检索结果-南通市图书馆

Progress of Solar Wind Magnetosphere Ionosphere Link Explorer(SMILE) Mission

在线全文

学校读者我要写书评

暂无评论

空间科学学报 2018年第5期38卷 657-661页

作者： WANG Chi BRANDUARDI-RAYMOND Graziella State Key laboratory of space Weather National Space Science CenterChinese Academy of Sciences Mullard Space Science Laboratory University College

SMILE(Solar wind Magnetosphere Ionosphere Link Explorer) mission is a joint ESA-CAS space science project. The working orbit is a 19 Re 5000 km HEO with 4 scientific instruments: Soft X-ray Imager(SXI), Ultra-Violet Imager(UVI), Magnetometer(MAG) and Light Ion Analyzer(LIA). SMILE aims to understand the interaction between the solar wind and the Earth's magnetosphere through the images of SXI and UVI and in-situ measurement from LIA and MAG. After the kick-off in 2016, the SMILE project went to Phase A study. The mission adoption is scheduled for November 2018, with a target launch date in 2022–2023.In this paper, the background of the mission, scientific objectives, the design and characteristics of scientific instruments and the mission outline will be introduced in details.

关键词：磁气圈电离层太阳连接科学工程科学仪器离子分析器 SMILE

Recent Advance in the Solar Wind Magnetosphere Ionosphere Link Explorer(SMILE)Mission

在线全文

学校读者我要写书评

暂无评论

空间科学学报 2022年第4期42卷 568-573页

作者： WANG Chi BRANDUARDI-RAYMONT G ESCOUBET C P State Key laboratory of space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190 Mullard Space Science Laboratory University College LondonLondon RH56NT European space Agency/European space Research and Technology Centre Noordwijk 2201 AZ

The SMILE(Solar wind Magnetosphere Ionosphere Link Explorer)mission is a joint space science mission between the European space Agency(ESA)and the Chinese Academy of sciences(CAS),aiming to understand the interaction of the solar wind with the Earth’s magnetosphere in a global manner.The mission was adopted by CAS in November 2016 and by ESA in March 2019 with a target launch date in the year 2024-2025.We report the recent progress of SMILE mission by May,2022.

关键词： SMILE Soft X-ray Imager(SXI) Ultra-Violet Imager(UVI) Light Ion Analyzer(LIA) MAGnetometer(MAG)

Update on the ESA-CAS Joint Solar Wind Magnetosphere Ionosphere Link Explorer(SMILE)Mission

在线全文

学校读者我要写书评

暂无评论

空间科学学报 2020年第5期40卷 700-703页

作者： WANG Chi BRANDUARDI-RAYMONT Graziella State Key laboratory of space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190 Mullard Space Science Laboratory University College LondonLondon RH56NT

The SMILE(Solar wind Magnetosphere Ionosphere Link Explorer)mission aims at deepening our understanding of the interaction of the solar wind with the Earth magnetosphere.It is the first time that ESA and CAS jointly select,design,implement,launch,and operate a space mission.The mission was adopted by CAS in November 2016 and by ESA in March 2019 with a target launch date by the end of 2023.

关键词： SMILE Soft X-ray Imager(SXI) Ultra-Violet Imager(UVI) Light Ion Analyzer(LIA) MAGnetometer(MAG)

Simulation of the SMILE Soft X-ray Imager response to a southward interplanetary magnetic field turning

在线全文

学校读者我要写书评

暂无评论

Earth and Planetary Physics 2024年第1期8卷 39-46页

作者： Andrey Samsonov Graziella Branduardi-Raymont Steven Sembay Andrew Read David Sibeck Lutz Rastaetter Mullard Space Science Laboratory University College LondonDorking RH56NTUK Leicester University Leicester LE17RHUK Goddard space Flight Center National Aeronautics and Space AdministrationGreenbeltMD 20771USA

The Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)Soft X-ray Imager(SXI)will shine a spotlight on magnetopause dynamics during magnetic reconnection.We simulate an event with a southward interplanetary magnetic field turning and produce SXI count maps with a 5-minute integration time.By making assumptions about the magnetopause shape,we find the magnetopause standoff distance from the count maps and compare it with the one obtained directly from the magnetohydrodynamic(MHD)simulation.The root mean square deviations between the reconstructed and MHD standoff distances do not exceed 0.2 RE(Earth radius)and the maximal difference equals 0.24 RE during the 25-minute interval around the southward turning.

