中国科学院机构知识库网格系统: 检索

面向脉冲星深空基准建立的X射线望远镜及发展设想 期刊论文 OAI收割
航空学报, 2023, 卷号: 44, 期号: 3
作者: 周庆勇; 魏子卿; 雷耀虎; 刘思伟; 郝小龙

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收藏 | 浏览/下载：25/0 | 提交时间：2023/06/27

deep space reference pulsar navigation X-ray telescope X-ray detector pulsar timing 深空基准脉冲星导航 X射线望远镜 X射线探测器脉冲星计时

Jupiter's X-Ray and UV Dark Polar Region 期刊论文 OAI收割
GEOPHYSICAL RESEARCH LETTERS, 2022, 卷号: 49, 期号: 11, 页码: 13
作者: Dunn, W. R.; Weigt, D. M.; Grodent, D.; Yao, Z. H.; May, D.

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收藏 | 浏览/下载：58/0 | 提交时间：2022/07/19

Jupiter Hubble Space Telescope magnetosphere dark polar region aurora Chandra X-ray Observatory

Design and verification of the HXI collimator on the ASO-S mission 期刊论文 OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2021, 卷号: 21, 期号: 6
作者: Chen, Deng-Yi; Hu, Yi-Ming; Ma, Tao; Su, Yang; Yang, Jian-Feng

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收藏 | 浏览/下载：57/0 | 提交时间：2021/09/06

Solar observation ASO-S X-ray telescope the collimator verification

Optical design and simulation of Einstein Probe satellite follow-up X-ray telescope 期刊论文 OAI收割
Optical Engineering, 2021, 卷号: 60, 期号: 2
作者: Zhu, Yuxuan; Lu, Jingbin; Yang, Yangji; Cong, Min; Sheng, Lizhi

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收藏 | 浏览/下载：60/0 | 提交时间：2021/03/29

Einstein Probe the follow-up x-ray telescope x-ray focusing mirror system opticaldesign ray-tracing

Detection of Flare Multiperiodic Pulsations in Mid-ultraviolet Balmer Continuum, Lyl Hard X-Ray, and Radio Emissions Simultaneously 期刊论文 OAI收割
The Astrophysical Journal, 2021, 卷号: 921, 页码: 179
作者: HXMT

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收藏 | 浏览/下载：32/0 | 提交时间：2022/02/08

Solar flares Solar oscillations Solar ultraviolet emission Solar x-ray emission Solar radio emission 1496 1515 1533 1536 1522 Astrophysics - Solar and Stellar Astrophysics Abstract: Quasi-periodic pulsations (QPPs), which usually appear as temporal pulsations of the total flux, are frequently detected in the light curves of solar/stellar flares. In this study, we present the investigation of nonstationary QPPs with multiple periods during the impulsive phase of a powerful flare on 2017 September 6, which were simultaneously measured by the Hard X-ray Modulation Telescope (Insight-HXMT), as well as the ground-based BLENSW. The multiple periods, detected by applying a wavelet transform and Lomb-Scargle periodogram to the detrended light curves, are found to be ~20-55 s in the Ly`and mid-ultraviolet Balmer continuum emissions during the flare impulsive phase. Similar QPPs with multiple periods are also found in the hard X-ray emission and low-frequency radio emission. Our observations suggest that the flare QPPs could be related to nonthermal electrons accelerated by the repeated energy release process, i.e., triggering of repetitive magnetic reconnection, while the multiple periods might be modulated by the sausage oscillation of hot plasma loops. For the multiperiodic pulsations, other generation mechanisms could not be completely ruled out.

Geant4 simulation for the responses to X-rays and charged particles through the eXTP focusing mirrors 期刊论文 OAI收割
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2020, 卷号: 963
作者: Qi, L.Q.; Li, G.; Xu, Y.P.; Zhang, J.; Yang, Y.J.

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收藏 | 浏览/下载：93/0 | 提交时间：2020/03/23

X-ray telescope eXTP Geant4

The High Energy X-ray telescope (HE) onboard the Insight-HXMT astronomy satellite 期刊论文 OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2020, 卷号: 63, 期号: 4, 页码: 249503
作者: Liu, CongZhan; Zhang, YiFei; Li, XuFang; Lu, XueFeng; Chang, Zhi

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收藏 | 浏览/下载：44/0 | 提交时间：2020/10/19

X-ray telescope HXMT calibration scintillation detector

The Low Energy X-ray telescope (LE) onboard the Insight-HXMT astronomy satellite 期刊论文 OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2020, 卷号: 63, 期号: 4, 页码: 249505
作者: Chen, Yong; Cui, WeiWei; Li, Wei; Wang, Juan; Xu, YuPeng

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收藏 | 浏览/下载：56/0 | 提交时间：2020/10/19

LE X-ray telescope SCD collimators

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：53/0 | 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.

Mirror module design of x-ray telescopes of eXTP mission 会议论文 OAI收割
San Diego, CA, 2019-08-13
作者: Basso, S.; Civitani, M.; Pareschi, G.; Sironi, G.; Spiga, D.

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收藏 | 浏览/下载：34/0 | 提交时间：2020/06/11

eXTP X-ray optic Mirror module polarimeter X-ray telescope