中国科学院机构知识库网格系统: 检索

The enhanced X-ray Timing and Polarimetry mission - eXTP: an update on its scientific cases, mission profile and development status 期刊论文 OAI收割
SPACE TELESCOPES AND INSTRUMENTATION 2022: ULTRAVIOLET TO GAMMA RAY, 2022, 卷号: 12181, 页码: 121811W
作者: eXTP

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收藏 | 浏览/下载：5/0 | 提交时间：2023/11/09

black hole neutron star X-ray timing X-ray polarimetry equation of state extreme gravity extreme magnetism extreme density

A possible overall scenario for the outburst evolution of MAXI J1820+070 revealed by Insight-HXMT 期刊论文 OAI收割
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 卷号: 518, 期号: 2, 页码: 2521-2528
作者: Peng, JQ; Zhang, S; Chen, YP; Kong, LD; Wang, PJ

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收藏 | 浏览/下载：3/0 | 提交时间：2023/11/10

X-rays: binaries X-rays: individual (MAXI J1820+070)

A Possible 250 s X-Ray Quasi-periodicity in the Fast Blue Optical Transient AT2018cow 期刊论文 OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2022, 卷号: 22, 期号: 12, 页码: 125016
作者: Zhang, WJ; Shu, XW; Chen, JH; Sun, LM; Shen, RF

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收藏 | 浏览/下载：5/0 | 提交时间：2023/11/10

black hole physics X-rays: individual (AT2018cow) X-rays: bursts

VO4-Modified Layered Double Hydroxides Nanosheets for Highly Selective Photocatalytic CO2 Reduction to C1 Products 期刊论文 OAI收割
Small, 2022, 卷号: 18, 期号: 40, 页码: 2203787
作者: Bai, Sha; Ning, Chenjun; Wang, Huijuan; Liu, Guihao; Zheng, Lirong

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收藏 | 浏览/下载：3/0 | 提交时间：2023/11/13

Wavelet analysis of the transient QPOs in MAXI J1535-571 with Insight-HXMT 期刊论文 OAI收割
Monthly Notices of the Royal Astronomical Society, 2022, 卷号: 517, 期号: 1, 页码: 182
作者: Chen, X.; Wang, W.; Tian, P. F.; Zhang, P.; Liu, Q.

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收藏 | 浏览/下载：4/0 | 提交时间：2023/11/10

black hole physics Stars: individual: MAXI J1535-571 X-rays: binaries Astrophysics - High Energy Astrophysical Phenomena Astrophysics - Solar and Stellar Astrophysics

Improved Water Oxidation of Fe2O3/Fe2TiO5Photoanode by Functionalizing with a Hydrophilic Organic Hole Storage Overlayer 期刊论文 OAI收割
ACS CATALYSIS, 2022, 卷号: 12, 期号: 13, 页码: 7833-7842
作者: Deng, Jiujun; Li, Yaxi; Xiao, Ying; Feng, Kun; Lu, Cheng

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收藏 | 浏览/下载：4/0 | 提交时间：2023/11/09

Single-Atom-Based Heterojunction Coupling with Ion-Exchange Reaction for Sensitive Photoelectrochemical Immunoassay 期刊论文 OAI收割
NANO LETTERS, 2021, 卷号: 21, 期号: 4, 页码: 1879--1887
作者: BSRF用户

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收藏 | 浏览/下载：4/0 | 提交时间：2022/09/15

Evaluation and comparison of bentonite surface fractal dimension and prediction of swelling deformation: Synchrotron radiation SAXS and N-2-adsorption isotherms method 期刊论文 OAI收割
CONSTRUCTION AND BUILDING MATERIALS, 2021, 卷号: 269, 页码: 121331
作者: BSRF用户

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收藏 | 浏览/下载：8/0 | 提交时间：2022/09/15

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

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收藏 | 浏览/下载：51/0 | 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.

Surface step decoration of isolated atom as electron pumping: atomic-level insights into visible-light hydrogen evolution 期刊论文 iSwitch采集
Nano energy, 2018, 卷号: 45, 页码: 109-117
作者: Wu, Xin; Zhang, Huabin; Dong, Juncai; Qiu, Mei; Kong, Jintao

收藏 | 浏览/下载：111/0 | 提交时间：2019/04/23

Isolated atom Surface step Hydrogen evolution Electron pumping Catalysis