首页|Angle measurement of pulsars based on spatially modulated X-ray intensity correlation

Angle measurement of pulsars based on spatially modulated X-ray intensity correlation

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High-precision angle measurement of pulsars is critical for realizing pulsar navigation.Compared to visible light and radio waves,the wavelength of X-rays is incredibly short,which provides the possibility of achieving better spatial resolution.However,due to the lack of applicable X-ray apparatus,extracting the angle information of pulsars through conventional X-ray methods is challenging.Here,we propose an approach of pulsar angle measurement based on spatially modulated X-ray intensity correlation[SMXIC],in which the angle information is obtained by measuring the spatial intensity correlation between two radiation fields.The theoretical model for this method has been established,and a proof-of-concept experi-ment was carried out.The SMXIC measurement of observing angles has been demonstrated,and the experimental results are consistent with the theoretical values.The potential of this method in future applications is discussed,and theoretically,the angular measurement at the level of micro-arcsecond can be expected.The sphere of pulsar navigation may benefit from our fresh insights.

pulsar measurementX-ray measurementintensity correlationspatial modulation

汪德、喻虹、谈志杰、陆荣华、韩申生

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Key Laboratory of Quantum Optics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China

Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China

Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310024,China

National Natural Science Foundation of ChinaNational Key Research and Development Program of ChinaZhangjiang Laboratory

116278112017YFB0503303

2024

中国光学快报(英文版)
中国光学学会 中国科学院上海光学精密机械研究所

中国光学快报(英文版)

CSTPCD
影响因子:1.305
ISSN:1671-7694
年,卷(期):2024.22(4)