The mode switching of PSR B2020+28

CORC > 新疆天文台 > 研究单元未命名 > 射电天文研究室 > 脉冲星研究团组

	The mode switching of PSR B2020+28
	Wen, Z. G.1,2 ; Wang, N.1,3 ; Yan, W. M.1,3 ; Yuan, J. P.1,3 ; Liu, Z. Y.1 ; Chen, M. Z.1 ; Chen, J. L.1,4
刊名	ASTROPHYSICS AND SPACE SCIENCE
	2016-08-01
卷号	361 期号:8
关键词	Stars: neutron-pulsars Individual Polarization Mode switching PSR B2020+28
ISSN号	0004-640X
英文摘要	This paper reports on polarimetric radiation properties based on the switching modes of normal PSR B2020+28 by analyzing the data acquired from the Nanshan 25-m radio telescope at 1556 MHz. With nearly 8 hours quasi-continuous observation, the data presented some striking and updated phenomena. The change of relative intensity between the leading and trailing components is the predominant feature of mode switching. The intensity ratio between the leading and trailing components are measured for the individual profiles averaged over 30 seconds. It is found that there is an excess of high ratios over the normal distribution, which indicates that two modes exist in the pulsar. The distribution of abnormal mode has a narrower width indicating that the abnormal mode is more stable than the normal mode. A total of 76 mode switching events are detected in our data. It spends 89 % in the normal mode and 11 % in the abnormal mode. The intrinsic distributions of mode timescales are constrained with power-law distributions. The significant difference in the index of the duration distribution between normal and abnormal modes possibly indicates that the timescale for the abnormal mode to get stable is shorter than that for the normal mode. The frequent switching between both modes may indicate that the oscillations between different magnetospheric states are rapid.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	PULSAR RADIO-EMISSION ; POLARIZATION OBSERVATIONS ; STATISTICAL SUMMARIES ; LINEAR-POLARIZATION ; ORTHOGONAL MODES ; EMPIRICAL-THEORY ; MHZ ; DISCOVERY ; RADIATION ; GLITCH
收录类别	SCI
语种	英语
WOS记录号	WOS:000381114700016
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/1404]
专题	脉冲星研究团组新疆天文台_射电天文研究室新疆天文台_其它
作者单位	1.Chinese Acad Sci, XAO, Urumqi 830011, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China 4.Yuncheng Univ, Dept Phys & Elect Engn, Yuncheng 044000, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Wen, Z. G.,Wang, N.,Yan, W. M.,et al. The mode switching of PSR B2020+28[J]. ASTROPHYSICS AND SPACE SCIENCE,2016,361(8).
APA	Wen, Z. G..,Wang, N..,Yan, W. M..,Yuan, J. P..,Liu, Z. Y..,...&Chen, J. L..(2016).The mode switching of PSR B2020+28.ASTROPHYSICS AND SPACE SCIENCE,361(8).
MLA	Wen, Z. G.,et al."The mode switching of PSR B2020+28".ASTROPHYSICS AND SPACE SCIENCE 361.8(2016).