LIGO researchers completely rebuilt their instruments, Gravitational waves may have been discovered! Exciting" Again a press storm ensued From the beginning there have been reasons to doubt that the rumor will hold up In particular LIGO researchers purposefully inject false signals in to their data to test the sensitivity of their analysis techniques and to keep people honest Only a handful of people know when the fake signals are injected and they reveal that information only at the very end of the process after researchers have gone through all the checks to validate a signal In fact LIGO researchers thought they had discovered a signal on 16 September 2010 just before they shut down for the rebuild But it turned out to be an injected signal which the researchers found out only as they were about to submit for publication a paper claiming a discovery That procedure would seem to render it impossible for LIGO researchers to know for 3 months whether they had a real signal or not Krauss acknowledges the point but says that in September 2015 a prominent physicist told him that the LIGO team had spotted the signal in data from an engineering run into which—he claims—false signals are not injected However that physicist is not a member of the LIGO collaboration Krauss says so the information is second-hand at best More recently Krauss says others have told him that the LIGO team is writing a paper and debating whether a potential signal fits the signal expected from a pair of neutron stars spiraling together or a pair of black holes spiraling together Again Krauss says the sources of these additional rumors do not work within the LIGO collaboration Krauss has taken some blowback for his rumor-mongering "[I]f true you are trying to steal their glory; if false you are damaging scientific credibility" tweeted Michael Merrifield an astronomer at the University of Nottingham in the United Kingdom Erik Mamajek an astronomer at the University of Rochester in New York tweeted "Does [the LIGO] project sanction your rumor-mongering ‘Confirmed’ followed by ‘may have been’ = BS Hurts science" Krauss the author of nine popular science books including The Physics of Star Trek and A Universe from Nothing counters that he was merely trying key in the public to the discussions physicists are already having among themselves "All I was trying to do was prepare people for the potential excitement" he says "If something really excites me should I never talk about it" LIGO leaders seem somewhat dismayed by whole affair "I’ve seen Krauss’s new tweet" wrote Gabriela Gonzalez a physicist at Louisiana State University Baton Rouge and spokesperson for the LIGO Scientific Collaboration in an email "I’m disappointed (again) that he didn’t ask me or anybody in LIGO leadership" Krauss says that he purposefully avoided trying to confirm the rumors because doing so would have been unethical "If I contacted them that would imply that I was trying to get information I shouldn’t have" he says "That would have been inappropriate" Krauss adds that had he been told something by LIGO researchers in confidence he would have kept it to himself For their part LIGO researchers declined to comment on the purported signal "We have not finished taking data yet and haven’t finished reviewing analysis of results even from early in the run" Gonzalez says "We’ll certainly let you know when we have news to share" And that’s no rumor sandalwood and peeli mirch (yellow chilly).

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