VLBA Measurement of Nine Pulsar Parallaxes
VLBA Measurement of Nine Pulsar Parallaxes
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DOI：
10.1086/340098
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发表时间：
2002-04
期刊：
影响因子：
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通讯作者：
W. Brisken;J. Benson;W. Goss;S. Thorsett
中科院分区：
文献类型：
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作者：
W. Brisken;J. Benson;W. Goss;S. Thorsett
我们使用 NRAO 超长基线阵列通过视差测量确定了到九颗脉冲星的距离，通过精确的距离测量将脉冲星的数量增加了一倍。宽带相位建模用于校准电离层不同的色散效应，并从相位参考 VLBI 数据中消除由此产生的相位误差。由此产生的视差的典型精度为 100 微角秒或更好，距离测量精度可达 2%。我们还报告了这些脉冲星的新自行测量，精确到 400 µ as yr − 1 或更好。
We determined the distances to nine pulsars by parallax measurements using the NRAO Very Long Baseline Array, doubling the number of pulsars with accurate distance measurements. Broadband phase modeling was used to calibrate the varying dispersive effects of the ionosphere and remove the resulting phase errors from the phase-referenced VLBI data. The resulting parallaxes have a typ-ical accuracy of 100 microarcseconds or better, yielding distances measurements as accurate as 2%. We also report new proper motion measurements of these pulsars, accurate to 400 µ as yr − 1 or better.