Trimble, who now works at the University of California, Irvine, notes that Weber worked on his gravitational
wave detectors even after the National Science Foundation (NSF) cut off his funding in 1987 and shifted its focus to developing LIGO — the agency ultimately spent more than $ 1 billion on it.
Not exact matches
Thanks to new
detectors that can pick up neutrino signals and
even gravitational
waves, scientists will be ready when the next nearby star explodes, Emily Conover reported in «Waiting for a supernova» (SN: 2/18/17, p. 24).
Vigelius and Melatos believe that such
waves could
even be observable by the existing LIGO
detector, depending on how massive the mountains on nearby neutron stars have grown.
Funding has yet to materialise, but after last Thursday's announcement, Indian prime minister Narendra Modi tweeted that he hopes «to move forward to make
even bigger contribution with an advanced gravitational
wave detector in the country».
There are many things besides gravitational
waves that can upset LIGO's sensitive instrumentation, including vehicles on nearby roads, seismic
waves from earthquakes, slight temperature differences between the
detector arms and
even the tidal tugging of the Sun and the Moon.
At 7:41 a.m. local Livingston time that morning, the Fermi Gamma - ray Space Telescope, LIGO Hanford and the Virgo gravitational
wave detector in Europe had all detected two incredibly dense objects called neutron stars smashing into each other — an event some astronomers thought they would have to wait years or
even decades to see.
Two
detectors can
even determine a rough direction as to where the
wave was traveling from, but if more
detectors are added to the network, astronomers hope to eventually pinpoint, with increasing precision, where they originate.