首页|Single-pulse Emissions of PSRs J1611-0114 and J1617+1123

Single-pulse Emissions of PSRs J1611-0114 and J1617+1123

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In this paper,the emissions from two pulsars,PSRs J1611-0114 and J1617+1123,were investigated using the Five-hundred-meter Aperture Spherical radio Telescope operating at a central frequency of 1250 MHz.The average pulse profile of PSR J1611-0114 shows two components,the first of which is relatively weak in intensity.The two-dimensional pulse stack exhibits an obvious nulling phenomenon,with an estimated nulling fraction of 40.1％±5.4％.The durations of the nulls and bursts are consistent with power-law distributions,and no periodic nulling phenomenon is found.The results from PSR J1617+1123 demonstrate that the average pulse profile is composed of four components.The peak intensity of the fourth component varies significantly,causing an unstable integrated profile.In addition,the modulation characteristics of J1611-0114 and J1617+1123 were studied by analyzing the modulation index,longitude resolved fluctuation spectrum and two-dimensional fluctuation spectrum using the software PSRSALSA.It was found that the two pulsars exhibit intensity modulation.In particular,J1611-0114 displays even-odd modulation,with the modulation period of approximately two pulses.The modulation period of J1617+1123 is relatively broad.There is an obvious subpulse drift phenomenon,and the value of P2 is～0.125c/P0,corresponding to 12 pulse longitude bins,and the drift rate(P2/P3)is about 0.29.

stars:neutron(stars:)pulsars:general(stars:)pulsars:individual(PSRs J1611-0114 and J1617+1123)

Shifang Liu、Zhigang Wen、Shuangqiang Wang、Feifei Kou、Wenming Yan、Jianping Yuan、Qingdong Wu、De Zhao、Chenchen Miao、Na Wan、Menao Xue、Di Li、Pei Wan、Shennan Sun、Weiwei Zhu、Juntao Bai

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School of Physics and Technology,Xinjiang University,Urumqi 830046,China

Xinjiang Astronomical Observatory Chinese Academy of Sciences U0rumqi 830046,China

University of Chinese Academy of Sciences,Beijing 100049,China

Xinjiang Key Laboratory of Radio Astrophysics,Urumqi 830046,China

National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

Department of Astronomy,Tsinghua University,Beijing 100084,China

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2024

10.1088/1674-4527/ad7fb6

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子：0.406
ISSN：1674-4527
年,卷(期)：2024.24(11)