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CAS IR Grid
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长春光学精密机械与物... [9]
地质与地球物理研究所 [6]
近代物理研究所 [4]
国家空间科学中心 [3]
地理科学与资源研究所 [2]
武汉物理与数学研究所 [2]
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期刊论文 [23]
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空间物理 [2]
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Influence of magnetic filter on plasma parameters of the prototype RF ion source at ASIPP
期刊论文
OAI收割
FUSION ENGINEERING AND DESIGN, 2020, 卷号: 160
作者:
Wang, Qi
;
Hu, Chundong
;
Xie, Yahong
;
Liang, Lizhen
;
Wei, Jianglong
  |  
收藏
  |  
浏览/下载:43/0
  |  
提交时间:2021/04/26
Neutral beam heating
Radio frequency negative ion source
Magnetic field filter
Electron temperature and density
An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242
期刊论文
OAI收割
Astronomy and Astrophysics, 2020, 卷号: 641, 页码: A101
作者:
HXMT
  |  
收藏
  |  
浏览/下载:61/0
  |  
提交时间:2022/02/08
accretion
accretion disks
black hole physics
X-rays: binaries
time
Astrophysics - High Energy Astrophysical Phenomena
Abstract:
Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature simultaneous changes in the spectral hardness and the power density spectrum (PDS). They occur at a crucial time in the evolution of these systems, when the accretion disc emission starts to dominate over coronal emission. Flip-flops remain a poorly understood phenomenon, so we aim to thoroughly investigate them in a system featuring several such transitions.
Methods: Within the multitude of observations of
Swift J1658.2-4242
during its outburst in early 2018, we detected 15 flip-flops, enabling a detailed analysis of their individual properties and the differences between them. We present observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL, and ATCA. We analysed their light curves, searched for periodicities, computed their PDSs, and fitted their X-ray spectra, to investigate the source behaviour during flip-flop transitions and how the interval featuring flip-flops differs from the rest of the outburst.
Results: The flip-flops of Swift J1658.2-4242 are of an extreme variety, exhibiting flux differences of up to 77% within 100 s, which is much larger than what has been seen previously. We observed radical changes in the PDS simultaneous with the sharp flux variations, featuring transitions between the quasi-periodic oscillation types C and A, which have never been observed before. Changes in the PDS are delayed, but more rapid than changes in the light curve. Flip-flops occur in two intervals within the outburst, separated by about two weeks in which these phenomena were not seen. Transitions between the two flip-flop states occurred at random integer multiples of a fundamental period of 2.761 ks in the first interval and 2.61 ks in the second. Spectral analysis reveals the high and low flux flip-flop states to be very similar, but distinct from intervals lacking flip-flops. A change of the inner temperature of the accretion disc is responsible for most of the flux difference in the flip-flops. We also highlight the importance of correcting for the influence of the dust scattering halo on the X-ray spectra.
The Impact of Spatial Form of Urban Architecture on the Urban Thermal Environment: A Case Study of the Zhongshan District, Dalian, China
期刊论文
OAI收割
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 2018, 卷号: 11, 期号: 8, 页码: 2709-2716
作者:
Yang, Jun
;
Su, Junru
;
Xia, Jianhong (Cecilia)
;
Jin, Cui
;
Li, Xueming
  |  
收藏
  |  
浏览/下载:36/0
  |  
提交时间:2019/05/23
Building height
building density
correlation analysis
heat island effect
land surface temperature (LST)
spatial and temporal evolution
Zhongshan District
Dalian
Rocket in situ observation of equatorial plasma irregularities in the region between E and F layers over Brazil
期刊论文
OAI收割
ANNALES GEOPHYSICAE, 2017, 卷号: 35, 期号: 3, 页码: 413-422
作者:
Savio Odriozola, Siomel
;
de Meneses, Francisco Carlos, Jr.
;
Muralikrishna, Polinaya
;
Pimenta, Alexandre Alvares
;
Kherani, Esfhan Alam
  |  
收藏
  |  
浏览/下载:25/0
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提交时间:2018/02/28
Ionosphere (Equatorial Ionosphere
Plasma Temperature And Density
Plasma Waves And Instabilities)
Investigation on symmetry and characteristic properties of the fragmenting source in heavy-ion reactions through reconstructed primary isotope yields
期刊论文
OAI收割
NUCLEAR SCIENCE AND TECHNIQUES, 2016, 卷号: 27, 页码: 5
作者:
Wang, Jian-Song
;
Huang, Mei-Rong
;
Ren, Pei-Pei
;
Wang, Qi
;
Duan, Fang-Fang
  |  
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2018/05/31
Symmetry energy
Nuclear temperature
Nuclear density and freeze-out
Investigation on symmetry and characteristic properties of the fragmenting source in heavy-ion reactions through reconstructed primary isotope yields
会议论文
OAI收割
作者:
Ren, Pei-Pei
;
Duan, Fang-Fang
;
Liu, Xing-Quan
;
Lin, Wei-Ping
;
Wada, Ryoichi
  |  
收藏
  |  
浏览/下载:41/0
  |  
提交时间:2018/08/20
Symmetry energy
Nuclear temperature
Nuclear density and freeze-out
Investigation on symmetry and characteristic properties of the fragmenting source in heavy-ion reactions through reconstructed primary isotope yields
会议论文
OAI收割
作者:
Jin, Shi-Lun
;
Ma, Jun-Bing
;
Ma, Peng
;
Lin, Wei-Ping
;
Wada, Ryoichi
  |  
收藏
  |  
浏览/下载:140/0
  |  
提交时间:2018/08/20
Symmetry energy
Nuclear temperature
Nuclear density and freeze-out
GLOBAL NONLINEAR STABILITY OF RAREFACTION WAVES FOR COMPRESSIBLE NAVIER-STOKES EQUATIONS WITH TEMPERATURE AND DENSITY DEPENDENT TRANSPORT COEFFICIENTS
期刊论文
OAI收割
KINETIC AND RELATED MODELS, 2016, 卷号: 9, 期号: 3, 页码: 469-514
作者:
Huang, Bingkang
;
Wang, Lusheng
;
Xiao, Qinghua
收藏
  |  
浏览/下载:53/0
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提交时间:2016/07/12
One-dimensional compressible Navier-Stokes equations
temperature and density dependent transport coefficients
global nonlinear stability of rarefaction waves
large initial data
A Robust Energy/Area-Efficient Forwarded-Clock Receiver With All-Digital Clock and Data Recovery in 28-nm CMOS for High-Density Interconnects
期刊论文
OAI收割
IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, 2016, 卷号: 24, 期号: 2, 页码: 578-586
作者:
Chen, Shuai
;
Li, Hao
;
Chiang, Patrick Yin
  |  
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2019/12/13
All-digital clock and data recovery (ADCDR)
delay-locked loop (DLL)
forwarded-clock (FC) receiver
high-density interconnect
jitter tolerance
multicore processor
process variation
voltage and temperature drift
Context dependency of the density-body mass relationship in litter invertebrates along an elevational gradient
期刊论文
OAI收割
SOIL BIOLOGY & BIOCHEMISTRY, 2015, 卷号: 88, 期号: 1, 页码: 323-332
作者:
Xu, Guorui
;
Zhang, Shuang
;
Lin, Yinghua
;
Ma, Keming
收藏
  |  
浏览/下载:32/0
  |  
提交时间:2016/03/03
Density-body mass relationship
Temperature
Litter invertebrates
Litter stoichiometry
Temporal and spatial variation
Context dependency