PSR J1926-0652: A Pulsar with Interesting Emission Properties Discovered at FAST

doi:10.3847/1538-4357/ab1849

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	PSR J1926-0652: A Pulsar with Interesting Emission Properties Discovered at FAST
	Zhang,Lei 1,2,3; Li,Di 1,2,4; Hobbs,George 1,3; Agar,Crispin H.5; Manchester,Richard N.3; Weltevrede,Patrick 5; Coles,William A.6; Wang,Pei 1; Zhu,Weiwei 1; Wen,Zhigang 7
刊名	The Astrophysical Journal
	2019-05-24
卷号	877 期号:1
关键词	pulsars: individual (PSR J1926-0652)
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab1849
英文摘要	Abstract We describe PSR?J1926?0652, a pulsar recently discovered with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Using sensitive single-pulse detections from FAST and long-term timing observations from the Parkes 64 m radio telescope, we probed phenomena on both long and short timescales. The FAST observations covered a wide frequency range from 270 to 800 MHz, enabling individual pulses to be studied in detail. The pulsar exhibits at least four profile components, short-term nulling lasting from 4 to 450 pulses, complex subpulse drifting behaviors and intermittency on scales of tens of minutes. While the average band spacing P3 is relatively constant across different bursts and components, significant variations in the separation of adjacent bands are seen, especially near the beginning and end of a burst. Band shapes and slopes are quite variable, especially for the trailing components and for the shorter bursts. We show that for each burst the last detectable pulse prior to emission ceasing has different properties compared to other pulses. These complexities pose challenges for the classic carousel-type models.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-877-1-AB1849
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/26433]
专题	中国科学院国家天文台
作者单位	1.National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100101, People’s Republic of China leizhang996@nao.cas.cn, dili@nao.cas.cn, George.Hobbs@csiro.au 2.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 3.CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW 1710, Australia 4.FAST Collabration, CAS Key Laboratory of FAST, NAOC, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China 5.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK 6.ECE Department, University of California at San Diego, La Jolla, CA, USA 7.Xinjiang Astronomical Observatory, 150, Science-1 Street, Urumqi, 830011 Xinjiang, People’s Republic of China 8.Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany 9.Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guizhou Normal University, Guiyang 550001, People’s Republic of China 10.School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, People’s Republic of China
推荐引用方式 GB/T 7714	Zhang,Lei,Li,Di,Hobbs,George,et al. PSR J1926-0652: A Pulsar with Interesting Emission Properties Discovered at FAST[J]. The Astrophysical Journal,2019,877(1).
APA	Zhang,Lei.,Li,Di.,Hobbs,George.,Agar,Crispin H..,Manchester,Richard N..,...&Zhu,Yan.(2019).PSR J1926-0652: A Pulsar with Interesting Emission Properties Discovered at FAST.The Astrophysical Journal,877(1).
MLA	Zhang,Lei,et al."PSR J1926-0652: A Pulsar with Interesting Emission Properties Discovered at FAST".The Astrophysical Journal 877.1(2019).