| Autor: |
Miao, X L, Zhu, W W, Kramer, M, Freire, P C C, Shao, L, Yuan, M, Meng, L Q, Wu, Z W, Miao, C C, Guo, Y J, Champion, D J, Fonseca, E, Yao, J M, Xue, M Y, Niu, J R, Hu, H, Zhang, C M |
| Předmět: |
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| Zdroj: |
Monthly Notices of the Royal Astronomical Society; Dec2023, Vol. 526 Issue 2, p2156-2166, 11p |
| Abstrakt: |
In our work, we analyse 5 × 104 single pulses from the recycled pulsar PSR J2222−0137 in one of its scintillation maxima observed by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). PSR J2222−0137 is one of the nearest and best studies of binary pulsars and a unique laboratory for testing gravitational theories. We report single pulses' energy distribution and polarization from the pulsar's main-pulse region. The single-pulse energy follows the lognormal distribution. We resolve a steep polarization swing, but at the current time resolution (|$64\ \mu {\rm s}$|), we find no evidence for the orthogonal jump in the main-pulse region, as has been suspected. We find a potential sub-pulse drifting period of |$P_{3} \sim 3.5 P$|. We analyse the jitter noise from different integrated numbers of pulses and find that its σj is |$270\pm {9}\ {\rm ns}$| for 1-h integration at 1.25 GHz. This result is useful for optimizing future timing campaigns with FAST or other radio telescopes. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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