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15-Year Pulsar Timing Reveals Cosmic Gravitational Waves Evidence

15-Year Pulsar Timing Reveals Cosmic Gravitational Waves Evidence
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New mexicoUnited statesWest virginiaLuke zoltan kelleyChung pei maJudy chandler webbUniversity of californiaCanadian institute for advanced researchVanderbilt university stephen taylorBetty moore foundationNational science foundation physics frontiers centerCanadian hydrogen intensity mapping experimentNatural sciencesGreen bank telescopeEngineering research council of canadaMilky way

After 15 years, pulsar timing yields evidence of cosmic background gravitational waves: Groups report evidence that the cosmos is filled with a background of gravitational waves likely due to mergers of supermassive black hole binaries

After 15 years, pulsar timing yields evidence of cosmic background gravitational waves: Groups report evidence that the cosmos is filled with a background of gravitational waves likely due to mergers of supermassive black hole binaries
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United statesNew mexicoWest virginiaLuke zoltan kelleyJudy chandler webbChung pei maNational science foundation physics frontiers centerUniversity of californiaNatural sciencesEngineering research council of canadaBetty moore foundationCanadian hydrogen intensity mapping experimentVanderbilt university stephen taylorGreen bank telescopeCanadian institute for advanced researchMilky way

After 15 Years, Pulsar Timing Yields Evidence Of Cosmic Background Gravitational Waves

After 15 Years, Pulsar Timing Yields Evidence Of Cosmic Background Gravitational Waves
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New mexicoUnited statesWest virginiaJudy chandler webbChung pei maLuke zoltan kelleyGreen bank telescopeUniversity of californiaCanadian hydrogen intensity mapping experimentVanderbilt university stephen taylorMilky wayNorth american nanohertz observatoryGravitational wavesVanderbilt universityStephen taylorAstrophysical journal letters

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

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