中国科学院机构知识库网格系统: 检索

Frequency steering of spaceborne clocks based on XPNAV-1 observations 期刊论文 OAI收割
CHINESE JOURNAL OF AERONAUTICS, 2023, 卷号: 36, 期号: 6, 页码: 266-278
作者: Han, Mengna; Tong, Minglei; LI, Liansheng; Shi, Yongqiang; Yang, Tinggao

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收藏 | 浏览/下载：28/0 | 提交时间：2023/12/13

Pulsar time scale Pulsar timing Atomic clock Frequency steering X-ray observation

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：21/0 | 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

Effect of Ephemeris on Pulsar Timing and Navigation Accuracy Based on X-ray Pulsar Navigation-I Data 期刊论文 OAI收割
UNIVERSE, 2022, 卷号: 8, 期号: 7, 页码: 18
作者: Deng, Yongtao; Jin, Shuanggen

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收藏 | 浏览/下载：45/0 | 提交时间：2022/09/19

X-ray pulsar navigation pulsar timing JPL DE ephemerides XPNAV-I satellite orbit determination

Constraint analysis of measurement accuracy in high-precision X-ray pulsar positioning 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2020, 卷号: 34, 期号: 30
作者: Yao, Li; Tong, Su; Mei, Luan; Zhang, Furui; Zhu, Yechuan

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收藏 | 浏览/下载：49/0 | 提交时间：2021/01/07

X-ray pulsar navigation angular position second-order correlation

The braking index of PSR B0540-69 and the associated pulsar wind nebula emission after spin-down rate transition 期刊论文 OAI收割
Monthly Notices of the Royal Astronomical Society, 2020, 卷号: 494, 页码: 1865-1870
作者: HXMT

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收藏 | 浏览/下载：55/0 | 提交时间：2022/02/08

stars: magnetic field stars: neutron pulsars: general Astrophysics - High Energy Astrophysical Phenomena Abstract: In 2011 December, PSR B054-69 experienced a spin-down rate transition (SRT), after which the spin-down power of the pulsar increased by $\sim 36{{\ \rm per\ cent}}$. About 1000 d after the SRT, the X-ray luminosity of the associated pulsar wind nebula (PWN) was found to brighten by $32\pm 8{{\ \rm per\ cent}}$. After the SRT, the braking index n of PSR B0540-69 changes from n = 2.12 to 0.03 and then keeps this value for about five years before rising to n = 0.9 in the following years. We find that most of the current models have difficulties in explaining the measured braking index. One exceptive model of the braking index evolution is the increasing dipole magnetic field of PSR B0540-69. We suggest that the field increase may result from some instabilities within the pulsar core that enhance the poloidal component at the price of toroidal component of the magnetic field. The increasing dipole magnetic field will result in the X-ray brightening of the PWN. We fit the PWN X-ray light curve by two models: one assumes a constant magnetic field within the PWN during the brightening and the other assumes an enhanced magnetic field proportional to the energy density of the PWN. It appears that the two models fit the data well, though the later model seems to fit the data a bit better. This provides marginal observational evidence that magnetic field in the PWN is generated by the termination shock. Future high-quality and high-cadence data are required to draw a solid conclusion.

Application of Gaussian fitting to the fast search of pulsar periodic 期刊论文 OAI收割
Optik, 2019, 卷号: 198
作者: Xu, Neng; Sheng, Lizhi; Chen, Chen; Li, Yao; Su, Tong

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收藏 | 浏览/下载：163/0 | 提交时间：2019/09/20

X-ray pulsar-based navigation Dynamic experiment Period search

Silicon drift detector applied to X-ray pulsar navigation 期刊论文 OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2019, 卷号: 927, 页码: 429-434
作者: Xu, Neng; Sheng, Lizhi; Su, Tong; Chen, Chen; Li, Yao

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收藏 | 浏览/下载：139/0 | 提交时间：2019/04/22

X-ray pulsar-based Navigation Silicon drift detector Times-Of-Arrival

In-orbit Demonstration of X-Ray Pulsar Navigation with the Insight-HXMT Satellite 期刊论文 OAI收割
The Astrophysical Journal Supplement Series, 2019, 卷号: 244, 页码: 1
作者: HXMT

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收藏 | 浏览/下载：14/0 | 提交时间：2022/02/08

pulsars: general techniques: miscellaneous Astrophysics - Instrumentation and Methods for Astrophysics Abstract: In this work, we report the in-orbit demonstration of X-ray pulsar navigation with Insight-Hard X-ray Modulation Telescope (Insight-HXMT) Satellite, which was launched on 2017 June 15. The new pulsar navigation method Significance Enhancement of Pulse-profile with Orbit-dynamics is adopted to determine the orbit with observations of only one pulsar. In this test, the Crab pulsar is chosen and observed by Insight-HXMT from 2017 August 31 to September 5. Using the five-day long observation data, the orbit of Insight-HXMT is determined successfully with the three telescopes onboard: High Energy X-ray Telescope, Medium Energy X-ray Telescope, and Low Energy X-ray Telescope, respectively. By combining all the data, the position and velocity of the Insight-HXMT are pinpointed to within 10 km (3ҩ and 10 m s^-1 (3ҩ, respectively.

Evaluation of Mars probe positioning using X-ray pulsars, celestial, gravity-aided and ground-based measurements 期刊论文 OAI收割
PLANETARY AND SPACE SCIENCE, 2018, 卷号: 163, 页码: 14-34
作者: Liu, Jiandong; Jin, Shuanggen

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收藏 | 浏览/下载：52/0 | 提交时间：2019/04/08

Mars probe positioning X-ray pulsar Gravity-aided odometry Optical celestial techniques

Evaluation of Mars probe positioning using X-ray pulsars, celestial, gravity-aided and ground-based measurements 期刊论文 OAI收割
PLANETARY AND SPACE SCIENCE, 2018, 卷号: 163, 页码: 14-34
作者: Liu, Jiandong; Jin, Shuanggen

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收藏 | 浏览/下载：29/0 | 提交时间：2019/05/23

Mars Probe Positioning X-ray Pulsar Gravity-aided Odometry Optical Celestial Techniques