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arXiv · 2306.13137

A Pulsar-Based Map of Galactic Acceleration

Abigail Moran·Chiara M. F. Mingarelli·Ken Van Tilburg·Deborah Good
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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.

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Abigail Moran, Chiara M. F. Mingarelli, Ken Van Tilburg, Deborah Good. 2023-06-22. A Pulsar-Based Map of Galactic Acceleration. https://doi.org/10.1103/physrevd.109.123015

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