Posts by Jon Golding


log in
1) Message boards : News : Friday March 21 SETI talks to be webcast live. (Message 1495007)
Posted 121 days ago by Profile Jon Golding
@Eric. This is a big ask, I know, but how about making a slidecast of the talk you wanted to give, e.g. for a full 45 mins, and posting it on the SETI website (and YouTube)? Not only would it give everyone an update on what's happening in the various SETI searches, it would form a focus for discussion. Several of the people running SETI@Home are computing/signal processing experts and the discussions could lead to breakthrough ideas to improve the sensitivity or efficiency of searches.
2) Message boards : News : Friday March 21 SETI talks to be webcast live. (Message 1493693)
Posted 123 days ago by Profile Jon Golding
The Astropulse data that Eric described in his talk are very interesting. Several hundred short burst signals have been detected, all within the galactic plane, and several of which were seen on more than one occasion (although not repeated in a one-off dedicated search). At the very least, these could be new astronomical objects, and at best they might be SETI communications. Could a grant be written to get funding to study these objects in greater detail? - with some of the funds being used for hardware, or a programmer, that could benefit SETI?

This was the first time I'd seen these data presented and it would be great to hear a little more about this from Eric sometime - perhaps a short summary post in one of these threads?
3) Message boards : SETI@home Science : Let's see some results! (Message 1475811)
Posted 162 days ago by Profile Jon Golding
Somewhere near the beginning of this thread, a suggestion was made to start a funding drive to get a dedicated programmer to work on the Nitpicker. Most universities will provide matched funding for specific projects, so SETIzens might only have to come up with half the funding. This programming work could likely be done either by a good PhD student within 3 years, or by an excellent post-doc or specialist programmer on a 1 year contract.
It would first be essential to have an update from the staff on the status of the Nitpicker and their ideas on how to get it running again, and whether a dedicated programmer is what's required, or if they have all of that in-hand.
4) Message boards : News : What's new about SETI@home v7 (Message 1380836)
Posted 405 days ago by Profile Jon Golding
Just noticed on the server status page that there's a new server "Khan" lined up to run the ntpckr and rfi tasks. Any information about this (new?) machine?
5) Message boards : News : Green Bank Telescope observations to start Saturday. (Message 1106581)
Posted 1165 days ago by Profile Jon Golding
The link at the bottom of that news item http://seti.berkeley.edu/seti_at_the_gbt says that they will be using this equipment in future to piggy back on the Green Bank telescope
6) Message boards : News : Green Bank Telescope observations to start Saturday. (Message 1106449)
Posted 1165 days ago by Profile Jon Golding
I just hope that none of these planets were behind their star at the time the observations were made. I guess that was one of the factors taken into account during the candidate selection process.
7) Message boards : News : Green Bank Telescope observations to start Saturday. (Message 1104382)
Posted 1172 days ago by Profile Jon Golding
After the Kepler data are recorded, will we continue to piggy back and record data on the Green Bank telescope? Or is this a one-off?
8) Message boards : Near Time Persistency Checker : Please Read First! (Message 1101646)
Posted 1182 days ago by Profile Jon Golding
Oh. Well that was short-lived. Seems like we've reverted back to just 10 candidates now.
9) Message boards : Near Time Persistency Checker : Please Read First! (Message 1101360)
Posted 1182 days ago by Profile Jon Golding
Many thanks (to Matt, I guess) for publishing the Top 50 candidates.
These all seem to be from the same part of the sky. I'm guessing that we'll be called on to do some manual RFI detection on these plots?
10) Message boards : Near Time Persistency Checker : Candidate: 20581835 (RA: 22.895508 Dec: 16.432024) (Message 1098729)
Posted 1192 days ago by Profile Jon Golding
All of the current top 10 candidates appear to be RFI.
Look at the spike data: each one has a consistent 1.4188GHz line that has been locked onto as the suggested signal. There's a similar line on the opposite side of the waterfall plot, so these are likely side bands around the main central RFI. These lines are persistently present and don't show any Doppler shift.
Could all of the current spike candidates be manually removed from the top 10, so we can see the (potentially) more interesting candidates that are further down the list?
11) Message boards : Near Time Persistency Checker : Candidate: 20581835 (RA: 22.895508 Dec: 16.432024) (Message 1088398)
Posted 1222 days ago by Profile Jon Golding
Also, the ids suggest that all the data was acquired at about the same time...

Agreed. I've only checked a few of them, but the date comes out as during July 2008. Perhaps a dedicated study of objects near Pegasus was carried out during that time and this happened to coincide with a lot of 'noise' from somewhere? Nearby radar testing?
Alternatively, we've just discovered where ET hangs out.
12) Message boards : Near Time Persistency Checker : Please Read First! (Message 1086084)
Posted 1230 days ago by Profile Jon Golding
Now that the NTPCKr is running again, any estimate as to when we'll see some updated candidate stats?
13) Message boards : Near Time Persistency Checker : Please Read First! (Message 1042735)
Posted 1376 days ago by Profile Jon Golding
Great to see that the public face of the NtPCKr is back in action (as of Oct 13), complete with data, statistics, and much-improved waterfall plots. Things are looking up!

