Integration of CHIME into the NANOGrav Pulsar Timing Array
Keywords:
Pulsars, Neutron StarsAbstract
The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) pulsar timing array (PTA) isconstructed from long-term timing campaigns of a large number of millisecond pulsars (MSPs). Wideband timing
techniques have been used in NANOGrav datasets since the release of the 12.5-yr dataset and have proved useful
for studying time-varying dispersion measure, which can limit timing precision.We are also limited by the fact
that NANOGrav observations occur on a monthly cadence.The Canadian Hydrogen Intensity Mapping Experi-
ment (CHIME) Telescope has been observing NANOGrav MSPs at 600 MHz (400 MHz bandwidth) with nearly
daily cadence for the past four years.In this paper we report the results of combining one year of CHIME data
with NANOGrav data taken over the same time period for four MSPs: PSR J0030+0451, PSR J0613−0200, PSR
J0740+6620, and PSR J2145−0750.
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