Precision timing of PSR J1012+5307 and strong-field GR tests

Kosmas Lazaridis , Norbert Wex , Axel Jessner , Michael Kramer , J. Anton Zensus , Ben W. Stappers , Gemma H. Janssen , Mark B. Purver

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Andrew G. Lyne Christine A. Jordan Gregory Desvignes Ismael Cognard Gilles Theureau

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classification 🌌 astro-ph.GA gr-qc

keywords timingj1012precisionstrong-fieldvariationanalysisarraybinary

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We report on the high precision timing analysis of the pulsar-white dwarf binary PSR J1012+5307. Using 15 years of multi-telescope data from the European Pulsar Timing Array (EPTA) network, a significant measurement of the variation of the orbital period is obtained. Using this ideal strong-field gravity laboratory we derive theory independent limits for both the dipole radiation and the variation of the gravitational constant.

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Precision timing of PSR J1012+5307 and strong-field GR tests

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