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FRB 121102 Intense Burst of 15 Weird Signals
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Carlos Send message Joined: 9 Jun 99 Posts: 30684 Credit: 57,275,487 RAC: 157 |
Just reported in Science Alert: "Bursts from this source have never been seen at this high a frequency," said Andrew Siemion, director of Breakthrough Listen, an initiative based the University of California, Berkeley, which detected the signals." Was this Seti@Home related? |
Michael Watson Send message Joined: 7 Feb 08 Posts: 1387 Credit: 2,098,506 RAC: 5 |
I see that the SETI Institute is using the Allen Telescope Array to look at FRB 121102, also. They are doing so, as I type this. This confirms that at least two independent SETI projects are working under the hypothesis that these fast radio bursts could have an intelligent cause. The odds of this being the case are apparently considered good enough to justify the effort. |
janneseti Send message Joined: 14 Oct 09 Posts: 14106 Credit: 655,366 RAC: 0 |
Just reported in Science Alert: "Bursts from this source have never been seen at this high a frequency," said Andrew Siemion, director of Breakthrough Listen, an initiative based the University of California, Berkeley, which detected the signals." You can find Andrew Siemion involved in the Seti@Home project anyway. https://setiathome.berkeley.edu/sah_about.php |
Carlos Send message Joined: 9 Jun 99 Posts: 30684 Credit: 57,275,487 RAC: 157 |
Just reported in Science Alert: "Bursts from this source have never been seen at this high a frequency," said Andrew Siemion, director of Breakthrough Listen, an initiative based the University of California, Berkeley, which detected the signals." Yes I read his paper before. I know the name but I don't think Eric ever introduced us. It looks like a Harvard Grad student has been looking at these for over a year now. Law, Casey, 2016, "The Sound of Fast Radio Burst FRB 121102", doi:10.7910/DVN/QSWJE6, Harvard Dataverse, V1 |
Mr. Kevvy Send message Joined: 15 May 99 Posts: 3806 Credit: 1,114,826,392 RAC: 3,319 |
Breakthrough Initiatives release Breakthrough Listen Detects Repeating Fast Radio Bursts from the Distant Universe.... Has also been picked up by several newspapers. But of course, only time will tell if it amounts to anything (at least that this project is looking for.) |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
Was the signal itself recorded; or only it's amplitude? If it were recorded then what is it's content--any modulation ? Why is there always a lack of specificity in these "WOW" type signals ? |
rob smith Send message Joined: 7 Mar 03 Posts: 22535 Credit: 416,307,556 RAC: 380 |
The more FRBs detected the more I think that the "WOW" signal was a non-repeating FRB. Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
Mr. Kevvy Send message Joined: 15 May 99 Posts: 3806 Credit: 1,114,826,392 RAC: 3,319 |
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William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
Because William it is 99.999% likely that they are of natural origin. Yes that's probably true but I would like to see a report such as: " that a burst of transmitted "signal" was observed and upon examining it for content was found to contain no modulation or other information to indicate other than a natural phenomenon of unknown origin. Scientists and astronomers are uncertain as to what kind of cosmic events could account for this type of Burst transmission. Bla Bla Bla " |
Michael Watson Send message Joined: 7 Feb 08 Posts: 1387 Credit: 2,098,506 RAC: 5 |
The linked Science Alert article reports that 400 Terabytes of data were collected, so everything that could be recorded about this phenomenon , very likely was. One imagines it could take some time to analyze this amount of data. The article also notes that a paper by Siemion , et al, is forthcoming, the reviews of which could be expected to take some additional time, before it is published. |
Sirius B Send message Joined: 26 Dec 00 Posts: 24912 Credit: 3,081,182 RAC: 7 |
+1 All it will take is one thinking outside the box & coming up with solutions to many of today's scientific problems. How many Scientists & Academics over the past couple of centuries been ridiculed only to be proven right? Too many people today have closed minds & too set in their ways to accept anything outside of their "little" box. |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
The Square Kilometer Array when 10% completed will produce 300 PB of data/year, 50% more that the seven years of LHC processing. The SKA director has already signed an agreement with CERN to be able to process its data on the CERN Grid, which extends to many countries. Tullio |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
Yet he refused quantum mechanics, probably for theological reasons. God does nor play dice, he said. His God was not the God of the Bible, but the God of Spinoza, the Great Architect of the Universe. Tullio |
kittyman Send message Joined: 9 Jul 00 Posts: 51478 Credit: 1,018,363,574 RAC: 1,004 |
I attribute all of Einstein's accomplishments to his cat, Tiger. "Time is simply the mechanism that keeps everything from happening all at once." |
Sirius B Send message Joined: 26 Dec 00 Posts: 24912 Credit: 3,081,182 RAC: 7 |
Albert Einstein didn't so much think outside the box as just being far ahead of his time in scientific thinking. There is a subtle difference which not all can see. Leonardo da Vinci (1452 - 1519) was another one.Agree totally, but as I stated some scientists & Academics received no public funding or recognition. Some did so only after their deaths. One of the best that I studied for the theory side of Metalwork in school (selected the Space Race) was Robert H Goddard, now recognised as the one who ushered in the Space Race. |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
I have personally known two Italian scientists who had amply deserved a Nobel Prize but did not get one, Giuseppe "Beppo" Occhialini, an experimenter, and Tullio Regge, a theorist. Tullio |
Michael Watson Send message Joined: 7 Feb 08 Posts: 1387 Credit: 2,098,506 RAC: 5 |
The favorite explanation for Fast Radio Bursts seems to be magnetars, super-magnetized versions of ordinary pulsars. Like pulsars, these spin rapidly, with periods of around 1 to 10 seconds. Breakthrough Listen reportedly observed the star for about 5 hours. They heard, we're told, 15 pulses in that time. Since there are 1800 ten second periods in five hours, are we justified in wondering what became of the other 1785 pulses? Perhaps that question is part of the reason why at least two independent SETI projects are taking an interest in this FRB. |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
Maybe their spin axis is not aligned with the magnetic axis, so there is a wobble and the radio emission is not always in our line of sight. This is an attempt to explain things. Tullio |
Michael Watson Send message Joined: 7 Feb 08 Posts: 1387 Credit: 2,098,506 RAC: 5 |
Perhaps that's what's happening. I was struck, though, by the observation that more pulses were seen in a much shorter period of time, than in the past. 14 of the latest ones were apparently spread over a period of only around 70 milliseconds. An additional one was apparently seen somewhere within the 5 hour observation window. Unless precession carried the beam away from our view after 70 milliseconds, and brought it back again within 5 hours, it's difficult to see what became of the pulses within that gap. If the precession rate really were less than five hours, it seems that this fact would have become clear before now. |
Jon Golding Send message Joined: 20 Apr 00 Posts: 105 Credit: 841,861 RAC: 0 |
Perhaps clumps of material are falling onto the magnetar and generating the bursts, or some other chaotic process that gives irregular bursts of activity? If it was instead an ETI beacon, you might expect it to have a more regular output. |
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