Candidate: 20581835 (RA: 22.895508 Dec: 16.432024)

Message boards : Near Time Persistency Checker : Candidate: 20581835 (RA: 22.895508 Dec: 16.432024)

Author	Message
Near Time Persistency Checker Volunteer moderator Project administrator Project developer Project scientist Send message Joined: 8 Jul 09 Posts: 41 Credit: 0 RAC: 0	Message 1087874 - Posted: 17 Mar 2011, 22:27:32 UTC Last modified: 17 Mar 2011, 22:27:32 UTC
	This is a discussion thread for SETI@home candidate # 20581835 (located at RA: 22.895508 Dec: 16.432024) Please feel to exchange thoughts, comments, questions and answers regarding this particular candidate. For more information, please read the NTPCkr Frequently Asked Questions (FAQ).
	ID: 1087874 ·

ML1 Volunteer tester Send message Joined: 25 Nov 01 Posts: 7210 Credit: 3,703,390 RAC: 728	Message 1088227 - Posted: 18 Mar 2011, 22:24:21 UTC Last modified: 18 Mar 2011, 22:26:38 UTC
	OK, I'll do the kick-off with: They all look to be in the same small region. Also, the ids suggest that all the data was acquired at about the same time... Radar, RFI, solar burst, or has the picker only looked at this one area so far? For the scoring, is greater weight given for signal repeats for greater intervals of time between data acquisition? Keep searchin', Martin ____________ Mandriva Linux A user friendly OS! See new freedom Mageia2 The Future is what We make IT (GPLv3)
	ID: 1088227 ·

Jon Golding Send message Joined: 20 Apr 00 Posts: 53 Credit: 346,419 RAC: 153	Message 1088398 - Posted: 19 Mar 2011, 13:42:12 UTC - in response to Message 1088227. Last modified: 19 Mar 2011, 13:44:00 UTC
	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. ____________
	ID: 1088398 ·

ML1 Volunteer tester Send message Joined: 25 Nov 01 Posts: 7210 Credit: 3,703,390 RAC: 728	Message 1088651 - Posted: 20 Mar 2011, 1:20:01 UTC
	Looking at a mere 3 examples, they all show vertical lines in the waterfall plots. Hence, no Doppler shift, hence most likely a terrestrial source (RFI). There's sidebands there suggesting modulation. What's the "Distance (beams)" plot that is laid alongside some of the plots? And this thread doesn't link back to the NTPCkr page for this candidate! Automatically add that in the auto-generated first post? Keep searchin', Martin ____________ Mandriva Linux A user friendly OS! See new freedom Mageia2 The Future is what We make IT (GPLv3)
	ID: 1088651 ·

Jon Golding Send message Joined: 20 Apr 00 Posts: 53 Credit: 346,419 RAC: 153	Message 1098729 - Posted: 18 Apr 2011, 15:37:56 UTC Last modified: 18 Apr 2011, 15:38:31 UTC
	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? ____________
	ID: 1098729 ·

Message boards : Near Time Persistency Checker : Candidate: 20581835 (RA: 22.895508 Dec: 16.432024)