中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共17条,第1-10条 帮助

条数/页: 排序方式:
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:25/0  |  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.  
金钱槭果实化学成分分析 期刊论文  OAI收割
云南农业大学学报(自然科学), 2012, 期号: 4, 页码: 600-603
石亚娜; 王跃虎; 郭蓉; 张金渝; 王元忠; 金航; 龙春林
收藏  |  浏览/下载:58/0  |  提交时间:2012/09/12
激光熔敷(焊)技术在航空发动机生产中的应用 期刊论文  OAI收割
机械工人(热加工), 2007, 期号: 6, 页码: 45-47
王茂才; 段绪海
收藏  |  浏览/下载:18/0  |  提交时间:2012/04/12
基于“离子开关”的油品脱酸及动力学研究 会议论文  OAI收割
第三届全国化学工程与生物化工年会, 中国广西南宁, 2006-11
于英豪; 刘军; 何宏艳; 张锁江
收藏  |  浏览/下载:39/0  |  提交时间:2013/09/29
铯原子钟的黑体辐射频移 会议论文  OAI收割
2005年全国时间频率学术交流会, 中国西安, 2005
张首刚; A.Clairon
收藏  |  浏览/下载:17/0  |  提交时间:2012/10/19
近红外光谱分析仪的发展及在农产品、食品中的应用 期刊论文  OAI收割
光机电信息, 2003, 期号: 05, 页码: 24-29
作者:  
张军;  张军
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/11
轴颈测量中支撑对测量影响的探讨 会议论文  OAI收割
中国吉林长春
作者:  
冯晓国
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/19
检测技术在农业科研和农业产品开发中的重要作用 会议论文  OAI收割
2001
潘亚非; 娄道明; 饶桂春
收藏  |  浏览/下载:75/0  |  提交时间:2012/05/29
研究中国国情和转型期的矛盾 期刊论文  OAI收割
社科信息文荟, 1995, 期号: 21, 页码: 12
胡鞍钢
收藏  |  浏览/下载:22/0  |  提交时间:2012/04/05