NANOGrav's 15-Year Data Release

Artist Rendering of a Pulsar Timing Array with a Gravitational Wave Background

Artist’s interpretation of an array of pulsars being affected by gravitational ripples produced by a supermassive black hole binary in a distant galaxy. Credit: Aurore Simonnet for the NANOGrav Collaboration

Public Briefing

On Thursday, June 29th of 2023, we invited all interested members of the public to watch our public briefing live! The announcement reported the results of the analysis of NANOGrav’s 15-year data set, and interpretations of those results.

You can watch the announcement and the following Q&A session with our panelists on YouTube or via the embedded link below!

Briefing Panelists

Dr. Stephen Taylor
NANOGrav Chair
15-year GWB Paper co-lead
Assistant Professor, Vanderbilt University
Dr. Thankful Cromartie
Timing Working Group Chair
15-year Timing Paper co-author
Einstein Postdoctoral Fellow, Cornell University
Dr. Michael Lam
Noise Budget Working Group co-Chair
15-year Detector Paper co-author
Research Scientist, SETI Institute
Dr. Luke Kelley
Astrophysics Working Group Chair
15-year Astrophysics Paper lead
Assistant Adjunct Professor, University of California Berkeley
Dr. Maura McLaughlin
NANOGrav Physics Frontiers Center Co-Director
International Pulsar Timing Array Steering Committee Member
Eberly Distinguished Professor of Physics and Astronomy, West Virginia University


Official Press Release

Artist Rendering of a Pulsar Timing Array with a Gravitational Wave Background

Astrophysicists using large radio telescopes to observe a collection of cosmic clocks in our Galaxy have found evidence for gravitational waves that oscillate with periods of years to decades, according to a set of papers published today in The Astrophysical Journal Letters. 

Publication Summaries

Conceptual Illustration of a Pulsar

In order to ensure that this scientific milestone is as accessible as possible, our collaboration has created a series of short, plain-language summaries for our seminal publications! These cover everything from specifics about our data products, the details of the evidence we have uncovered, and how we are probing new scientific frontiers.

Special Edition of ApJ Letters

Cover of the Astrophysical Journal Letters.

Now that our papers are published, you can check out NANOGrav’s focus issue of The Astrophysical Journal Letters where all our 15-year analysis results are being collected. This issue will continue to be updated over the next few months as we examine the various cosmic insights our data may reveal.