S. M. Ransom et al 2004 ApJ 609 L71 doi:10.1086/422911
Green Bank Telescope Measurement of the Systemic Velocity of the Double Pulsar Binary J0737–3039 and Implications for Its Formation
FREES. M. Ransom1,2, V. M. Kaspi1,2,3, R. Ramachandran4, P. Demorest4, D. C. Backer4, E. D. Pfahl5, F. D. Ghigo6 and D. L. Kaplan7
Show affiliationsWe report on the measurement at 820 and 1400 MHz of the orbital modulation of the diffractive scintillation timescale from pulsar A in the double-pulsar system J0737-3039 using the Green Bank Telescope. With fits to this modulation, we determine the systemic velocity in the plane of the sky to be VISS 
140.9 ± 6.2 km s-1. The parallel and perpendicular components of this velocity with respect to the line of nodes of the pulsar's orbit are Vplane 96.0 ± 3.7 km s-1 and Vperp 103.1 ± 7.7 km s-1, respectively. The large Vperp implies that pulsar B was born with a kick speed of 
100 km s-1. Future Very Long Baseline Array determinations of the angular proper motion in conjunction with improved VISS measurements should provide a precise distance to the system. Using high-precision timing data and the VISS model, we estimate a best-fit orbital inclination of i = 88
7 ± 09.
- Subject headings
binaries: general; ISM: general; pulsars: general; pulsars: individual (PSR J0737−3039A, PSR J0737−3039B); stars: kinematics
- Dates
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Issue 2 (2004 July 10)
Received 2004 April 8, accepted for publication 2004 June 1
Published 2004 June 14
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Green Bank Telescope Measurement of the Systemic Velocity of the Double Pulsar Binary J0737–3039 and Implications for Its Formation
S. M. Ransom et al 2004 ApJ 609 L71
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