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After 15 years, pulsar timing yields evidence

LIGO confirmed the existence of gravitational waves in 2015, detecting one-time perturbations of spacetime from the merger of large black holes. There should be a background of gravitational waves permeating space due to other cataclysmic events in the cosmos, perhaps dating from the Big Bang. The NANOGrav consortium reports evidence from pulsar timing arrays that space is filled with such waves. Simulations suggest the cosmic gravitational wave background is likely caused by the merger of hundreds of thousands of supermassive black holes over the history of the universe.

United statesNew mexicoWest virginiaAurore simonnetJudy chandler webbLuke zoltan kelleyChung pei maBetty moore foundationMethod of researchEngineering research council of canadaUniversity of californiaGreen bank telescopeCanadian hydrogen intensity mapping experimentNational science foundation physics frontiers centerNatural sciencesVanderbilt university stephen taylor

A Background Hum Pervades the Universe Scientists Are Racing to Find Its Source

Astronomers are now seeking to pinpoint the origins of an exciting new form of gravitational waves that was announced earlier this year

United statesSouth africaChiara mingarelliAlbert einsteinAchamveedu gopakumarAndrea mitridateStephen taylorCaitlin wittVanderbilt universityNorthwestern universityTata institute of fundamental researchEuropean space agencyYale universityInternational pulsar timing arrayNihan polScott ransom

China s FAST telescope finds key evidence for existence of nanohertz gravitational waves

China s FAST telescope finds key evidence for existence of nanohertz gravitational waves
cnwest.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from cnwest.com Daily Mail and Mail on Sunday newspapers.

Li kejiaAlbert einsteinXu hengResearch in astronomyPeople dailyProfessor of peking universityMedia labChinese pulsar timing arrayNational astronomical observatoriesChinese academyNorth american nanohertz observatoryGravitational wavesEuropean pulsar timing arrayAustralian parkes pulsar timing arrayChair professorPeking university

Drop the Bass: Evidence for a Gravitational Wave Background from a Galaxy-sized Detector

Drop the Bass: Evidence for a Gravitational Wave Background from a Galaxy-sized Detector
astrobites.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from astrobites.org Daily Mail and Mail on Sunday newspapers.

Graham doskochBrent shapiro albertWilliam lambHuei searsBriley lewisLucas brownJenny calahanHaley wahlOlena shmahalo nanogravGreen bank telescopeAstrophysical journal lettersNorth american nanohertz observatoryGravitational wavesArecibo observatoryVery large arrayStandard model

China s FAST telescope finds key evidence for existence of nanohertz gravitational waves

Photo shows the Five-hundred-meter Aperture Spherical Radio Telescope (FAST) of China. (Photo court

Li kejiaLiang junChang shaAlbert einsteinXu hengResearch in astronomyMedia labPeople dailyProfessor of peking universityChinese pulsar timing arrayNational astronomical observatoriesChinese academyNorth american nanohertz observatoryGravitational wavesEuropean pulsar timing arrayAustralian parkes pulsar timing array