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Comparison of simulated backgrounds with in-orbit observations for HE, ME, and LE onboard Insight-HXMT 期刊论文 OAI收割
Astrophysics and Space Science, 2020, 卷号: 365, 页码: 158
作者: HXMT

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收藏 | 浏览/下载：48/0 | 提交时间：2022/02/08

Insight-HXMT Geant4 simulation Background observation Astrophysics - Instrumentation and Methods for Astrophysics Abstract: Insight-HXMT, the first X-ray astronomical satellite in China, aims to reveal new sources in the Galaxy and to study fundamental physics of X-ray binaries from 1 to 250 keV. It has three collimated telescopes, the High Energy X-ray telescope (HE), the Medium Energy X-ray telescope (ME), and the Low Energy X-ray telescope (LE). Before the launch, in-orbit backgrounds of these three telescopes had been estimated through Geant4 simulation, in order to investigate the instrument performance and the achievement of scientific goals. In this work, these simulated backgrounds are compared with in-orbit observations. Good agreements are shown for all three telescopes. For HE, (1) the deviation of the simulated background rate after two years of operation in space is 5 % from the observation (2) the total background spectrum and the relative abundance of the 67 keV line show long-term increases both in simulations and observations. For ME, (1) the deviation of simulated background rate is within 15 % from the observation, and (2) there are no obvious long-term increase features in the background spectra of simulations and observations. For LE, the background level given by simulations is also consistent with observations. The consistencies of these comparisons validate that the Insight-HXMT mass model, i.e., space environment components and models adopted, physics processes selected, and detector constructions built, is reasonable. However, the line features at 7.5 and 8.0 keV, which are obvious in the observed spectra of LE, are not evident in simulations. This might result from uncertainties in the LE constructions.

A Fractal Denoising Method for Astronomical Spectral Signal 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 卷号: 31, 期号: 12, 页码: 3399-3402
作者: Han Jin-shu; Luo A-li; Zhao Yong-heng

收藏 | 浏览/下载：7/0 | 提交时间：2017/04/20

Astronomical spectra Fractal Denoising Equivalent width

A novel wavelet multiple thresholding algorithm for astronomical spectral signal denoising 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 卷号: 27, 期号: 8, 页码: 1644-1647
作者: Zhao Rui-Zhen; Hu Zhan-Yi; Hu Shao-Hai

收藏 | 浏览/下载：18/0 | 提交时间：2015/11/08

astronomical spectra wavelet transform multiple threshold denoising

基于模板匹配的天体光谱自动处理方法研究 学位论文 OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2006
作者: 段福庆

收藏 | 浏览/下载：112/0 | 提交时间：2015/09/02

A novel method for continuum normalization of astronomical spectrum signals 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 卷号: 26, 期号: 3, 页码: 587-590
作者: Zhao, RT; Luo, AL

收藏 | 浏览/下载：12/0 | 提交时间：2017/03/14

astronomical spectra wavelet transform continuum normalization

A method tor auto-extraction of spectral lines based on convolution type of wavelet packet transformation 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 卷号: 26, 期号: 2, 页码: 372-376
作者: Liu, ZT; Wu, FC; Luo, AL; Zhao, YH

收藏 | 浏览/下载：21/0 | 提交时间：2015/11/07

convolution type of wavelet packet local correlation algorithm astronomical spectra spectral line extraction

A method tor auto-extraction of spectral lines based on convolution type of wavelet packet transformation 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 卷号: 26, 期号: 2, 页码: 372-376
作者: Liu, ZT; Wu, FC; Luo, AL; Zhao, YH

收藏 | 浏览/下载：17/0 | 提交时间：2017/03/14

convolution type of wavelet packet local correlation algorithm astronomical spectra spectral line extraction

A wavelet-transform-based method for the automatic detection of late-type stars 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 卷号: 25, 期号: 7, 页码: 1158-1161
作者: Liu, ZT; Zhao, RZ; Zhao, YH; Wu, FC

收藏 | 浏览/下载：10/0 | 提交时间：2015/11/06

wavelet transform late-type stars astronomical spectra molecule absorption bands

A wavelet-transform-based method for the automatic detection of late-type stars 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 卷号: 25, 期号: 7, 页码: 1158-1161
作者: Liu, ZT; Zhao, RZ; Zhao, YH; Wu, FC

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收藏 | 浏览/下载：8/0 | 提交时间：2017/10/19

Wavelet Transform Late-type Stars Astronomical Spectra Molecule Absorption Bands

Wavelet transform zero-crossing method for auto-extraction of spectral lines 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 卷号: 25, 期号: 1, 页码: 153-156
作者: Zhao, RZ; Hu, ZY; Zhao, YH

收藏 | 浏览/下载：19/0 | 提交时间：2015/11/06

wavelet transform astronomical spectra spectral line extraction zero-crossings