Testing Gravitation from Light-second to Cosmological Scales with Radio Pulsars

Emmanuel Fonseca

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arXiv · 2510.01062

Testing Gravitation from Light-second to Cosmological Scales with Radio Pulsars

Emmanuel Fonseca

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Abstract

Pulsars are spinning neutron stars typically observed as pulses emitted at radio wavelengths. These pulsations exhibit a rotational stability that rival the best atomic clocks, making pulsars one of the most important tools for resolving gravitational phenomena in extreme environments. I will present an overview of the ways in which radio pulsars can be used to test strong-field gravity and observe gravitational radiation, both in the context of historical and ongoing experiments. I will also describe how these measurements can be translated to sought-after quantities like the masses and moments of inertia of neutron stars.

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Emmanuel Fonseca. 2025-10-01. Testing Gravitation from Light-second to Cosmological Scales with Radio Pulsars. https://arxiv.org/abs/2510.01062

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