关键词： magnetopause magnetic reconnection solar wind charge exchange southward interplanetary magnetic field numerical modeling Solar wind Magnetosphere Ionosphere Link Explorer(SMILE) Soft X-ray Imager

THEMIS statistical study on the plasma properties of high-speed flows in Earth＇s magnetotail

在线全文

学校读者我要写书评

暂无评论

science China Earth sciences 2016年第3期59卷 548-555页

作者： PAN Dong Xiao SUN Wei Jie SHI Quan Qi TIAN An Min YAO Zhong Hua FU Sui Yan ZONG Qiu Gang ZHOU Xu Zhi PU Zu Yin Shandong Provincial Key laboratory of Optical Astronomy and Solar Terrestrial Environment School of Space Science and Physics Shandong University Weihai 264209 China State Key laboratory of space Weather Chinese Academy of Sciences Beijing 100190 China School of Earth and space sciences Peking University Beijing 100871 China Mullard Space Science Laboratory UCL Dorking RH5 6NT UK IGPP/ESS University of California Los Angeles CA 90095-1567 USA

Using Time History of Events and Macroscale Interactions during Substorms(THEMIS) observations from 2007 to 2011 tail seasons, we study the plasma properties of high speed flows(HSFs) and background plasma sheet event... 详细信息

关键词：等离子体特性地球磁尾高速流动统计转录因子 Boss 使用事件温度升高

Magnetic interaction in ultra-compact binary systems

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2009年第7期9卷 725-744页

作者： Kinwah Wu Mullard Space Science Laboratory University College London Holmbury St. Mary Surrey RH5 6NT United Kingdom

This article reviews the current works on ultra-compact double-degenerate binaries in the presence of magnetic interaction, in particular, unipolar induction. The orbital dynamics and evolution of compact white-dwarf pairs are discussed in detail. Models and predictions of electron cyclotron masers from unipolar-inductor compact binaries and unipolar-inductor white-dwarf planetary systems are presented. Einstein-Laub effects in compact binaries are briefly discussed.

关键词： stars binaries close - stars white dwarfs - gravitational waves - masers - radio continuum stars - X-rays binaries -- planetary systems

Numerical simulation of a possible origin of the positive radial metallicity gradient of the thick disk

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2014年第11期14卷 1406-1414页

作者： Awat Rahimi Kenneth Carrell Daisuke Kawata National Astronomical Observatories Chinese Academy of Sciences Mullard Space Science Laboratory University College London Holmbury St.Mary DorkingSurrey RH5 6NT UK

We analyze the radial and vertical metallicity and [α/Fe] gradients of the disk stars of a disk galaxy simulated in a fully cosmological setting with the chemo- dynamical galaxy evolution code GCD＋. We study how the radial abundance gradients vary as a function of height above the plane and find that the metallicity （[α/Fe]） gra- dient becomes more positive （negative） with increasing height, changing sign around 1.5 kpc above the plane. At the largest vertical height （2 〈丨z丨〈 3 kpc）, our simulated galaxy shows a positive radial metallicity gradient. We find that the positive metallicity gradient is caused by the age-metallicity and age-velocity dispersion relation, where younger stars have higher metallicity and lower velocity dispersion. Due to the age- velocity dispersion relation, a greater fraction of younger stars reaches 丨z丨〉 2 kpc at the outer region, because of the lower gravitational restoring force of the disk, i.e. flaring. As a result, the fraction of younger stars with higher metallicity due to the age-metallicity relation becomes higher at the outer radii, which makes the median metallicity higher at the outer radii. Combining this result with the recently observed age-metallicity and age-velocity dispersion relation for the Milky Way thick disk stars suggested by Haywood et al., we argue that the observed （small） positive radial metal- licity gradient at large heights of the Milky Way disk stars can be explained by flaring of the younger thick and/or thin disk stars.

