  The North American Nanohertz Observatory for Gravitational Waves (NANOGrav)
is a collaboration of researchers who are actively engaged in using North
American radio telescopes to detect and study gravitational waves via pulsar
timing. To achieve this goal, we regularly observe millisecond pulsars (MSPs)
with the Arecibo and Green Bank Telescopes and develop and implement new
instrumentation and algorithms for searching for and observing pulsars,
calculating arrival times, understanding and correcting for propagation delays
and sources of noise in our data, and detecting and characterizing a variety of
gravitational wave sources. We collaborate on these activities with colleagues
in the International Pulsar Timing Array (IPTA). We also educate students of
all levels and the public about the detection and study of gravitational waves
via pulsar timing.
