Radiation properties of extreme nulling pulsar J1502-5653

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	Radiation properties of extreme nulling pulsar J1502-5653
	Li, J.1,2 ; Esamdin, A.1 ; Manchester, R. N.3; Qian, M. F.1,2 ; Niu, H. B.1,2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2012-09-01
卷号	425 期号:2 页码:1294-1298
关键词	stars: neutron pulsars: individual: PSR J1502-5653
ISSN号	0035-8711
通讯作者	aliyi@xao.ac.cn
英文摘要	We report on radiation properties of extreme nulling pulsar J1502-5653 by analysing the data acquired from the Parkes 64-m telescope at 1374?MHz. The radio emission from this pulsar exhibits sequences of several tens to several hundred consecutive burst pulses, separated by null pulses, and the appearance of the emission seems quasi-periodic. The null fraction from the data is estimated to be 93.6 per cent. No emission is detected in the integrated profile of all null pulses. Systematic modulations of pulse intensity and phase are found at the beginning of burst pulse sequences just after null. The intensity usually rises to a maximum for the first few pulses, then declines exponentially afterwards, and becomes stable after a few tens of pulse periods. The peak phase appears at later longitudes for the first pulse, then drifts to earlier longitudes rapidly, and then systematic drifting gradually vanishes, while the intensity becomes stable. In this pulsar, the intensity variation and phase modulation of pulses are correlated in a short duration after the emission starts following a null. Observed properties of the pulsar are compared with other nulling pulsars published previously, and the possible explanation for phase modulation is discussed.
学科主题	致密天体、高能和基础物理
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	RADIO PULSARS ; PERIODIC NULLS ; DISCOVERY ; DRIFT
收录类别	SCI
资助信息	National Natural Science Foundation of China (NSFC) under No.10973026
原文出处	http://mnras.oxfordjournals.org/
语种	英语
WOS记录号	WOS:000307888300035
公开日期	2014-12-12
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/406]
专题	脉冲星研究团组新疆天文台_光学天文与技术应用研究室新疆天文台_射电天文研究室研究生
作者单位	1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, Epping, NSW 1710, Australia
推荐引用方式 GB/T 7714	Li, J.,Esamdin, A.,Manchester, R. N.,et al. Radiation properties of extreme nulling pulsar J1502-5653[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2012,425(2):1294-1298.
APA	Li, J.,Esamdin, A.,Manchester, R. N.,Qian, M. F.,&Niu, H. B..(2012).Radiation properties of extreme nulling pulsar J1502-5653.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,425(2),1294-1298.
MLA	Li, J.,et al."Radiation properties of extreme nulling pulsar J1502-5653".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 425.2(2012):1294-1298.