首页|The Bright Single Pulse Emission from PSR B1 133+16

The Bright Single Pulse Emission from PSR B1 133+16

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We have conducted a comprehensive investigation into the bright single pulse emission from PSR B1133+16 using the Giant Metrewave Radio Telescope.High time resolution data(61 μs)were obtained at a center frequency of 322 MHz with a bandwidth of 32 MHz over a continuous observation period of 7.45 hr.A total of 1082 bright pulses were sporadically detected with peak flux densities ranging from 10 to 23 times stronger than the average pulse profile.However,no giant pulse-like emission with a relative pulse energy larger than 10 and extremely short duration was detected,indicating that these bright pulses cannot be categorized as giant pulse emission.The majority of these bright pulses are concentrated in pulse phases at both the leading and trailing windows of the average pulse profile,with an occurrence ratio of approximately 2.74.The pulse energy distribution for all individual pulses can be described by a combination of two Gaussian components and a cutoff power-law with an index of α=-3.2.An updated nulling fraction of 15.35％±0.45％ was determined from the energy distribution.The emission of individual pulses follows a log-normal distribution in peak flux density ratio.It is imperative that regular phase drifting in bright pulse sequence is identified in both the leading and trailing components for the first time.Possible physical mechanisms are discussed in detail to provide insights into these observations.

(stars:)pulsars:general(stars:)pulsars:individual(PSR B1133+16)methods:observationalmethods:data analysis

Jun Tan、Zhi-Gang Wen、Zhen Wang、Xue-Feng Duan、Hong-Guang Wang、Na Wang、Vishal Gajjar、Jian-Ping Yuan、Rai Yuen、Wen-Ming Yan、Jian-Ling Chen、Wei Han、Hui Wang、Cheng-Bing Lyu、Ai-Jun Dong

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Maths and Information Technology School,Yuncheng University,Yuncheng 044000,China

Xinjiang Astronomical Observatory,Chinese Academy of Sciences,Urumqi 830011,China

Xinjiang Key Laboratory of Radio Astrophysics,Urumqi 830011,China

School of Physics and Materials Science,Guangzhou University,Guangzhou 510006,China

Space Science Laboratory,University of California,Berkeley 94710,USA

Department of Physics and Electronic Engineering,Yuncheng University,Yuncheng 044000,China

School of Physics and Electronic Science,Guizhou Normal University,Guiyang 550025,China

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open project of the Key Laboratory in Xinjiang Uygur Autonomous Region of ChinaMajor Science and Technology Program of Xinjiang Uygur Autonomous RegionNational Key Research and Development Program of ChinaNational Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)Chinese Academy of Sciences Foundation of the young scholars of westernNational SKA Program of ChinaTianshan Talent Training Program2021 project Xinjiang Uygur autonomous region of China for Tianshan elitesYouth Innovation Promotion Association of CASNatural Science Foundation of Shanxi ProvinceScientific and Technological Innovation Programs of Higher Education Institutions in ShanxiCAS Jianzhihua project2018 project of Xinjiang Uygur autonomous region of China for flexibly fetching in upscale talentsCAS Light of West China Program

2023D040582022A03013-12022YFC2205203123030531228810211988101U18381091204130412041301118730801213300412203094U16311062020-XBQNXZ-0192020SKA01201002023TSYCCX01002023069202103021230832021L4802019-XBQNXZ-B-019

2024

10.1088/1674-4527/ad3789

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(4)