Many thanks to all involved, especially considering all the other fire-fighting you have to do at the moment.
14) Message boards : News : "Are We Alone?" The Great Debate (Message 1027704)
Posted 1430 days ago by Profile Jon Golding
The recent BBC article and interview with Seth Shostak is interesting because, among other things, it questions whether we're looking for the right kind of signal. Any civilisation following a similar technological path to our own will only be detectable by our radio telescopes for a limited period whilst they're using high-power omnidirectional radio to communicate around their planet. If they follow our path, then within 100 years they will switch to using lower-energy more efficient point-to-point communications, or they'll use fibre-optic. If true, that greatly lowers the odds of finding them by using a radio telescope.
15) Message boards : Technical News : June Update (Jun 02 2010) (Message 1000593)
Posted 1510 days ago by Profile Jon Golding
Jeff has been hammering on the NTPCkr to incorporate the newer RFI removal code. Before the plumbing was of the form: signals come in, pixels are scored, the best ones are displayed for the public to see. Now the plumbing is: signals come in, pixels are scored, the best ones are displayed in a sort of "preview" form and sent into the RFI loop, which then forces the pixels to be rescored (after bad signals are removed), and if they still happen to be in the top ten they'll have all the associated plots for the public to analyze.


So, is the RFI removal script now running constantly in the background, or does this script only get implemented every day or so?
16) Message boards : Near Time Persistency Checker : Please Read First! (Message 997305)
Posted 1526 days ago by Profile Jon Golding
Yeah! Looks like the NTPCKr is running again.
8 new candidates, although we don't yet have access to the full WU details.
Well done everyone at Berkeley.
17) Message boards : Technical News : Back in Town (Dec 07 2009) (Message 953460)
Posted 1687 days ago by Profile Jon Golding
Cheers for the update Matt. With all this work at hand I reckon you were bursting to get out of there for a bit. You're human just like all of us and deserve some kind of a breather.

-- Tom :-)


wait.... Matt is a human? awww.... I thought he was some sort of really advanded A.I.


Didn't you realise? - Matt is the E.T.I. we've been searching for all these years.
Talk about hiding in plain sight![/b]
18) Message boards : Technical News : Back and Forth (Oct 28 2009) (Message 943698)
Posted 1728 days ago by Profile Jon Golding
I was kind of hoping other radio telescopes had similar blanking woes thus we could get welcome invitations to meaningfully sized sites (ie: Russia's Ratan-600 or the under-construction Chinese FAST).

Especially nice if these telescopes can see parts of the sky that Aricebo can't, and the scientists involved reciprocated by agreeing to ship some of their blanked data to Berkeley for splitting into WUs (for appropriately modified client apps).
19) Message boards : Near Time Persistency Checker : Candidate: 920891 (RA: 2.645508 Dec: 26.547533) (Message 941056)
Posted 1740 days ago by Profile Jon Golding
Hi Tiaan
Humans can already achieve Terawatt power transmissions. Several research lasers since the 1970s can produce pulses in the TW power range; the most powerful being at the National Ignition Facility (about 700TW). The point is, would we want to use all that resource to beam a signal out into space at a planet where we don't even know if there's anyone advanced enough to receive it?
My only point here is, why bother transmitting signals at any power more than you really need to? If ET thinks the same way, then we're only going to pick up a signal deliberately sent at us (of which there may be many) and we're currently going to miss all of those 'business as usual' civilisations that are only using sufficient power to send signals around their home world.
20) Message boards : Near Time Persistency Checker : Candidate: 920891 (RA: 2.645508 Dec: 26.547533) (Message 941050)
Posted 1740 days ago by Profile Jon Golding
Agreed!
One popular idea out there on the message boards is that SETI will pick up signals from a civilisation just going about its normal business - we'll be eavesdropping on their TV, radio, or radar.

However, using our own TV/Radio/radar transmissions as a guide (see http://www.faqs.org/faqs/astronomy/faq/part6/section-12.html), human transmissions could not be detected with an Aricebo-sized dish at a light year distance. So, we're only likely to "eavesdrop" on ET if their civilisation extends over a few planets/solar systems - something that might require them to increase the power of their transmissions above that for "standard" terrestrial point-to-point communication.
It seems more likely that any signal we pick up will have been deliberately pointed at us (possibly on the basis of a "life" signature in our atmosphere). No-one knows how aliens think, but humans certainly wouldn't spend years and years blasting a (very expensive) signal towards a planet that may or may not harbour a life-form that could receive it.

[edit]
BTW, I'm not saying we shouldn't be looking for these signals - Quite the opposite. We ought to be using a receiver that could detect much weaker transmissions (e.g. an antenna size that could detect our own radio transmissions at over 10 Lyr).


Next 20

Copyright © 2014 University of California