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浏览/检索结果: 共47条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Two periods instead of one in a single 6.7 GHz methanol maser feature in G9.62+0.20E 期刊论文  OAI收割 Monthly Notices of the Royal Astronomical Society, 2022, 卷号: 516, 期号: 1, 页码: L96-L100 作者:  MacLeod, G. C.;  Yonekura, Y.;  Tanabe, Y.;  Baan, W. A.;  Brogan, C. L.   |  收藏  |  浏览/下载：18/0  |  提交时间：2023/06/19 masers  stars: formation  stars: protostars  ISM: individual objects:  G9.62+0.20E  ISM: molecules  radio lines: ISM  h ii regions  variability  environment  pulsation  discovery  Astronomy & Astrophysics   Searching for Variable Stars in the Open Cluster NGC 2355 and Its Surrounding Region 期刊论文  OAI收割 Astronomical Journal, 2022, 卷号: 164, 期号: 2, 页码: 40 作者:  Wang, Hong;  Zhang, Yu;  Zeng, Xiangyun;  Hu, Qingshun;  Liu, Jinzhong   |  收藏  |  浏览/下载：17/0  |  提交时间：2023/06/19 pulsation  telescope  algorithm  astropy  system  Astronomy & Astrophysics   Clusters of Solar Radio Spikes Modulated by Quasi-Periodic Pulsations in a Confined Flare 期刊论文  OAI收割 UNIVERSE, 2022, 卷号: 8, 期号: 7, 页码: 14 作者:  Huang, Jing;  Tan, Chengming;  Chen, Xingyao;  Tan, Baolin;  Yan, Yihua   |  收藏  |  浏览/下载：34/0  |  提交时间：2022/09/19 solar flare  solar radio burst  spike  quasi-periodic pulsation  particle acceleration   KIC 12602250: A Low-amplitude Double-mode Delta Scuti Star with Amplitude Modulation 期刊论文  OAI收割 Astronomical Journal, 2021, 卷号: 162, 期号: 2, 页码: 48 作者:  Lv, Chenglong;  Esamdin, Ali;  Zeng, Xiangyun;  Pascual-Granado, J.;  Yang, Taozhi   |  收藏  |  浏览/下载：50/0  |  提交时间：2022/06/30 light curves  frequency  pulsation  asteroseismology  variability  photometry  Astronomy & Astrophysics   N-2 periodic pulsation process intensification to improve ethanol productivity in solid state fermentation of steam-exploded corn stalk 期刊论文  OAI收割 RENEWABLE ENERGY, 2021, 卷号: 169, 页码: 1058-1065 作者:  Wang, Lan;  Zhou, Yaoyao;  Liu, Yang;  Chen, Hongzhang   |  收藏  |  浏览/下载：38/0  |  提交时间：2021/08/31 Bioethanol  Steam explosion  Ethanol fermentation  N-2 periodic pulsation  Metabolic flux analysis   Investigating variable stars in the open cluster NGC 1912 and its surrounding field 期刊论文  OAI收割 Research in Astronomy and Astrophysics, 2021, 卷号: 21, 期号: 3, 页码: 68 作者:     |  收藏  |  浏览/下载：31/0  |  提交时间：2022/06/30 open clusters and associations: NGC 1912  techniques: photometric  stars: variables: general  visible open clusters  delta-scuti  proper motions  convection  pulsation  telescope  population  distances  algorithm  catalog  Astronomy & Astrophysics   Possible Evidence of Hydrogen Emission in the First-overtone and Multimode RR Lyrae Variables 期刊论文  OAI收割 The Astrophysical Journal, 2021, 卷号: 909, 期号: 1 作者:  Duan,Xiao-Wei;  Chen,Xiao-Dian;  Deng,Li-Cai;  Yang,Fan;  Liu,Chao   |  收藏  |  浏览/下载：24/0  |  提交时间：2021/12/06 RRd variable stars  RR Lyrae variable stars  RRc variable stars  Blazhko effect  Stellar atmospheres  Stellar atmospheric opacity  Pulsation modes  Stellar pulsations  Shocks  Spectroscopy  Astronomy data analysis  Astronomy databases   High Productivity Ethanol from Solid-State Fermentation of Steam-Exploded Corn Stover Using Zymomonas mobilis by N-2 Periodic Pulsation Process Intensification 期刊论文  OAI收割 APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, 2020, 页码: 16 作者:  Sun, Lele;  Wang, Lan;  Chen, Hongzhang   |  收藏  |  浏览/下载：29/0  |  提交时间：2020/06/15 Lignocellulosic ethanol  Solid-state fermentation  N-2 periodic pulsation process intensification  Zymomonas mobilis  Simultaneous saccharification fermentation  Periodic peristalsis  Steam explosion   Temporal and Spectral Studies by XMM-Newton of Jupiter's X-ray Auroras During a Compression Event 期刊论文  OAI收割 JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2020, 卷号: 125, 期号: 5, 页码: 20 作者:  Wibisono, A. D.;  Branduardi-Raymont, G.;  Dunn, W. R.;  Coates, A. J.;  Weigt, D. M.   |  收藏  |  浏览/下载：38/0  |  提交时间：2020/07/20 fast Fourier transform  X-rays  aurora  Jupiter  quasiperiodic pulsation  spectroscopy   Insight-HXMT observations of Swift J0243.6+6124: the evolution of RMS pulse fractions at super-Eddington luminosity 期刊论文  OAI收割 Monthly Notices of the Royal Astronomical Society, 2020, 卷号: 497, 页码: 5498-5506 作者:  HXMT   |  收藏  |  浏览/下载：43/0  |  提交时间：2022/02/08 stars: neutron  pulsars: individual: Swift J0243.6+6124  X-rays:  binaries  Astrophysics - High Energy Astrophysical Phenomena  Abstract: Based on Insight-HXMT data, we report on the pulse fraction evolution during the 2017-2018 outburst of the newly discovered first Galactic ultraluminous X-ray (ULX) source Swift J0243.6+6124. The pulse fractions of 19 observation pairs selected in the rising and fading phases with similar luminosity are investigated. The results show a general trend of the pulse fraction increasing with luminosity and energy at supercritical luminosity. However, the relative strength of the pulsation between each pair evolves strongly with luminosity. The pulse fraction in the rising phase is larger at luminosity below 7.71 × 1038 erg s-1, but smaller at above. A transition luminosity is found to be energy independent. Such a phenomenon is first confirmed by Insight-HXMT observations and we speculate that it may have relation with the radiation-pressure-dominated accretion disc.