Message boards :
SETI@home Science :
First detection of fast radio bursts outside Parkes Observatory
Message board moderation
Author | Message |
---|---|
yo2013 Send message Joined: 9 Mar 14 Posts: 173 Credit: 50,837 RAC: 0 |
Until now, fast radio bursts (FRB) were only observed by Parkes Observatory in Australia. These are the kind of radio signals Astropulse is searching for. Last month, astronomers at Arecibo Observatory reported the observation of a FRB with Arecibo Radiotelescope. |
anniet Send message Joined: 2 Feb 14 Posts: 7105 Credit: 1,577,368 RAC: 75 |
Until now, fast radio bursts (FRB) were only observed by Parkes Observatory in Australia. These are the kind of radio signals Astropulse is searching for. Last month, astronomers at Arecibo Observatory reported the observation of a FRB with Arecibo Radiotelescope. Yo! You're a star! Thanks for a VERY interesting post! :) |
yo2013 Send message Joined: 9 Mar 14 Posts: 173 Credit: 50,837 RAC: 0 |
You're welcome :) I hope AP will study this burst and its region of the sky in more detail. |
Thomas Send message Joined: 9 Dec 11 Posts: 1499 Credit: 1,345,576 RAC: 0 |
Thanks for a VERY interesting post! :) +1 THX Yo :) |
Bob DeWoody Send message Joined: 9 May 10 Posts: 3387 Credit: 4,182,900 RAC: 10 |
I read it to be a means of investigating natural phenomena in the intergalactic medium and not necessarily anything associated with being an intelligent signal. Bob DeWoody My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events. |
Josef W. Segur Send message Joined: 30 Oct 99 Posts: 4504 Credit: 1,414,761 RAC: 0 |
The SETI data distribution history for 2013 shows that a couple of tape files recorded 2 November 2012 have been split and processed. If one of those files included the 06:35:53 UTC time of that 3 millisecond single pulse, it may already be in the science databases here. I guess with a SNR of 14 that Astropulse processing for each polarity of beam 4 ought to have caught it. SETI@home v7 or Enhanced perhaps could have seen it as a Spike, too. Joe |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
The SETI data distribution history for 2013 shows that a couple of tape files recorded 2 November 2012 have been split and processed. If one of those files included the 06:35:53 UTC time of that 3 millisecond single pulse, it may already be in the science databases here. Interesting, Thanks Yo, and Joe. :) Please keep us up to date. |
yo2013 Send message Joined: 9 Mar 14 Posts: 173 Credit: 50,837 RAC: 0 |
|
Andrew Sanchez Send message Joined: 10 Apr 14 Posts: 69 Credit: 471,907 RAC: 0 |
Thanks for the link Yo. These FBRs are definitely mysterious events, hopefully SETI can add some data that will help us understand whats happening. |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
Article has to do with radio bursts..have a look. Are these mystery radio bursts messages from ALIENS? Freak frequency from outside the Milky Way baffles astronomers Scientists are trying to work out what is causing Fast Radio Bursts (FRBs) The strange signals occur for a few milliseconds and come from nowhere The first was detected in 2007, but only a handful have been seen since In April the latest discovery was made, but still the mystery persists Explanations range from colliding neutron stars to alien signals http://www.dailymail.co.uk/sciencetech/article-2630615/Are-mystery-radio-bursts-messages-ALIENS-Freak-frequency-outside-Milky-Way-baffles-astronomers.html |
yo2013 Send message Joined: 9 Mar 14 Posts: 173 Credit: 50,837 RAC: 0 |
It's a pity that S@H scientists don't comment about this. |
Batter Up Send message Joined: 5 May 99 Posts: 1946 Credit: 24,860,347 RAC: 0 |
It's a pity that S@H scientists don't comment about this. We are lucky to get what we get from them. This project is practically a hobby, only a small part of the now bigger BOINC. Don't dig too deeply into how S@H actually works you will be disappointed. |
Julie Send message Joined: 28 Oct 09 Posts: 34041 Credit: 18,883,157 RAC: 18 |
|
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
Are these mystery radio bursts messages from ALIENS? What makes my head hurt is: Why hasn't the signal been recorded and examined for any intelligence. Is it just a carrier with no modulation ?? What is the nature of these bursts, what is the frequency etc ?? |
Julie Send message Joined: 28 Oct 09 Posts: 34041 Credit: 18,883,157 RAC: 18 |
|
Josef W. Segur Send message Joined: 30 Oct 99 Posts: 4504 Credit: 1,414,761 RAC: 0 |
Are these mystery radio bursts messages from ALIENS? Recording enough detail to look for details within a single pulse of 3 millisecond duration takes a lot of data storage. While the S@H multibeam recorder gets around 7500 samples from each beam in that period, those are at minimal resolution for amplitude and phase. The recording is 32 bits at a 2.5 MHz. rate, or nominally 10 MegaBytes per second. The PALFA recordings from the MOCK Spectrometers have more resolution, but a slower sampling rate giving samples at 65.476 microsecond period (see http://arxiv.org/pdf/1210.8003v1). That means they have about 46 samples for a 3 millisecond pulse. They deal with the full Arecibo ALFA array bandwidth of more than 300 MHz., so are recording much more data than S@H. Although the ALFA receiver system is typically only in use a fraction of each day, there's a lot of data stored. Analysis to even find possibly interesting basic signals takes massive computing power. Given enough funding, it would of course be possible to record and analyze far more data... I'm sure that the raw recorded data for FRBs has been examined, but there is probably not enough detail to make any sensible estimation whether there's any pattern within the burst time. A layperson might want to make a guess, but a scientist wants enough data to satisfy statistical significance measures. Joe |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
Thank you Joe. You explanation is very helpful in understanding what is going on. |
anniet Send message Joined: 2 Feb 14 Posts: 7105 Credit: 1,577,368 RAC: 75 |
Thank you Joe. +1 :) |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
Thank you Joe. +2 :) |
ecco dolphin serendip Send message Joined: 30 Dec 12 Posts: 6 Credit: 32,788 RAC: 1 |
Bonjour je suis participant de seti je me demandais car j'ai entendu parlé du télescope Parkes en Australie,est t'il utilisé pour le projet seti@home?S'il vous plais comment est t'il possible de capter les signaux de Parkes alors que mon ordinateur reçoit déja les signaux d'Arecibo sur l'île de Puerto Rico? Quel sont les autres observatoires qui aide pour la recherche Seti extraterrestre dans le monde? merci |
©2024 University of California
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.