FAST Pulsar *** Profiles of 682 Pulsars

作     者：P.F.Wang J.L.Han J.Xu C.Wang Y.Yan W.C.Jing W.Q.Su D.J.Zhou T.Wang P.F.Wang;J.L.Han;J.Xu;C.Wang;Y.Yan;W.C.Jing;W.Q Su;D.J.Zhou;T.Wang

作者机构：National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of AstronomyUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2023年第23卷第10期

页      面：71-175页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the National Natural Science Foundation of China(NSFC,grant Nos.11988101 and 11833009),supported by the National Natural Science Foundation of China(NSFC,grant No.U2031115) supported by the National Key R&D Program of China(No.2021YFA1600401 and 2021YFA1600400) National Natural Science Foundation of China(NSFC,grant Nos.11873058 and 12133004) the National SKA program of China(No.2020SKA0120200) 

主　　题：polarization (stars:)pulsars:general astronomical databases:miscellaneous 

摘      要：Pulsar polarization profiles form a very basic database for understanding the emission processes in a pulsar *** careful polarization calibration of the 19-beam L-band receiver and verification of beamoffset observation results,we obtain polarization profiles of 682 pulsars from observations by the Five-hundredmeter Aperture Spherical radio Telescope(FAST)duringthe Galactic Plane Pulsar Snapshot survey and other normal FAST *** them,polarization profiles of about 460 pulsars are observed for the first *** profiles exhibit diverse *** pulsars have a polarization position angle curve with a good S-shaped swing,some with orthogonal modes;some have components with highly linearly polarized components or strong circularly polarized components;some have a very wide profile,coming from an aligned rotator,and some have an interpulse from a perpendicular rotator;some wide profiles are caused by interstellar *** derive geometric parameters for 190 pulsars from the S-shaped position angle curves or with orthogonal *** find that the linear and circular polarization or the widths of pulse profiles have various frequency *** with a large fraction of linear polarization are more likely to have a large Edot.