机构

• 国家天文台 [8]
• 高能物理研究所 [7]
• 理论物理研究所 [1]
• 新疆天文台 [1]

采集方式

• OAI收割 [17]

内容类型

• 期刊论文 [17]

发表日期

• 2022 [1]
• 2020 [10]
• 2019 [1]
• 2015 [1]
• 2013 [1]
• 2012 [2]
• 更多

学科主题

• Astronomy ... [4]
• Physics [2]

筛选

浏览/检索结果: 共17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 Prospective study on observations of γ-ray sources in the Galaxy using the HADAR experiment 期刊论文  OAI收割 Frontiers of Physics, 2022, 卷号: 17, 期号: 6, 页码: 64602 作者:  Qian, Xiangli;  Sun, Huiying;  Chen, Tianlu;  Danzengluobu;  Feng, Youliang   |  收藏  |  浏览/下载：24/0  |  提交时间：2023/11/10 HADAR  Galactic sources  significance  gamma rays  radiation, Cherenkov  energy, threshold  showers, atmosphere  beam, width  energy, low  galaxy  statistical  TeV  cosmic radiation  sensitivity  air  flux  imaging  gamma ray  VHE  pulsar  supernova   Jet Properties of Compact Steep-spectrum Sources and an Eddington-ratio-driven Unification Scheme of Jet Radiation in Active Galactic Nuclei 期刊论文  OAI收割 The Astrophysical Journal, 2020, 卷号: 899, 期号: 1 作者:  Zhang,Jin;  Zhang,Hai-Ming;  Gan,Ying-Ying;  Yi,Ting-Feng;  Wang,Jun-Feng   |  收藏  |  浏览/下载：32/0  |  提交时间：2021/12/06 Active galactic nuclei  Relativistic jets  Compact galaxies  Gamma-rays  Non-thermal radiation sources   Hadronic versus Leptonic Models for γ-Ray Emission from VER J2227+608 期刊论文  OAI收割 The Astrophysical Journal Letters, 2020, 卷号: 897, 期号: 2 作者:  Liu,Siming;  Zeng,Houdun;  Xin,Yuliang;  Zhu,Hui   |  收藏  |  浏览/下载：17/0  |  提交时间：2021/12/06 Galactic cosmic rays  Gamma-ray sources  Non-thermal radiation sources  Gamma-ray astronomy  Extended radiation sources  Supernova remnants  Diffuse nebulae  Rotation powered pulsars  Cosmic ray sources  Cosmic ray astronomy  Astrophysical processes  Ultra-high-energy cosmic radiation   A Large Population of Obscured AGN in Disguise as Low-luminosity AGN in Chandra Deep Field South 期刊论文  OAI收割 The Astrophysical Journal, 2020, 卷号: 897, 期号: 2 作者:  Lambrides,Erini L.;  Chiaberge,Marco;  Heckman,Timothy;  Gilli,Roberto;  Vito,Fabio   |  收藏  |  浏览/下载：13/0  |  提交时间：2021/12/06 Active galactic nuclei  AGN host galaxies  Active galaxies  X-ray active galactic nuclei  Optical observation  Infrared sources  Extragalactic radio sources  Surveys   Leptonic or Hadronic Emission: The X-Ray Radiation Mechanism of Large-scale Jet Knots in 3C 273 期刊论文  OAI收割 ASTROPHYSICAL JOURNAL, 2020, 卷号: 893, 期号: 1, 页码: 11 作者:  Wang, Zhen-Jie;  Zhang, Jin;  Sun, Xiao-Na;  Liang, En-Wei   |  收藏  |  浏览/下载：19/0  |  提交时间：2021/12/06 Galaxy jets  Active galactic nuclei  Non-thermal radiation sources  X-ray active galactic nuclei   An Extreme X-Ray Variability Event of a Weak-line Quasar 期刊论文  OAI收割 The Astrophysical Journal Letters, 2020, 卷号: 889, 期号: 2 作者:  Ni,Q.;  Brandt,W. N.;  Yi,W.;  Luo,B.;  Timlin,J. D.   |  收藏  |  浏览/下载：24/0  |  提交时间：2021/09/26 X-ray active galactic nuclei  Active galaxies  Quasars  X-ray quasars  Radio quiet quasars  X-ray sources   The GBT Diffuse Ionized Gas Survey: Tracing the Diffuse Ionized Gas around the Giant Hii Region W43 期刊论文  OAI收割 The Astrophysical Journal, 2020, 卷号: 889, 期号: 2 作者:  Luisi,Matteo;  Anderson,L. D.;  Liu,Bin;  Balser,Dana S.;  Bania,T. M.   |  收藏  |  浏览/下载：29/0  |  提交时间：2020/03/10 Interstellar medium  Galactic radio sources  Radio astronomy  Interstellar abundances  HII regions  Warm ionized medium  Surveys  Photodissociation regions   The Giant Radio Array for Neutrino Detection (GRAND): Science and design 期刊论文  OAI收割 SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2020, 卷号: 63, 期号: 1, 页码: 43 作者:  Alvarez-Muniz, Jaime;  Batista, Rafael Alves;  Balagopal, Aswathi, V;  Bolmont, Julien;  Bustamante, Mauricio   |  收藏  |  浏览/下载：28/0  |  提交时间：2021/09/26 radio telescopes  neutrinos in astronomical observations  cosmic rays in astronomical observations  radiowave radiation: sources  galactic and extragalactic  cosmic rays: galactic and extragalactic   Three body first post-Newtonian effects on the secular dynamics of a compact binary near a spinning supermassive black hole 期刊论文  OAI收割 PHYSICAL REVIEW D, 2020, 卷号: 102, 期号: 10, 页码: 104002 作者:  Fang, Yun;  Huang, Qing-Guo   |  收藏  |  浏览/下载：27/0  |  提交时间：2021/09/27 GRAVITATIONAL-WAVE SOURCES  GALACTIC NUCLEI  MERGERS  PERTURBATIONS   No pulsed radio emission during a bursting phase of a Galactic magnetar 期刊论文  OAI收割 Nature, 2020, 卷号: 587, 页码: 63-65 作者:  HXMT   |  收藏  |  浏览/下载：44/0  |  提交时间：2022/02/08 Astrophysics - High Energy Astrophysical Phenomena  Abstract: Fast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical origin observed at extragalactic distances1-3. It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources4-13, but no convincing evidence has been collected so far14. Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft íray bursts15. One FRB-like event with two peaks (FRB 200428) and a luminosity slightly lower than the faintest extragalactic FRBs was detected from the source, in association with a soft íray/hard-X-ray flare18-21. Here we report an eight-hour targeted radio observational campaign comprising four sessions and assisted by multi-wavelength (optical and hard-X-ray) data. During the third session, 29 soft-íray repeater (SGR) bursts were detected in íray energies. Throughout the observing period, we detected no single dispersed pulsed emission coincident with the arrivals of SGR bursts, but unfortunately we were not observing when the FRB was detected. The non-detection places a fluence upper limit that is eight orders of magnitude lower than the fluence of FRB 200428. Our results suggest that FRB-SGR burst associations are rare. FRBs may be highly relativistic and geometrically beamed, or FRB-like events associated with SGR bursts may have narrow spectra and characteristic frequencies outside the observed band. It is also possible that the physical conditions required to achieve coherent radiation in SGR bursts are difficult to satisfy, and that only under extreme conditions could an FRB be associated with an SGR burst.