“There’s nothing in nature that can mimic this.… Only gravitational waves can make that.”
While LIGO picks up gravitational wave blips that can last mere fractions of a second, orbiting supermassive black holes are expected to pump out waves continually for millions of years, creating ripples that blanket the cosmos with their constant hum. “This is a very different sort of thing, very new sort of thing,” says LIGO researcher Daniel Holz, an astrophysicist at the University of Chicago. “That is awesome.
“The Earth is just randomly bumping around on this sea of gravitational waves,” says astrophysicist Maura McLaughlin of West Virginia University in Morgantown and a member of the North American Nanohertz Observatory for Gravitational Waves, or NANOGrav. To ensure that they were seeing the gravitational waves, rather than uninteresting jitters, the researchers looked for a special type of correlation between different pulsars. Pulsars near one another on the sky should show similar timing shifts, but those that are at right angles to one another should observe opposite shifts: One pulsar’s blips come early while the other’s come late.
The EPTA team spent an even longer time staring at pulsars — a quarter of a century. “We were getting to the point where we were starting to think maybe the signal is just so weak, we’ll never ever find it,” Keith says.
México Últimas Noticias, México Titulares
Similar News:También puedes leer noticias similares a ésta que hemos recopilado de otras fuentes de noticias.
BREAKING NEWS: Physicists Have Detected The Background Hum of The UniverseIt's official.
Leer más »
Astronomers reveal evidence of universe's 'background hum'Scientists working at gravitational wave detectors on several continents say they have finally found strong evidence of the background waves.
Leer más »
Scientists have finally 'heard' the chorus of gravitational waves that ripple through the universeScientists have observed for the first time the faint ripples caused by the motion of black holes that are gently stretching and squeezing everything in the universe.
Leer más »
Scientists have finally 'heard' the chorus of gravitational waves that ripple through the universeScientists have observed for the first time the faint ripples caused by the motion of black holes that are gently stretching and squeezing everything in the universe
Leer más »
Scientists have finally 'heard' the chorus of gravitational waves that ripple through the universeScientists have observed for the first time the faint ripples caused by the motion of black holes, reporting they were able to “hear” what are called low-frequency gravitational waves.
Leer más »
Scientists discover that universe is awash in gravitational wavesScientists on Wednesday unveiled evidence that gravitational waves, the ripples in the fabric of space-time predicted by Albert Einstein more than a century ago, are permeating the universe at low frequencies - creating a cosmic background hum.
Leer más »