Ultra-wide Bandwidth Observations of 19 Pulsars with Parkes Telescope

作     者：Zu-Rong Zhou Jing-Bo Wang Na Wang George Hobbs Shuang-Qiang Wang Zu-Rong Zhou;Jing-Bo Wang;Na Wang;George Hobbs;Shuang-Qiang Wang

作者机构：Xinjiang Astronomical ObservatoryChinese Academy of SciencesUrumqiXinjiang 830011China University of Chinese Academy of Sciences19A Yuquan RoadBeijing 100049China Xinjiang Key Laboratory of Radio Astrophysics150 Science1-StreetUrumqiXinjiang 830011China Key Lab of Radio AstronomyChinese Academy of SciencesBeijing 100101China CSIRO Astronomy and Space SciencePO Box 76EppingNSW 1710Australia CAS Key Laboratory of FASTNAOCChinese Academy of SciencesBeijing 100101China 

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

年 卷 期：2022年第22卷第8期

页      面：6-22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：the National Natural Science Foundation of China(Grant No.NSFC12041304) National SKA Program of China(No.2020SKA0120100) Youth Innovation Promotion Association of Chinese Academy of Sciences National Key Research and Development Program of China(No.2017YFA0402602) the CAS Jianzhihua project Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China 

主　　题：(stars:)pulsars:general stars:neutron methods:data analysis 

摘      要：Flux densities are basic observation parameters to describe *** the most updated pulsar catalog,24%of the listed radio pulsars have no flux density measurement at any ***,we report the first flux density measurements,spectral indices,pulse profiles,and correlations of the spectral index with pulsar parameters for 19 pulsars employing the Ultra-Wideband Low receiver system installed on the Parkes radio *** results for spectral indices of 17 pulsars are in the range between-0.6 *** polarization profiles of thirteen pulsars are *** is a moderate correlation between the spectral index and spin *** most pulsars detected,the signal-to-noise ratio of pulse profile is not high,so DM,Faraday rotation measure,and polarization cannot be determined ***-nine pulsars were not detected in our *** discuss the possible explanations for why these pulsars were not detected.