Posts by Jon Golding


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1) Message boards : SETI@home Science : The Most Mysterious Star in the Galaxy (Message 1790516)
Posted 26 May 2016 by Profile Jon Golding
Another strange dip in brightness can be seen in the B-filter data on May 23rd. However, it's perhaps worth noting that all of these unexplained dips were recorded by the same observer (PXR).
2) Message boards : SETI@home Science : Have the Chinese been approached about FAST? (Message 1790059)
Posted 24 May 2016 by Profile Jon Golding
Recent article by the BBC reports on the final stages of construction of FAST http://www.bbc.co.uk/news/magazine-36336006
3) Message boards : SETI@home Science : The Most Mysterious Star in the Galaxy (Message 1790016)
Posted 24 May 2016 by Profile Jon Golding
If you select the option to display 'discrepant' data, then you can see the points that have been manually removed
4) Message boards : SETI@home Science : KIC 8462852 dimming events (Message 1787057)
Posted 12 May 2016 by Profile Jon Golding
Here's the plot showing the dip in brightness in the context of the (usually) steady brightness of around 11.8 - 11.9 mag.
I've taken the raw data from https://www.aavso.org/apps/webobs/results/?star=KIC+8462852&page=21 and made a plot of the dimming event. The entire dimming event lasts around 2 hr and is made up of a series of rapid dips in brightness. This would appear to fit with a cluster of objects rapidly moving across the face of the star (comets?)

5) Message boards : SETI@home Science : KIC 8462852 dimming events (Message 1786241)
Posted 9 May 2016 by Profile Jon Golding
Wow! That's a huge reduction in brightness. Even bigger than the largest 20% dip reported (https://arxiv.org/abs/1509.03622)
6) Message boards : SETI@home Science : KIC 8462852 dimming events (Message 1786158)
Posted 9 May 2016 by Profile Jon Golding
Seems that the series of observations showing a possible transit were all recorded by the same observer, so the results could be explained by a technical problem or local atmospheric effect that day. Going back to the original paper on KIC 8462852, some of those dimming events happened in clusters, so there may be more along anytime soon now. Hopefully someone can get a spectrum of the star during a dimming event and that might yield some clues as to what (or who!) is doing this.
7) Message boards : SETI@home Science : KIC 8462852 dimming events (Message 1786118)
Posted 9 May 2016 by Profile Jon Golding
Seems like there was a recent dimming of KIC 8462852 (Tabby's star), as monitored by the American Association of Variable Star Observers. https://www.aavso.org/lcg
Is this star planned to be included in the Breakthrough targeted search when Parkes telescope data becomes available?
8) Message boards : News : Big boost for SETI@home from Yuri Milner's Breakthrough Listen Initiative (Message 1703474)
Posted 20 Jul 2015 by Profile Jon Golding
Great to read that up to one third of the money ($33M) will be to hire new postgrad students and science professionals. This should certainly speed up development of new hardware and optimised NTPCKR algorithms to search through the mass of data already acquired (and yet to be acquired).
Also great to see that we'll be getting data from Southern skies via Parkes telescope.
9) Message boards : News : Friday March 21 SETI talks to be webcast live. (Message 1495007)
Posted 25 Mar 2014 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.
10) Message boards : News : Friday March 21 SETI talks to be webcast live. (Message 1493693)
Posted 22 Mar 2014 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?
11) Message boards : SETI@home Science : Let's see some results! (Message 1475811)
Posted 11 Feb 2014 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.
12) Message boards : News : What's new about SETI@home v7 (Message 1380836)
Posted 13 Jun 2013 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?
13) Message boards : News : Green Bank Telescope observations to start Saturday. (Message 1106581)
Posted 15 May 2011 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
14) Message boards : News : Green Bank Telescope observations to start Saturday. (Message 1106449)
Posted 15 May 2011 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.
15) Message boards : News : Green Bank Telescope observations to start Saturday. (Message 1104382)
Posted 8 May 2011 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?
16) Message boards : Near Time Persistency Checker : Please Read First! (Message 1101646)
Posted 29 Apr 2011 by Profile Jon Golding
Oh. Well that was short-lived. Seems like we've reverted back to just 10 candidates now.
17) Message boards : Near Time Persistency Checker : Please Read First! (Message 1101360)
Posted 28 Apr 2011 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?
18) Message boards : Near Time Persistency Checker : Candidate: 20581835 (RA: 22.895508 Dec: 16.432024) (Message 1098729)
Posted 18 Apr 2011 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?
19) Message boards : Near Time Persistency Checker : Candidate: 20581835 (RA: 22.895508 Dec: 16.432024) (Message 1088398)
Posted 19 Mar 2011 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.
20) Message boards : Near Time Persistency Checker : Please Read First! (Message 1086084)
Posted 11 Mar 2011 by Profile Jon Golding
Now that the NTPCKr is running again, any estimate as to when we'll see some updated candidate stats?


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