首页> 外文期刊>The Astrophysical journal >GREEN BANK TELESCOPE MEASUREMENT OF THE SYSTEMIC VELOCITY OF THE DOUBLE PULSAR BINARY J0737-3039 AND IMPLICATIONS FOR ITS FORMATION
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GREEN BANK TELESCOPE MEASUREMENT OF THE SYSTEMIC VELOCITY OF THE DOUBLE PULSAR BINARY J0737-3039 AND IMPLICATIONS FOR ITS FORMATION

机译:双脉冲二进制J0737-3039系统速度的绿色银行望远镜测量及其形成的意义

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摘要

We 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 V_(ISS) approx= 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 V_(plane) approx= 96.0 ± 3.7 km s~(-1) and V_(perp) approx= 103.1 ± 7.7 km s~(-1), respectively. The large V_(perp) implies that pulsar B was born with a kick speed of approx>100 km s~(-1). Future Very Long Baseline Array determinations of the angular proper motion in conjunction with improved V_(ISS) measurements should provide a precise distance to the system. Using high-precision timing data and the V_(ISS) model, we estimate a best-fit orbital inclination of i = 88.7° ± 0.9°.
机译:我们报告了使用格林班克望远镜在双脉冲星系统J0737-3039中从脉冲星A在820和1400 MHz处对绕射闪烁时标的轨道调制进行的测量。配合该调制,我们确定天空平面中的系统速度为V_(ISS)大约= 140.9±6.2 km s〜(-1)。该速度相对于脉冲星轨道的节点线的平行和垂直分量为V_(平面)大约= 96.0±3.7 km s〜(-1)和V_(perp)大约= 103.1±7.7 km s〜( -1)。较大的V_(perp)意味着脉冲星B诞生时的突跳速度约为100 km s〜(-1)。结合适当的V_(ISS)测量结果,对将来的超长基线阵列确定适当的角度运动应提供到系统的精确距离。使用高精度计时数据和V_(ISS)模型,我们估算出最合适的轨道倾角为i = 88.7°±0.9°。

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