Hi Bill, Michael, and all, On 2/16/2016 2:00 PM, Bill Somerville wrote: > it seems such a large clean signal that I assume even the previous > equipment might have detected it.
The design sensitivity of Advanced LIGO is 10 times better than the previous detector, and the low-frequency end has been extended downward from about 40 Hz to 10 Hz. The present sensitivity is not yet quite at the design level for Advanced LIGO, but it's getting close. I do not think the observed signal would have been detected in any previous runs -- or if detected, would not have been considered sufficiently reliable for publication. Advanced LIGO's sensitivity is such that the instrument is likely to observe dozens of compact binary coalescence sources per year. On 2/16/2016 2:07 PM, Michael Black wrote: > Is it "luck" or misinterpretation of what they are actually seeing? > There's an implied assumption in the paper that they are seeing gravity > waves as though there is no possible other explanation. Quite the contrary -- there are no implied assumptions involved here. The LIGO-Virgo Collaboration has made a thoroughly extensive search for any other way that the observed signals could have been produced nearly (but not quite) simultaneously at two sites separated by some 3000 km. The group has been extremely careful and thorough; their results can be taken at face value. If interested in further details, try one or more of the links posted here: http://iop.msgfocus.com/q/17EwRbiAyBlr4hT1gr7d2D/wv -- Joe, K1JT ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
