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The geometry of the double-pulsar system J0737-3039 from systematic intensity variations

机译:来自系统强度变化的双脉冲星系统J0737-3039的几何形状

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摘要

Two pulsars (PSR J0737 - 3039A(1) and B-2) were recently discovered in highly relativistic orbits around one another. The system contains a rapidly rotating pulsar with a spin period of 22.7 ms and a slow companion with a spin period of 2.77 s, referred to here as 'A' and 'B', respectively. A unique property of the system is that the pulsed radio flux from B increases systematically by almost two orders of magnitude during two short portions of its orbit(2). Here we report a geometrical model of the system that simultaneously explains the intensity variations of B and provides constraints on the spin axis orientation and emission geometry of A. Our model assumes that B's pulsed radio flux increases when illuminated by emission from A. We predict that A's pulse profile will evolve considerably over the next several years owing to geodetic precession until it disappears entirely in 15 - 20 years.
机译:最近在彼此高度相关的轨道上发现了两个脉冲星(PSR J0737-3039A(1)和B-2)。该系统包含一个自旋周期为22.7 ms的快速旋转脉冲星和一个自旋周期为2.77 s的慢伴星,此处分别称为“ A”和“ B”。该系统的独特之处在于,来自B的脉冲无线电通量在其轨道的两个短时间内系统地增加了几乎两个数量级(2)。在这里,我们报告了一个系统的几何模型,该模型同时解释了B的强度变化,并限制了A的自旋轴方向和发射几何形状。我们的模型假设B的脉冲无线电通量在被A的发射照亮时会增加。由于大地运动,A的脉动剖面将在未来几年中发生很大变化,直到15-20年内完全消失。

著录项

  • 来源
    《Nature》 |2004年第6986期|p.919-921|共3页
  • 作者

    Jenet FA; Ransom SM;

  • 作者单位

    Jenet FA, CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

    Precession; B1913+16;

    机译:进动;B1913 + 16;

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