A Single-pulse Study of PSR J1022+1001 Using the FAST Radio Telescope
Feng,Yi1,2,3; Hobbs,G.3; Li,D.1,2,4; Dai,S.3; Zhu,W. W.1; Yue,Y. L.1; Wang,P.1; Zhang,S.-B.2,3,5; Qian,L.1; Zhang,L.1,2,3; Wang,S. Q.6; Miao,C. C.1,2; Yuan,M.1,2; Zhang,Y.-K.1,2
Source PublicationThe Astrophysical Journal
AbstractAbstract Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we have recorded ~105 single pulses from PSR J1022+1001. We studied the polarization properties, their energy distribution, and their times of arrival. This is only possible with the high sensitivity available using FAST. There is no indication that PSR J1022+1001 exhibits giant pulse, nulling, or traditional mode changing phenomena. The energy in the leading and trailing components of the integrated profile is shown to be correlated. The degree of both linear and circular polarization increases with the pulse flux density for individual pulses. Our data indicates that pulse jitter leads to an excess noise in the timing residuals of 67 ns when scaled to one hour, which is consistent with Liu et al. We have unsuccessfully trialed various methods to improve timing precision through the selection of specific single pulses. Our work demonstrates that FAST can detect individual pulses from pulsars that are observed in order to detect and study gravitational waves. This capability enables detailed studies, and parameterization, of the noise processes that affect the sensitivity of a pulsar timing array.
KeywordPulsars Astronomy data analysis
WOS IDIOP:0004-637X-908-1-abd326
PublisherThe American Astronomical Society
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Document Type期刊论文
Corresponding AuthorFeng,Yi
Affiliation1.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China;
2.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
3.CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710, Australia
4.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban 4000, South Africa
5.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People’s Republic of China
6.Xinjiang Astronomical Observatory, 150, Science-1 Street, Urumqi, 830011 Xinjiang, People’s Republic of China
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Feng,Yi,Hobbs,G.,Li,D.,et al. A Single-pulse Study of PSR J1022+1001 Using the FAST Radio Telescope[J]. The Astrophysical Journal,2021,908(1).
APA Feng,Yi.,Hobbs,G..,Li,D..,Dai,S..,Zhu,W. W..,...&Zhang,Y.-K..(2021).A Single-pulse Study of PSR J1022+1001 Using the FAST Radio Telescope.The Astrophysical Journal,908(1).
MLA Feng,Yi,et al."A Single-pulse Study of PSR J1022+1001 Using the FAST Radio Telescope".The Astrophysical Journal 908.1(2021).
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