First detection of fast radio bursts outside Parkes Observatory

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yo2013
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Message 1511214 - Posted: 2 May 2014, 10:54:17 UTC
Last modified: 2 May 2014, 10:57:33 UTC

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.
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Message 1511216 - Posted: 2 May 2014, 11:28:08 UTC - in response to Message 1511214.  

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! :)
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yo2013
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Message 1511225 - Posted: 2 May 2014, 11:48:44 UTC - in response to Message 1511216.  

You're welcome :) I hope AP will study this burst and its region of the sky in more detail.
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Message 1511714 - Posted: 3 May 2014, 8:26:15 UTC - in response to Message 1511216.  

Thanks for a VERY interesting post! :)

+1 THX Yo :)
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Message 1511755 - Posted: 3 May 2014, 12:45:24 UTC

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.
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Josef W. Segur
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Message 1511892 - Posted: 3 May 2014, 19:29:04 UTC

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
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Message 1511932 - Posted: 3 May 2014, 21:44:38 UTC - in response to Message 1511892.  

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



Interesting, Thanks Yo, and Joe. :)

Please keep us up to date.
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yo2013
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Message 1516421 - Posted: 15 May 2014, 7:41:06 UTC - in response to Message 1511932.  

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Message 1516818 - Posted: 16 May 2014, 3:02:40 UTC - in response to Message 1516421.  

Thanks for the link Yo. These FBRs are definitely mysterious events, hopefully SETI can add some data that will help us understand whats happening.
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Message 1517108 - Posted: 16 May 2014, 18:36:34 UTC - in response to Message 1516818.  

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
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Message 1517208 - Posted: 16 May 2014, 21:21:10 UTC - in response to Message 1517108.  

It's a pity that S@H scientists don't comment about this.
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Message 1517213 - Posted: 16 May 2014, 21:31:03 UTC - in response to Message 1517208.  

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.
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Message 1518161 - Posted: 19 May 2014, 12:13:31 UTC - in response to Message 1517208.  

It's a pity that S@H scientists don't comment about this.


They have other fish to fry that is:)
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Message 1518183 - Posted: 19 May 2014, 13:40:24 UTC

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 ??
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Message 1518268 - Posted: 19 May 2014, 17:08:40 UTC

Why hasn't the signal been recorded and examined for any intelligence.


Probably has something to do with fundings...
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Message 1518498 - Posted: 20 May 2014, 0:37:15 UTC - in response to Message 1518183.  

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 ??

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
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Message 1518508 - Posted: 20 May 2014, 1:03:17 UTC - in response to Message 1518498.  

Thank you Joe.

You explanation is very helpful in understanding what is going on.
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Message 1518515 - Posted: 20 May 2014, 1:13:14 UTC - in response to Message 1518508.  

Thank you Joe.

You explanation is very helpful in understanding what is going on.


+1 :)
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Message 1518522 - Posted: 20 May 2014, 1:17:17 UTC - in response to Message 1518515.  

Thank you Joe.

You explanation is very helpful in understanding what is going on.


+1 :)



+2 :)
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Message 1528208 - Posted: 15 Jun 2014, 8:57:23 UTC - in response to Message 1511714.  

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
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Message boards : SETI@home Science : First detection of fast radio bursts outside Parkes Observatory


 
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