Optical Polarimetry of the Crab and Vela Pulsars

被引：0
|
作者：
Moran, Paul [1 ]
Shearer, Andy [1 ]
Mignani, Roberto [2 ,3 ]
机构：
[1] Natl Univ Ireland Galway, Ctr Astron, Galway, Ireland
[2] MSSL UCL, Dorking RH5 6NT, Surrey, England
[3] Univ Zielona Gora, Inst Astron, PL-65265 Zielona Gora, Poland
来源：
ELECTROMAGNETIC RADIATION FROM PULSARS AND MAGNETARS | 2012年 / 466卷
关键词：
SYNCHROTRON NEBULA; PROPER MOTION; POLARIZATION; EMISSION; HST;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Time-resolved polarisation measurements of pulsars offer a unique insight into the geometry of the pulsar emission region. Such measurements provide observational constraints on the different models proposed for the pulsar emission mechanism. Optical polarisation data sets of the Crab and Vela nebulae were obtained from MAST. The data composes of a series of observations of each nebula taken with the HST/ACS. Polarisation vector maps of each nebula were produced using the polarimetry software IMPOL. Lastly, the degree of linear polarisation and the position angle of each pulsars' integrated pulse beam were measured. For the Crab pulsar: P.D.=4.90 +/- 0.33% and P.A.=105.97 +/- 2.00 degrees. Synchrotron knot: P.D.=61.70 +/- 0.72% and P.A.=126.86 +/- 0.23 degrees. Vela pulsar: P.D.=9.23 +/- 1.03% and P.A.=165.92 +/- 3.61 degrees.
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页码：215 / +
页数：2
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