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Constraints on the standard model extension with binary pulsars

Published online by Cambridge University Press:  20 March 2013

Yi Xie
Yi Xie*
Affiliation:
Department of Astronomy, Nanjing University, Nanjing 210093, China email: [email protected]
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Abstract

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Under the standard model extension (SME) framework, Lorentz invariance is tested in five binary pulsars: PSR J0737-3039, PSR B1534+12, PSR J1756-2251, PSR B1913+16 and PSR B2127+11C. By analyzing the advance of periastron, we obtain the constraints on a dimensionless combination of SME parameters that is sensitive to timing observations. The results imply no evidence for the break of Lorentz invariance at 10−10 level, one order of magnitude larger than previous estimation.

Keywords

gravitationrelativitypulsars: PSR 0737-3039PSR B1534+12PSR J1756-2251PSR B1913+16PSR B2127+11C
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S291: Neutron Stars and Pulsars: Challenges and Opportunities after 80 years , August 2012 , pp. 558 - 560
Copyright
Copyright © International Astronomical Union 2013

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