Final update

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Profile David Anderson
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Message 2115484 - Posted: 3 Mar 2023, 4:44:59 UTC
Last modified: 3 Mar 2023, 4:54:06 UTC

Sorry for the long gap between reports. Since last April, my colleagues (Dan Werthimer, Eric Korpela, Jeff Cobb, Wei Liu) have done two re-observation sessions at FAST, looking at a few dozen of the top-scoring multiplets found by Nebula. So far it's been all barycentric spike/gaussian multiplets. With our remaining observing time we'll look at some pulse/triplet and autocorr multiplets, and some non-barycentric, as well.

We haven't examined the re-observation data yet, and it's unclear how we're going to do this. For barycentric multiplets I think the plan is to manually look at waterfall plots, possibly of the raw FFT data, possibly after processing by the SETI@home client (running on our own computers). For non-barycentric this isn't feasible - the frequency range is big and there's lots of RFI. I don't know; I'm out of the loop at this point.

Whether or not we find ET, there's still the matter of writing papers describing what we did, and (in the case of Nebula) giving sensitivity bounds. We had planned to write two papers, one about the front end and one about the back end (Nebula). These papers are about 80% done, but there has been no progress on them in over a year. I can't go into details. I've done everything I can to complete these papers, but I can't do it by myself.

My involvement in SETI@home has ended. I'd like to thank everyone who has participated, especially those who have read and commented on these Nebula reports. Since then, I worked for a while on PanoSETI, an optical SETI project. I've also worked on two music-related projects: Music Match and Numula. I'm also working as a contractor for IMSLP, the online classical music score library. And I continue to run the BOINC project.

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Message 2115504 - Posted: 3 Mar 2023, 13:41:00 UTC

Thanks for the update.

I do hope the papers get published someday. They're really the culmination of SETI's life, and I would image there exists somebody at the Berkeley (or perhaps other universities elsewhere) that would be willing to help. Alas, I am no longer in academia or I would ask around.
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Message 2115582 - Posted: 4 Mar 2023, 23:39:55 UTC - in response to Message 2115484.  

Thanks for update.

My involvement in SETI@home has ended.

Sad to hear that but life goes on, changes are inevitable.
Hope those long awaited papers will be finished finally. At least next generation of SETI will have something to cite :)
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Message 2115718 - Posted: 7 Mar 2023, 17:49:29 UTC - in response to Message 2115484.  

Thanks for a good yet sad update.

Good for the progress and for moving on. Also for the moving on, good and sad also! Good luck for the future!!


Over on an Einstein@home thread, a succinct summary of the summaries is given on:

Can we run Seti@home has another sub-project of Einstein@home?

The brevity is all too brief for the twists and turns we've enjoyed over the last quarter century!

Many thanks to all and...

Keep searchin'!

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Take a look for yourself: Linux Format
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Message boards : Nebula : Final update

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