On the time delay in binary systems

Abstract

The aim of this paper is to study the time delay on electromagnetic signals propagating across a binary stellar system. We focus on the antisymmetric gravitomagnetic contribution due to the angular momentum of one of the stars of the pair. Considering a pulsar as the source of the signals, the effect would be manifest both in the arrival times of the pulses and in the frequency shift of their Fourier spectra. We derive the appropriate formulas and we discuss the influence of different configurations on the observability of gravitomagnetic effects. We argue that the recently discovered PSR J0737-3039 binary system does not permit the detection of the effects because of the large size of the eclipsed region.

7 pages, 2 eps figures, RevTex, to appear in Physical Review D

References in corpus (6)

• A Double-Pulsar System - A Rare Laboratory for Relativistic Gravity and Plasma Physics
• Testing General Relativity with Pulsar Timing
• On the nature of eclipses in binary pulsar J0737-3039
• Green Bank Telescope Observations of the Eclipse of Pulsar "A" in the Double Pulsar Binary PSR J0737-3039
• Proposed New Test of Spin Effects in General Relativity
• Gravitomagnetic measurement of the angular momentum of celestial bodies

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• Gravitomagnetism and the Speed of Gravity
• Effects of Gravitational Lensing and Companion Motion on the Binary Pulsar Timing
• Gravitational Faraday Rotation in Binary Pulsar Systems
• A post-Keplerian parameter to test gravito-magnetic effects in binary pulsar systems
• Strong Field of Binary Systems And Its Effects On Pulsar Arrival Times