摘要

实现脉冲星导航首先需要对脉冲星进行高精度测量,而脉冲星辐射的X射线相干时间极短,到达卫星探测器的光通量极低,必须在极弱光条件下实现强度关联探测来获取脉冲星信息。针对这一问题,使用可见光模拟源进行了强度关联干涉测量实验研究,获取二阶干涉条纹并得到了对应的角直径,分析了符合计数对测量误差的影响,以及探测系统的空间和时间分辨率对强度关联干涉测量结果的影响,为脉冲星X射线强度关联探测系统硬件参数的选取提供了依据。

Abstract

Pulsar navigation requires the precise measurement of pulsars. Pulsar X-ray radiation has an extremely short coherence time, and satellite detectors receive only ultralow photon flux. Therefore, to obtain pulsar information and under the conditions of ultralow photon flux, intensity-correlated detection should be implemented. To solve this problem, we conducted an experimental study of intensity-correlated interferometry using a simulated visible-light source. We obtained second-order interference fringes and a corresponding angular diameter. We analyzed herein how coincidence counting affected measurement errors and how the spatial and temporal resolutions of the detecting system affected the intensity-correlated interferometry. The results provide a basis for determining the hardware parameters for X-ray intensity-correlated detection of pulsars.

补充资料

中图分类号：O434.19

DOI：10.3788/AOS202040.0111013

所属栏目：“计算光学成像"专题

基金项目：国家重点研发计划、国家自然科学基金重大项目;

收稿日期：2019-07-29

修改稿日期：2019-09-29

网络出版日期：2020-01-01

作者单位    点击查看

联系人作者：陆荣华(lurh@siom.ac.cn)

备注：国家重点研发计划、国家自然科学基金重大项目;

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