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Kou, F F; Yuan, J P; Wang, N; Yan, W M; Dang, S J
Monthly notices of the Royal Astronomical Society. Letters, 07/2018, Letnik: 478, Številka: 1Journal Article
Abstract We presented timing results of PSR B2035+36 using ∼9-yr observations with the Nanshan 25-m radio telescope. PSR B2035+36 was reported to exhibit significant changes in pulse profile correlated with spin-down state variations. We found that the pulsar underwent a glitch with a jump in frequency of $\Delta {\nu }\sim 12.4(5)\, \rm nHz$ around MJD 52950. Unusually, the spin-down rate increased persistently over 800 d after the glitch, and the average spin-down rate post-glitch was about $9.6 \, {per\,cent}$ larger than that pre-glitch. After the glitch activity, the pulse profile became narrower and the pulsar began to switch between two emission modes, with pulse widths ($W_{\ 50 \rm mean}$) of 8.5(7)° and 3.7(3)°, respectively. In addition to that, the relatively narrow pulse profile gradually became dominant. All of the observations indicate that there should be a connection between magnetospheric behaviour and glitch activity. We discuss one possibility of magnetosphere fluctuation triggered by the glitch event.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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