中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Variations in pulsar subpulse drift rate

文献类型:期刊论文

作者Yuen, R.1,2,3
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2019-06-01
卷号486期号:2页码:2011-2019
ISSN号0035-8711
关键词radiation mechanisms: non-thermal pulsar: general
DOI10.1093/mnras/stz951
通讯作者Yuen, R.(ryuen@xao.ac.cn)
英文摘要We explore changes in subpulse drift rate in a model for pulsar magnetospheres of multiple magnetospheric states incorporating the apparent motion of the visible point. In this model, subpulse drift rate is determined by the relative motion between corotation and the plasma flow in a magnetospheric state, designated by the parameter y, as seen by an observer, and switching in drift mode corresponds to an abrupt jump in y causing variation in the plasma flow. We demonstrate that changes in drift rate occur both as functions of pulsar rotational phase and y, and that subpulses may appear stationary even when the plasma flow is not in corotation with the star. Our results suggest that pulsars with multiple subpulse drift modes may constitute a much larger population. We consider the different subpulse drift rates in PSRs J1822 - 2256, B0809+74 and B1918+19 as examples to illustrate that each drift mode corresponds to a unique magnetospheric state, and we discuss its implication in relation to the charge density as revealed by the value of y.
WOS关键词SUB-PULSES ; EMISSION ; MODULATION ; POLARIZATION ; INSTABILITY ; RADIATION ; GEOMETRY ; MODEL
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000474899400041
源URL[http://libir.pmo.ac.cn/handle/332002/27347]  
专题中国科学院紫金山天文台
通讯作者Yuen, R.
作者单位1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
3.Univ Sydney, Sch Phys, SIfA, Sydney, NSW 2006, Australia
推荐引用方式
GB/T 7714
Yuen, R.. Variations in pulsar subpulse drift rate[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,486(2):2011-2019.
APA Yuen, R..(2019).Variations in pulsar subpulse drift rate.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,486(2),2011-2019.
MLA Yuen, R.."Variations in pulsar subpulse drift rate".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 486.2(2019):2011-2019.

入库方式: OAI收割

来源:紫金山天文台

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。