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浏览/检索结果: 共9条，第1-9条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 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   |  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.   Period ratios for standing kink and sausage modes in magnetized structures with siphon flow on the Sun 期刊论文  OAI收割 RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2016, 卷号: 16, 期号: 6 作者:  Yu Hui;  Chen ShaoXia;  Li Bo;  Xia LiDong   |  收藏  |  浏览/下载：24/0  |  提交时间：2021/12/06 CORONAL LOOP OSCILLATIONS  HYDROMAGNETIC SURFACE-WAVES  CYLINDRICAL FLUX TUBES  TRANSVERSE OSCILLATIONS  MAGNETOHYDRODYNAMIC WAVES  STEADY FLOWS  SOLAR-FLARE  MHD WAVES  SEISMOLOGY  PLASMA  magnetohydrodynamics (MHD)  Sun: corona  Sun: magnetic fields  waves   A ripple microstructure formation on a uniform-melted material surface by nanosecond laser pulses 期刊论文  OAI收割 physics procedia, 2011, 卷号: 22, 页码: 442-448 Huang, Yongguang; Liu, Shibing; Zhu, Hongliang 收藏  |  浏览/下载：17/0  |  提交时间：2012/06/14 Computer simulation  Plasma oscillations  Technology   Analysis of diffusive coefficient of electron heat pulse based on singular value decomposition in HT-7 tokamak 期刊论文  OAI收割 CHINESE PHYSICS B, 2010, 卷号: 19 -   |  收藏  |  浏览/下载：15/0  |  提交时间：2020/10/26 RUNAWAY ELECTRONS  SAWTOOTH OSCILLATIONS  ANOMALOUS TRANSPORT  PLASMAS  PROPAGATION  TURBULENCE  MODES  TFTR  electron cyclotron emission  ohmic plasma  heat diffusivity  tokamak   Mechanisms of electron injection into laser wakefields by a weak counter-propagating pulse 期刊论文  OAI收割 EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, 2009, 卷号: 175, 页码: 49 Sheng, ZM; Wang, WM; Trines, R; Norreys, P; Chen, M; Zhang, J 收藏  |  浏览/下载：18/0  |  提交时间：2013/09/18 WAVE-BREAKING  PLASMA-WAVES  BEAMS  ACCELERATION  OSCILLATIONS  AMPLITUDE  PARTICLE   Generation of plasma intrinsic oscillation at the front surface of a target irradiated by a circularly polarized laser pulse 期刊论文  OAI收割 phys. plasmas, 2009, 卷号: 16, 期号: 3, 页码: 33102 张晓梅; 沈百飞; Jin Zhangying; Wang Fengchao; Ji Liangliang 收藏  |  浏览/下载：1235/145  |  提交时间：2009/09/18 plasma light propagation  plasma oscillations  plasma simulation   Pulsations of microwave flaring emission at low and high frequencies 期刊论文  OAI收割 ASTRONOMY REPORTS, 2007, 卷号: 51, 期号: 7, 页码: 588-596 作者:  Reznikova, V. E.;  Melnikov, V. F.;  Su, Y.;  Huang, G. 收藏  |  浏览/下载：24/0  |  提交时间：2012/02/04 CORONAL LOOP OSCILLATIONS  SOLAR RADIO-BURSTS  GYROSYNCHROTRON EMISSION  PLASMA  ELECTRONS  SUMER   Vlasov simulation of the relativistic effect on the breaking of large amplitude plasma waves 期刊论文  OAI收割 ACTA PHYSICA SINICA, 2007, 卷号: 56, 期号: 2, 页码: 968 Xu, H; Sheng, ZM; Zhang, J 收藏  |  浏览/下载：22/0  |  提交时间：2013/09/23 NONLINEAR OSCILLATIONS  COLD-PLASMA  WARM  ACCELERATOR  EXCITATION  SPACE   TEARING INSTABILITIES AND MICROTURBULENCE IN TEXT 期刊论文  OAI收割 NUCLEAR FUSION, 1992, 卷号: 32, 期号: 9, 页码: 1545 YU, CX; BROWER, DL; ZHAO, SJ; BRAVENEC, RV; CHEN, JY; LIN, H; LUHMANN, NC; PEEBLES, WA; RITZ, CP; SCHOCH, PM; YANG, XZ 收藏  |  浏览/下载：35/0  |  提交时间：2013/09/23 HEAT PULSE-PROPAGATION  DENSITY-FLUCTUATIONS  EDGE PLASMA  TOKAMAK  TURBULENCE  SCATTERING  TRANSPORT  MODES  OSCILLATIONS  DISRUPTIONS