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Conquering systematics in the timing of the pulsar triple system J0337+1715: Towards a unique and robust test of the strong equivalence principle

Published online by Cambridge University Press:  04 June 2018

N. V. Gusinskaia ,
A. M. Archibald ,
J. W. T. Hessels ,
D. R. Lorimer ,
S. M. Ransom ,
I. H. Stairs  and
R. S. Lynch
N. V. Gusinskaia
Affiliation:
Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands. email: [email protected]
A. M. Archibald
Affiliation:
Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands. email: [email protected]
J. W. T. Hessels
Affiliation:
Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands. email: [email protected] ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, 7990 AA, Dwingeloo, The Netherlands
D. R. Lorimer
Affiliation:
Dept. of Physics and Astronomy, West Virginia University, PO Box 6315, Morgantown, WV 26506, USA Center for Gravitational Waves and Cosmology, West Virginia University, Chestnut Ridge Research Building, Morgantown, WV 26505, USA Green Bank Observatory, Green Bank, WV 24944, USA
S. M. Ransom
Affiliation:
National Radio Astronomy Observatory, Charlottesville, VA 22903, USA
I. H. Stairs
Affiliation:
Dept. of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
R. S. Lynch
Affiliation:
Center for Gravitational Waves and Cosmology, West Virginia University, Chestnut Ridge Research Building, Morgantown, WV 26505, USA Green Bank Observatory, Green Bank, WV 24944, USA
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Abstract

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PSR J0337+1715 is a millisecond radio pulsar in a hierarchical stellar triple system with two white dwarfs. This system is a unique and excellent laboratory in which to test the strong equivalence principle (SEP) of general relativity. An initial SEP-violation test was performed using direct 3-body numerical integration of the orbit in order to model the more than 25000 pulse times of arrival (TOAs) from three radio telescopes: Arecibo, Green Bank and Westerbork. In this work I present our efforts to quantify the effects of systematics in the TOAs and timing residuals, which limit the precision of an SEP test. In particular, we apply Fourier-based techniques to the timing residuals in order to isolate the effects of systematics that can masquerade as an SEP violation.

Keywords

gravitationrelativitymethods: data analysismethods: statisticalmethods: numerical(stars:) pulsars: individual (PSR J0337+1715)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S337: Pulsar Astrophysics the Next Fifty Years , September 2017 , pp. 342 - 343
Copyright
Copyright © International Astronomical Union 2018