New PTA-Caliber Millisecond Pulsars from the GBNCC Survey

One of the main science goals of the Green Bank North Celestial Cap (GBNCC) pulsar survey is to find new millisecond pulsars (MSPs) and rapidly assess their suitability for inclusion in pulsar timing arrays (PTAs). The International Pulsar Timing Array (IPTA) currently monitors about 100 MSPs with sub-microsecond RMS residuals in an effort to detect low-frequency gravitational waves from merging supermassive black hole binaries. One of the best ways to improve our sensitivity to the stochastic gravitational wave background is to add high-caliber MSPs to PTAs. Over the past two years, ten MSPs have been discovered in the GBNCC pulsar survey and several have already been added to the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) PTA, and these sources will likely be incorporated into regular monitoring programs by other IPTA member groups soon. In this poster, we will describe the vetting process for new GBNCC MSPs and the timing properies of the latest discoveries incorporated into NANOGrav and other PTAs.