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浏览/检索结果: 共11条，第1-10条 帮助 限定条件 发表日期：2021     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 Spectropolarimetry and photometry of the early afterglow of the gamma-ray burst GRB 191221B 期刊论文 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2021, 卷号: 506, 期号: 3, 页码: 4621-4631 作者:  Buckley, D A H;  Bagnulo, S;  Britto, R J;  Mao JR(毛基荣);  Kann, D A 收藏  |  浏览/下载：53/0  |  提交时间：2022/01/24 magnetic fields  gamma-ray bursts  high energy astrophysics  polarimetry  shocks  jets   Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign 期刊论文 The Astrophysical Journal Letters, 2021, 卷号: 911, 期号: 1 作者:  Algaba,J. C.;  Anczarski,J.;  Asada,K.;  Balokovi?,M.;  Chandra,S. 收藏  |  浏览/下载：148/0  |  提交时间：2021/05/24 Active galactic nuclei  Radio cores  Low-luminosity active galactic nuclei  High energy astrophysics  Astrophysical black holes  Accretion   First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon 期刊论文 ASTROPHYSICAL JOURNAL LETTERS, 2021, 卷号: 910, 期号: 1 作者:  Akiyama, Kazunori;  Algaba, Juan Carlos;  Alberdi, Antxon;  Alef, Walter;  Anantua, Richard 收藏  |  浏览/下载：90/0  |  提交时间：2021/04/19 Accretion  Black holes  Event horizons  Jets  Kerr black holes  Magnetic fields  Magnetohydrodynamics  Plasma astrophysics  Polarimetry  Radiative transfer  Radio jets  Relativistic jets   HXMT identification of a non-thermal X-ray burst from SGR J1935+2154 and with FRB 200428 期刊论文 Nature Astronomy, 2021, 卷号: 5, 页码: 378-384 作者:  Li, C. K.;  Lin, L.;  Xiong, S. L.;  Ge, M. Y.;  Li, X. B. 收藏  |  浏览/下载：59/0  |  提交时间：2021/11/18 Astrophysics - High Energy Astrophysical Phenomena  Astrophysics -  Instrumentation and Methods for Astrophysics   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：42/0  |  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).   Search for gamma-ray bursts and gravitational wave electromagnetic counterparts with High Energy X-ray Telescope of Insight-HXMT 期刊论文 Monthly Notices of the Royal Astronomical Society, 2021, 卷号: 508, 页码: 3910 作者:  Cai, C.;  Xiong, S. L.;  Li, C. K.;  Liu, C. Z.;  Zhang, S. N. 收藏  |  浏览/下载：28/0  |  提交时间：2021/11/18 gravitational waves  methods: observational  gamma-ray bursts  Astrophysics - High Energy Astrophysical Phenomena   Luminosity Dependence of the Cyclotron Line Energy in 1A 0535+262 Observed by Insight-HXMT during the 2020 Giant Outburst 期刊论文 The Astrophysical Journal, 2021, 卷号: 917, 页码: L38 作者:  Kong, L. D.;  Zhang, S.;  Ji, L.;  Reig, P.;  Doroshenko, V. 收藏  |  浏览/下载：10/0  |  提交时间：2021/11/18 X-ray astronomy  High mass x-ray binary stars  Pulsars  1810  733  1306  Astrophysics - High Energy Astrophysical Phenomena   Physical origin of the non-physical spin evolution of MAXI J1820 + 070 期刊论文 Monthly Notices of the Royal Astronomical Society, 2021, 卷号: 504, 页码: 2168 作者:  Guan, J.;  Tao, L.;  Qu, J. L.;  Zhang, S. N.;  Zhang, W. 收藏  |  浏览/下载：56/0  |  提交时间：2021/11/18 accretion  accretion discs  black hole physics  stars: individual  (MAXI J1820 + 070)  X-rays: binaries  Astrophysics - High Energy  Astrophysical Phenomena  83C57   QPOs and orbital elements of X-ray binary 4U 0115+63 during the 2017 outburst observed by Insight-HXMT 期刊论文 Monthly Notices of the Royal Astronomical Society, 2021, 卷号: 503, 页码: 6045 作者:  Ding, Y. Z.;  Wang, W.;  Zhang, P.;  Bu, Q. C.;  Cai, C. 收藏  |  浏览/下载：22/0  |  提交时间：2021/11/18 stars: individual: 4U 0115+63  X-rays: binaries  X-rays: stars  Astrophysics - High Energy Astrophysical Phenomena   Study on the Energy Limits of kHz QPOs in Sco X-1 with RXTE and Insight-HXMT Observations 期刊论文 The Astrophysical Journal, 2021, 卷号: 913, 页码: 119 作者:  Jia, S. M.;  Qu, J. L.;  Lu, F. J.;  Zhang, S. N.;  Zhang, S. 收藏  |  浏览/下载：15/0  |  提交时间：2021/11/18 X-ray binary stars  1811  Astrophysics - High Energy Astrophysical  Phenomena