Did S5 Science Run Get Started?

Ben Owen
Ben Owen
Joined: 21 Dec 04
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RE: IMHO, communication

Message 19105 in response to message 19097

Quote:
IMHO, communication from the E@H has been reduced to a trickle lately. Not recommended if they want to keep people interested enough to support the effort.....

The reason for this is related to the title of the thread. Yes, S5 has started, with a lot of work. Things seem to be stabilizing, though.

It will be a few months before Einstein@Home starts working on S5 data, though. We're treating S4 as a serious search, of course, but we're also using it as a guinea pig for some better analysis tricks we'll need for S5. Also, there is a lot of work that goes into cleaning up the data and cutting it up into bite-sized chunks that won't kill everyone's computers and internet connections.

Stay tuned,
Ben

Ben Owen
Ben Owen
Joined: 21 Dec 04
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RE: How does the Signal to

Message 19106 in response to message 19103

Quote:
How does the Signal to Noise Ratio plotted as function of Time in the "Online Binary Inspiral Search" chart relate to the Work Units that E@H participants are (or will be) crunching?

It's a different source and different analysis, so it's not directly related. But it is one measure of the overall "health" of the instrument. The noise curve isn't the nice simple curve you see in most arXiv papers; instead it changes with time and the operators and scimons need to know when something bad is happening and needs to be fixed.

So what are figures of merit? Basically, numbers that say how well it is going. The noise spectrum itself is made of tens of thousands of numbers, but human beings can only keep track of a few. So one "figure of merit" is "How far could we see a binary inspiral?" That condenses those thousands of numbers into one in a particular way that is relevant for that search. There is another one for pulsars: "How much data (that is, how long) would we need to detect the highest possible signal from a known pulsar?"

There are several more for pulsars and for other sources, but they all boil down to having something on the video projector in the control room so you can look up and say "Uh oh, something's degrading our sensitivity and we need to track it down."

Hope this helps,
Ben

Chipper Q
Chipper Q
Joined: 20 Feb 05
Posts: 1,540
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RE: RE: IMHO,

Message 19107 in response to message 19105

Quote:
Quote:
IMHO, communication from the E@H has been reduced to a trickle lately. Not recommended if they want to keep people interested enough to support the effort.....

The reason for this is related to the title of the thread. Yes, S5 has started, with a lot of work. Things seem to be stabilizing, though.

It will be a few months before Einstein@Home starts working on S5 data, though. We're treating S4 as a serious search, of course, but we're also using it as a guinea pig for some better analysis tricks we'll need for S5. Also, there is a lot of work that goes into cleaning up the data and cutting it up into bite-sized chunks that won't kill everyone's computers and internet connections.

Stay tuned,
Ben


Thanks, Ben

It's a novel and exciting experience for me, getting to look over the scientists shoulders as they're working, and I don't think I'd trade it for anything. Thanks again for the update, and the hard work!

AnRM
AnRM
Joined: 9 Feb 05
Posts: 213
Credit: 4,346,941
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RE: RE: RE: IMHO,

Message 19108 in response to message 19107

Quote:
Quote:
Quote:
IMHO, communication from the E@H has been reduced to a trickle lately. Not recommended if they want to keep people interested enough to support the effort.....

Stay tuned,
Ben


Thanks, Ben

It's a novel and exciting experience for me, getting to look over the scientists shoulders as they're working, and I don't think I'd trade it for anything. Thanks again for the update, and the hard work!

Right on, Chipper!....I hope they can keep the communication/information coming. Thanks, Ben.

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