Discovery of Extended Faraday Rotation Compatible with Spiral Structure in an Intervening Galaxy at Z = 0.395: New Observations of PKS 1229-021
Discovery of Extended Faraday Rotation Compatible with Spiral Structure in an Intervening Galaxy at Z = 0.395: New Observations of PKS 1229-021
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发现 Z = 0.395 时与介入星系中的螺旋结构兼容的扩展法拉第旋转：PKS 1229-021 的新观测
DOI：
10.1086/171104
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
E. Zukowski
中科院分区：
文献类型：
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作者：
P. Kronberg;J. Perry;E. Zukowski
本文用旋光法对衰减的Ly-α和21 cm吸收线类星体PKS1229-021(z=1.038)的7个频率进行了详细的标绘。它有一射电喷流，其旋转测量分布在0“.46处显示出明显而强烈的”振荡“，其长度为∼35h 65kpc，吸收线红移为0.395。这个新的扩展的干涉探测器与光学吸收光谱相结合，由布里格斯和他的同事们很好地研究表明，z=0.395的干涉者是一个“双对称磁场”螺旋星系，可能类似于M81
The damped Lyα and 21 cm absorption-line quasar PKS 1229-021 (z=1.038) has been mapped in detail with the VLA at seven frequencies, with polarimetry. It has a radio jet, whose rotation measure distribution at 0″.46 shows a clear and strong «oscillation» over its length, which is ∼35h 65 kpc at the absorption-line redshift of 0.395. This new, extended, intervenor probe combined with the optical absorption spectrum, well studied by Briggs and coworkers, suggests that the intervenor at z=0.395 is a «bisymmetric magnetic field» spiral galaxy, possibly similar to M81