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Single-pulse observations of the Galactic centre magnetar PSR J1745-2900 at 3.1 GHz
Yan, W. M.1,2,3; Wang, N.1,2,3; Manchester, R. N.4; Wen, Z. G.1,2,3; Yuan, J. P.1,2,3
2018-05-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume476Issue:3Pages:3677-3687
Corresponding AuthorYan, W. M.(yanwm@xao.ac.cn)
AbstractWe report on single-pulse observations of the Galactic centre magnetar PSR J1745-2900 that were made using the Parkes 64-m radio telescope with a central frequency of 3.1 GHz at five observing epochs between 2013 July and August. The shape of the integrated pulse profiles was relatively stable across the five observations, indicating that the pulsar was in a stable state between MJDs 56475 and 56514. This extends the known stable state of this pulsar to 6.8 months. Short-term pulse shape variations were also detected. It is shown that this pulsar switches between two emission modes frequently and that the typical duration of each mode is about 10 min. No giant pulses or subpulse drifting were observed. Apparent nulls in the pulse emission were detected on MJD 56500. Although there are many differences between the radio emissions of magnetars and normal radio pulsars, they also share some properties. The detection of mode changing and pulse nulling in PSR J1745-2900 suggests that the basic radio emission process for magnetars and normal pulsars is the same.
Keywordstars magnetars stars neutron pulsars general pulsars individual PSR J1745-2900
DOI10.1093/mnras/sty470
WOS KeywordPOLARIZED RADIO-EMISSION ; SOFT GAMMA-REPEATERS ; NEUTRON-STARS ; MODULATION PROPERTIES ; SGR J1745-2900 ; X-RAY ; TELESCOPE ; J1810-197 ; SPECTRUM ; FIELD
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000430944100057
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22004
Collection中国科学院紫金山天文台
Corresponding AuthorYan, W. M.
Affiliation1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci,1 St, Urumqi 830011, Xinjiang, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
3.Xinjiang Key Lab Radio Astrophys, 150 Sci,1 St, Urumqi 830011, Xinjiang, Peoples R China
4.Australia Telescope Natl Facil, CSIRO Astron & Space Sci, POB 76, Epping, NSW 1710, Australia
Recommended Citation
GB/T 7714
Yan, W. M.,Wang, N.,Manchester, R. N.,et al. Single-pulse observations of the Galactic centre magnetar PSR J1745-2900 at 3.1 GHz[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,476(3):3677-3687.
APA Yan, W. M.,Wang, N.,Manchester, R. N.,Wen, Z. G.,&Yuan, J. P..(2018).Single-pulse observations of the Galactic centre magnetar PSR J1745-2900 at 3.1 GHz.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,476(3),3677-3687.
MLA Yan, W. M.,et al."Single-pulse observations of the Galactic centre magnetar PSR J1745-2900 at 3.1 GHz".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 476.3(2018):3677-3687.
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