wouldn't we say that at the beginning as well?

John Mendenhall
2016-Aug-30, 01:49 PM
What if this is the time it becomes reality? It could just as easily be nothing, but if it ever did happen for real, wouldn't we say that at the beginning as well?

Of couse. And based on our experience to date, which is more likely to be true?

We are alone. Terribly, horribly alone.

Sleep tight.

Swift
2016-Aug-30, 02:06 PM
There is an active discussion of this topic in this thread (https://forum.cosmoquest.org/showthread.php?162243-An-interesting-SETI-candidate-in-Hercules&p=2367588#post2367588).