Candidate: 921360 (RA: 2.630859 Dec: 26.714449)


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Message boards : Near Time Persistency Checker : Candidate: 921360 (RA: 2.630859 Dec: 26.714449)

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Message 927263 - Posted: 19 Aug 2009, 21:28:48 UTC
Last modified: 19 Aug 2009, 21:28:48 UTC

This is a discussion thread for SETI@home candidate # 921360 (located at RA: 2.630859 Dec: 26.714449)
Please feel to exchange thoughts, comments, questions and answers regarding this particular candidate.
For more information, please read the NTPCkr Frequently Asked Questions (FAQ).

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Message 927294 - Posted: 19 Aug 2009, 22:43:22 UTC - in response to Message 927263.
Last modified: 19 Aug 2009, 22:46:31 UTC

OK... I'll shoot some first-glance observations:

1 921360 2.630859 26.714449 9589 (309/2395) 1542 (27/673) 2394 (41/1003) 2635 (17/921) 0 -3.614816e+6 0 12 Aug 2009 15:08:24 UTC skyplot / discuss 2 20582818 22.973145 16.295956 9292 (389/2328) 1363 (18/620) 2583 (94/1005) 1126 (4/444) 0 -3.216304e+6 0 12 Aug 2009 23:16:30 UTC skyplot / discuss 3 20582801 22.987793 16.295956 11459 (524/2760) 1476 (21/698) 2717 (95/1076) 1478 (5/553) 0 -3.207500e+6 0 17 Aug 2009 16:23:16 UTC skyplot / discuss 4 20504996 23.165039 16.315388 9831 (430/2618) 454 (2/171) 1074 (18/459) 1502 (12/605) 0 -3.151631e+6 0 15 Aug 2009 19:47:23 UTC skyplot / discuss 5 20493683 23.144531 15.771995 11087 (485/2703) 1245 (15/552) 2255 (64/963) 1680 (11/659) 0 -3.052986e+6 0 13 Aug 2009 12:01:23 UTC skyplot / discuss 6 20499128 23.165039 15.771995 7685 (272/2128) 336 (0/134) 845 (16/342) 1161 (10/472) 0 -3.011546e+6 0 10 Aug 2009 13:34:35 UTC skyplot / discuss 7 20504975 23.167969 16.315388 7381 (277/2098) 405 (0/148) 954 (13/382) 1159 (3/470) 0 -2.880384e+6 0 15 Aug 2009 19:53:59 UTC skyplot / discuss 8 20496034 23.020020 16.295956 11081 (530/2724) 1573 (28/705) 2891 (89/1175) 1414 (1/548) 0 -2.427523e+6 0 13 Aug 2009 10:51:10 UTC skyplot / discuss 9 20504984 23.170898 16.315388 6539 (221/1805) 367 (0/136) 854 (14/365) 830 (4/345) 0 -2.135665e+6 0 7 Aug 2009 12:48:27 UTC skyplot / discuss 10 31427657 19.322754 13.478055 5814 (141/1682) 19 (0/0) 9613 (558/295) 2688 (38/1048) 0 -1.818493e+6 0 13 Aug 2009 5:19:59 UTC


"1" and "10" look to be out on their own.

For the others, there's groupings whereby multiple candidates look to be on adjacent RA or Dec positions. Is that for real, or just a quirk of recent sampling or an artefact of RFI counts?

Keep searchin',
Martin
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Message 927295 - Posted: 19 Aug 2009, 22:51:08 UTC
Last modified: 19 Aug 2009, 22:51:40 UTC

From the NitPicker FAQ;

Q: Why are so many candidates at the same Declination?

A: Quite often the telescope at Arecibo is "parked" when not in use by other projects. When it's parked it is sitting at a single line of Declination (while the Right Ascension changes due to earth rotation). However, since we are collecting all the time we get an excess of data from these parked Declinations (like 18, which is quite common).

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I think thats the reason Martin.

John.
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Message 927312 - Posted: 20 Aug 2009, 0:30:53 UTC

I suspect this candidate will be gone soon. Looks like RFI on its waterfall plot.
http://setiathome.berkeley.edu/ntpckr.php?c=sigplot&ra=2.63173699&dec=26.7393188&time=2454834.4742766&freq=1421126990.9889&sigtype=spike&sigid=1823209640
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Message 927544 - Posted: 20 Aug 2009, 20:42:26 UTC

How much of a diagonal sweep would an extraterrestrial source be expected to produce on these waterfall plots?
Some plots seem to be very slightly diagonal; ending up at a fractionally smaller frequency than where they start out. However, I've no feeling for whether this very small frequency drift is interesting or is within the limits of what we'd expect to see for terrestrial RFI.
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