A Pulsar-Based Map of Galactic Acceleration

Abstract

Binary pulsars can be used to probe Galactic potential gradients through calculating their line-of-sight accelerations. We present the first data release of direct line-of-sight acceleration measurements for 29 binary pulsars. We validate these data with a local acceleration model, and compare our results to those from earlier works. We find evidence for an acceleration gradient in agreement with these values, with our results indicating a local disk density of ${\rho }_{\mathrm{d}}=0.040_{-0.020}^{+0.020}{\mathrm{M}}_{\odot }{\mathrm{pc}}^{-3}$. We also find evidence for unmodeled noise of unknown origin in our data set.

arXiv comment12 pages, 7 figures

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