A modified direct demodulation method applied to Insight-HXMT Galactic plane scanning survey

被引：3

作者：

Guan, Ju ^{[1
]}

Lu, Fang-Jun ^{[1
]}

Zhang, Shu ^{[1
]}

Song, Li-Ming ^{[1
]}

Chen, Yong ^{[1
]}

Liao, Jin-Yuan ^{[1
]}

Li, Cheng-Kui ^{[1
]}

Nang, Yi ^{[1
,2
]}

Sai, Na ^{[1
,2
]}

Wang, Chen ^{[2
,3
]}

Zhang, Shuang-Nan ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100012, Peoples R China

来源：

JOURNAL OF HIGH ENERGY ASTROPHYSICS | 2020年 / 26卷

基金：

中国国家自然科学基金;

关键词：

Methods: data analysis; X-rays: variable sources; Telescope: Insight-HXMT; IMAGE-RECONSTRUCTION; RAY; RESOLUTION;

D O I：

10.1016/j.jheap.2020.02.002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a modified direct demodulation (DD) method for the detection of fast variable objects with the Insight-HXMT Galactic plane survey, which is dedicated to hunting for new transients and monitoring known variable sources. The novelty of the improved DD method is the reconstruction of the modified response matrix, in which the variability of a source is properly handled. Monte Carlo (MC) simulation results demonstrate its power for the detection of variable sources with different time scales, resulting in more accurate location and precise flux monitoring. The application of the method to the Insight-HXMT Galactic plane survey data reveals that the type-II bursts can be well detected for the Rapid Burster MXB 1730-335, with an average rate of 2 bursts min(-1) in a manner of the well-known relaxation oscillation. (C) 2020 Elsevier B.V. All rights reserved.

引用

页码：11 / 20

页数：10

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