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Investigating the multifrequency pulse profiles of PSRs B0329+54 and B1642-03 in an inverse Compton scattering model
Shang, Lun-Hua1,2; Lu, Ji-Guang3,4; Du, Yuan-Jie5; Hao LF(郝龙飞)6; Li, Di2; Lee, Ke-Jia7; Li, Bin8,9; Li, Li-Xin7; Qiao, Guo-Jun3; Shen, Zhi-Qiang8,9; Wang, De-Hua1,10; Wang M(汪敏)6; Wu, Xin-Ji3; Wu, Ya-Jun8,9; Xu, Ren-Xin3,4,7; Yue, You-Ling2; Yan, Zhen8,9; Zhi, Qi-Jun1,10; Zhao, Rong-Bing8,9; Zhao, Ru-Shuang8,9; Shang, Lun-Hua(Guizhou Normal Univ, Sch Phys & Elect Sci, 116 Baoshan Rd, Guiyang 550001, Peoples R China)
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2017-07-01
卷号468期号:4页码:4389-4398
DOI10.1093/mnras/stx815
产权排序第6完成单位
收录类别SCI
关键词Radiation Mechanisms: Non-thermal Stars: Magnetic Field Stars: Neutron Pulsars: Individual: Psr b0329+54 Pulsars: Individual: Psr B1642-03
摘要Emission geometries, including emission region heights, beam shapes and radius-to-frequency mapping, are important clues for pulsar radiation models. Multiband radio observations reveal this valuable information. In this paper, we study two bright pulsars, PSRs B0329+54 and B1642-03, and observe them at high frequencies: 2.5, 5 and 8 GHz. The newly acquired data, together with historical archives, provide an atlas of multifrequency profiles spanning from 100 MHz to 10 GHz. We study the frequency evolution of pulse profiles as well as radiation regions using these data. First, we fit the pulse profiles with Gaussian functions to determine the phase of each component, and then we calculate the radiation altitudes of different emission components and radiation regions. We find that the inverse Compton scattering (ICS) model can reproduce the radiation geometry of these two pulsars. However, for PSR B0329+54, the radiation can be generated in either an annular gap (AG) or a core gap (CG), while the radiation of PSR B1642-03 can only be generated in a CG. This difference is caused by the inclination angle and the impact angle of these two pulsars. The relationship between the beaming angle (the angle between the radiation direction and the magnetic axis) and the radiation altitude versus frequency is also presented by modelling the beam-frequency evolution in the ICS model. The multiband pulse profiles of these two pulsars can be described well by the ICS model combined with the CG and AG.
项目资助者Strategic Priority Research Programme of the Chinese Academy of Sciences(XDB23000000) ; National Natural Science Foundation of China(11565010, 11373011, 11225314, 11033008, 11165005, 11173046, 11403073, 11303069, 11173041) ; Science and Technology Innovation Talent Team((2015)4015) ; Training Programme for Excellent Young Talents(2011-29) ; High Level Creative Talents((2016)-4008) ; Innovation Team Foundation of the Education Department of Guizhou Province([2014]35) ; Natural Science Foundation of Shanghai(13ZR1464500) ; Scientific Programme of Shanghai Municipality(08DZ1160100) ; Knowledge Innovation Programme of CAS(KJCX1-YW-18) ; Strategic Priority Research Programme ; Emergence of Cosmological Structures of CAS(XDB09000000) ; Doctoral Starting Up Foundation of Guizhou Normal University ; Science and Technology Foundation of Guizhou Province(J[2015]2113, LH[2016]7226) ; Postgraduate Innovation Foundation of Guizhou Normal University(201527) ; fund of the 'Special Demonstration of Space Science' ; strategic Priority Research Programme of CAS(XDB23010200)
语种英语
学科领域天文学
文章类型Article
ISSN0035-8711
URL查看原文
WOS记录号WOS:000402819700049
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]GAMMA-RAY EMISSION ; MULTICOMPONENT GAUSSIAN FITS ; INNER ANNULAR GAP ; RADIO PULSARS ; WIDTH STATISTICS ; GEOMETRICAL ANALYSIS ; CURVATURE RADIATION ; INTEGRATED PROFILES ; MILLISECOND PULSARS ; HIGH-FREQUENCIES
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10089
专题射电天文研究组
通讯作者Shang, Lun-Hua(Guizhou Normal Univ, Sch Phys & Elect Sci, 116 Baoshan Rd, Guiyang 550001, Peoples R China)
作者单位1.School of Physics and Electronic Science, Guizhou Normal University, 116 Baoshan Road, Yunyan Distric, Guiyang 550001, China
2.National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
3.School of Physics, Peking University, 5 Yiheyuan Road, Haidian District, Beijing 100871, China
4.State Key Laboratory of Nuclear Science and Technology, Peking University, 5 Yiheyuan Road, Haidian District, Beijing 100871, China
5.Qian Xuesen Laboratory of Space Technology, 104 Youyi Road, Haidian District, Beijing 100094, China
6.Yunnan Astronomical Observatory, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650011, China
7.Kavil Institute for Astronomy and Astrophysics, Peking University, 5 Yiheyuan Road, Haidian District, Beijing 100871, China
8.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China
9.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China
10.Center of Astronomical Research and Education, NAOC·GZNU, 116 Baoshan Road, Yunyan Distric, Guiyang 550001, China
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Shang, Lun-Hua,Lu, Ji-Guang,Du, Yuan-Jie,et al. Investigating the multifrequency pulse profiles of PSRs B0329+54 and B1642-03 in an inverse Compton scattering model[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,468(4):4389-4398.
APA Shang, Lun-Hua.,Lu, Ji-Guang.,Du, Yuan-Jie.,Hao LF.,Li, Di.,...&Shang, Lun-Hua.(2017).Investigating the multifrequency pulse profiles of PSRs B0329+54 and B1642-03 in an inverse Compton scattering model.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,468(4),4389-4398.
MLA Shang, Lun-Hua,et al."Investigating the multifrequency pulse profiles of PSRs B0329+54 and B1642-03 in an inverse Compton scattering model".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 468.4(2017):4389-4398.
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