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Few and far between

Pulsars — fast-spinning neutron stars — are precision clocks provided by nature. Finding pulsars in the Galactic Centre orbiting Sagittarius A*, the closest supermassive black hole to the Earth, will offer unprecedented opportunities to test general relativity and its alternatives.

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Fig. 1: Tracking a pulsar as it orbits the central supermassive black hole.


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K.L. and R.E. acknowledge financial support by the European Research Council for the ERC Synergy Grant BlackHoleCam under contract no. 610058. Fig. 1 is based on a sketch by R.E. The telescope outline is based on a photograph by E. Middelberg.

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Correspondence to Kuo Liu or Ralph Eatough.

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Liu, K., Eatough, R. Few and far between. Nat Astron 1, 812–813 (2017).

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