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浏览/检索结果: 共6条，第1-6条 帮助 限定条件 专题：高能物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序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 Detection of two bright radio bursts from magnetar SGR 1935 + 2154 期刊论文 Nature Astronomy, 2021, 卷号: 5, 页码: 414 作者:  Kirsten, F.;  Snelders, M. P.;  Jenkins, M.;  Nimmo, K.;  van den Eijnden, J. 收藏  |  浏览/下载：44/0  |  提交时间：2021/11/18 Astrophysics - High Energy Astrophysical Phenomena  Abstract: Fast radio bursts are millisecond-duration, bright radio signals (fluence 0.1-100 Jy ms) emitted from extragalactic sources of unknown physical origin. The recent CHIME/FRB and STARE2 detection of an extremely bright (fluence ~MJy ms) radio burst from the Galactic magnetar SGR 1935+2154 supports the hypothesis that (at least some) fast radio bursts are emitted by magnetars at cosmological distances. In follow-up observations totalling 522.7 h on source, we detect two bright radio bursts with fluences of 112 ± 22 Jy ms and 24 ± 5 Jy ms, respectively. Both bursts appear to be affected by interstellar scattering and we measure significant linear and circular polarization for the fainter burst. The bursts are separated in time by ~1.4 s, suggesting a non-Poissonian, clustered emission processsimilar to those seen in some repeating fast radio bursts. Together with the burst reported by CHIME/FRB and STARE2, as well as a much fainter burst seen by FAST (fluence 60 mJy ms), our observations demonstrate that SGR 1935+2154 can produce bursts with apparent energies spanning roughly seven orders of magnitude, and that the burst rate is comparable across this range. This raises the question of whether these four bursts arise from similar physical processes, and whether the fast radio burst population distribution extends to very low energies (~1030 erg, isotropic equivalent).   Development of dynamic synchrotron radiation circular dichroism spectroscopy using continuous-flow probe with microfluidic mixer 期刊论文 Spectroscopy and spectral analysis, 2017, 卷号: 37, 期号: 7, 页码: 2110-2114 作者:  Wang Hao;  Huang Yang;  Liu Zhi-tong;  Gao Zhen-hua;  Sun Da-rui 收藏  |  浏览/下载：21/0  |  提交时间：2019/04/23 Microfluidic mixing  Continuous flow  Synchrotron radiation circular dichroism  Protein folding   Probing the accretion disc structure by the twin kHz QPOs and spins of neutron stars in LMXBs 期刊论文 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 卷号: 466, 期号: 1, 页码: 1111-1117 作者:  Zhang, CM;  Lei, YJ;  Chen, L;  Zhi, QJ;  Qu, JL 收藏  |  浏览/下载：20/0  |  提交时间：2019/08/27 accretion, accretion discs  binaries: close  stars: neutron  X-rays: binaries   High voltage pulse gated power supply with adjustable pulse width 期刊论文 Proceedings of SPIE - The International Society for Optical Engineering, 2017, 卷号: 10256, 页码: 102563F 作者:  Yan, Baojun;  Yang, Yuzhen;  Wen, Kaile;  Yan BJ(闫保军);  Liu SL(刘术林) 收藏  |  浏览/下载：34/0  |  提交时间：2019/08/27 Image Intensifier  Power Gating  High-voltage Pulse   Development of Dynamic Synchrotron Radiation Circular Dichroism Spectroscopy Using Continuous-Flow Probe with Microfluidic Mixer 期刊论文 SPECTROSCOPY AND SPECTRAL ANALYSIS光谱学与光谱分析, 2017, 卷号: 37, 期号: 7, 页码: 2110-2114 作者:  Huang Y(黄艳);  Tao Y(陶冶);  Liu ZT(刘志桐);  Liu, ZT;  Gao, ZH 收藏  |  浏览/下载：15/0  |  提交时间：2019/08/27 Microfluidic mixing  Continuous flow  Synchrotron radiation circular dichroism  Protein folding   Timing features of the accretion-driven millisecond X-ray pulsar XTE J1807-294 in the 2003 March outburst 期刊论文 ASTROPHYSICAL JOURNAL, 2006, 卷号: 646, 期号: 2, 页码: 1116-1124 作者:  Zhang F(张帆);  Qu JL(屈进禄);  Chen W(陈尉);  Li TB(李惕碚);  Zhang, F 收藏  |  浏览/下载：19/0  |  提交时间：2016/06/29 accretion, accretion disks  binaries : close  stars : individual (XTE J1807-294)  stars : neutron