Parkes observations for project P943 semester 2020APRS_01

We request observing time at the Parkes telescope for observing five millisecond pulsars\r\n- PSR J1120-3618, PSR J1207-5050, PSR J1536-4948, PSR J1646-2142 and PSR J1828+0625.\r\nThese MSPs were discovered in a survey of Fermi unidentified gamma-ray sources with the GMRT. \r\nRadio polarisation properties of these MSPs are hitherto unexplored, and observations with the \r\nParkes UWL receiver will be very valuable in that aspect. Main aims of this proposal are, \r\n(i) Investigation of emission geometry and probing the origin of radio and gamma-ray \r\nemission with relative phase alignment using polarisation observations with the Parkes telescope.\r\n(ii) Investigation of profile evolution and spectra for these MSPs from 150 MHz to 4 GHz with \r\nParkes and GMRT observations.\r\nProposed radio polarisation study with the Parkes telescope over the large bandwidth UWL receiver \r\nbetween 0.7 to 4 GHz, will complement our knowledge on spectra and profile evolution below 700 MHz \r\nwith the GMRT observations. We request 16-hours of observing time at the Parkes to perform this study.

我们申请使用帕克斯望远镜（Parkes telescope）的观测时间，以观测五颗毫秒脉冲星（millisecond pulsars）
- PSR J1120-3618、PSR J1207-5050、PSR J1536-4948、PSR J1646-2142及PSR J1828+0625。
这些毫秒脉冲星（MSPs）是在利用巨型米波射电望远镜（GMRT）对费米（Fermi）未知伽马射线源的巡天中发现的。
这些毫秒脉冲星的射电偏振特性迄今未被探索，而使用帕克斯UWL接收器进行观测将在该方面具有重要价值。
本申请的主要目标为：
(i) 通过帕克斯望远镜的偏振观测，结合相对相位校准，研究辐射几何结构并探究射电与伽马射线辐射的起源。
(ii) 利用帕克斯望远镜和GMRT的观测数据，研究这些毫秒脉冲星在150 MHz至4 GHz频段的轮廓演化与能谱特性。
本申请计划利用帕克斯望远镜的超宽带UWL接收器（0.7至4 GHz频段）开展射电偏振研究，这将补充我们通过GMRT观测获得的700 MHz以下频段的能谱与轮廓演化知识。我们申请16小时的帕克斯望远镜观测时间以完成此项研究。