关键词： Galaxy disk -- Galaxy kinematics and dynamics -- galaxies interac-tions- galaxies formation- galaxies evolution- galaxies abundances

Pressure gradient evolution in the near-Earth magnetotail at the arrival of BBFs

在线全文

学校读者我要写书评

暂无评论

Chinese science Bulletin 2014年第34期59卷 4804-4808页

作者： Zhonghua Yao Zuyin Pu Aimin Du Vassilis Angelopoulos Christopher J.Owen Jiang Liu Xiangning Chu Xin Cao Suiyan Fu Qiugang Zong Yuan Wang Key laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences Mullard Space Science Laboratory UCL Dorking RH5 6NTUK School of Earth and space sciences Peking University Department of Earth Planetary and Space Sciences and Institute of Geophysics and Planetary Physics University of CaliforniaLos Angeles CA 90095-1567 USA

Using in situ observations from THEMIS A, D and E during the 2008–2011 tail season, we present a statistical study of the evolution of pressure gradients in the near-Earth tail during bursty bulk flow(BBF) convection.We identified 138 substorm BBFs and 2,197 non-substorm BBFs for this study. We found that both the pressure and the BZcomponent of the magnetic field were enhanced at the arrival of BBFs at the spacecraft locations. We suggest that the increase of BZduring non-substorm BBFs is associated with flux pile-up. However, the much stronger enhancement of BZduring substorm BBFs implies the occurrence of magnetic field dipolarization which is caused by both the flux pile-up process and near-Earth current disruption. Furthermore, a bow-wave-like high pressure appears to be formed at the arrival of substorm BBFs,which is responsible for the formation of region-1-sense FACs. The azimuthal pressure gradient associated with the arrival of substorm BBFs lasts for about 5 min. The enhanced pressure gradient associated with the bow waveis caused by the braking and diversion of the Earthward flow in the inner plasma sheet. The results from this statistical study suggest that the braking and azimuthal diversion of BBFs may commonly create azimuthal pressure gradients, which are related to the formation of the FAC of the substorm current wedge.

关键词：压力梯度地球磁尾亚暴电流楔演进堆积过程等离子体片方位角 FAC

A Lunar-based Soft X-ray Imager(LSXI)for the Earth's magnetosphere

在线全文

学校读者我要写书评

暂无评论

science China Earth sciences 2021年第7期64卷 1026-1035页

作者： Yihong GUO Chi WANG Fei WEI Tianran SUN Xizheng YU Songwu PENG Graziella BRANDUARDI-RAYMONT Steven SEMBAY National space science Center Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of sciences Beijing 100049China Mullard Space Science Laboratory University College LondonSurrey RH56NTUK Department of Physics and Astronomy University of LeicesterLeicester LEI 7RHUK

We propose to use the Moon as a platform to obtain a global view of Earth's magnetosphere by a Lunar-based Soft X-ray Imager(LSXI).LSXI is a wide field-of-view Soft X-ray telescope,which can obtain X-ray images of Earth's magnetosphere based on the solar wind charge exchange(SWCX)X-ray emission.Global perspective is crucial to understand the overall interaction of the solar wind with magnetosphere.LSXI is capable of continuously monitoring the evolution of geospace conditions under the impact of the solar wind by simultaneous observation of the bow shock,magnetosheath,magnetopause and cusps for the first time.This proposal is answering the call for the Chinese Lunar Exploration Program Phase IV.

关键词： Soft X-ray imager Lunar Magnetosphere Micro-pore optics