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Polarization and integrated profiles
The polarization of integrated pulsar profiles offer an insight into the emission processes going on in the magnetosphere and give a handle on the pulsar geometry. Phase analysis of the profile gives you the longitudonal structure in the beam and multi-frequency analysis can give the vertical structure of the magnetosphere. All this sounds great but in practice this mapping is difficult to achieve for a variety of reasons.
Projects I have been doing include high frequency observations of southern pulsars (at 3.1 GHz; Karastergiou, Johnston and Manchester 2005, and at 8.4 GHz; Johnston, Karastergiou and Willett 2006) and some neat observations of young pulsars (Johnston and Weisberg 2006) where we came to some bold conclusions about their profiles. Finally, we have shown that the rotation axis and the velocity vectors of pulsars are aligned (Johnston et al. 2005) with the implications that has for their birth processes.
In 2006, I embarked on a mega-campaign to observe more than 200 pulsars at at least 3 different frequencies. The high time resolution and absolute polarization position angles will make this a fascinating data set to mine. Watch this space.
The polarization of integrated pulsar profiles offer an insight into the emission processes going on in the magnetosphere and give a handle on the pulsar geometry. Phase analysis of the profile gives you the longitudonal structure in the beam and multi-frequency analysis can give the vertical structure of the magnetosphere. All this sounds great but in practice this mapping is difficult to achieve for a variety of reasons.
Projects I have been doing include high frequency observations of southern pulsars (at 3.1 GHz; Karastergiou, Johnston and Manchester 2005, and at 8.4 GHz; Johnston, Karastergiou and Willett 2006) and some neat observations of young pulsars (Johnston and Weisberg 2006) where we came to some bold conclusions about their profiles. Finally, we have shown that the rotation axis and the velocity vectors of pulsars are aligned (Johnston et al. 2005) with the implications that has for their birth processes.
In 2006, I embarked on a mega-campaign to observe more than 200 pulsars at at least 3 different frequencies. The high time resolution and absolute polarization position angles will make this a fascinating data set to mine. Watch this space.
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论文共 520 篇作者统计合作学者相似作者
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ASTROPHYSICAL JOURNALno. 2 (2024): 138
The Astrophysical Journal Lettersno. 1 (2024): L16
ASTRONOMY & ASTROPHYSICS (2024)
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETYno. 2 (2023): 3208-3219
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#Papers: 521
#Citation: 28138
H-Index: 88
G-Index: 143
Sociability: 8
Diversity: 2
Activity: 68
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