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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.
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浏览/下载:46/0
  |  
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 (~10
30
erg, isotropic equivalent).
Detection of Flare Multiperiodic Pulsations in Mid-ultraviolet Balmer Continuum, Lyl Hard X-Ray, and Radio Emissions Simultaneously
期刊论文
The Astrophysical Journal, 2021, 卷号: 921, 页码: 179
作者:
HXMT
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浏览/下载:14/0
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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
The Hyperluminous, Dust-obscured Quasar W2246-0526 at z=4.6: Detection of Parsec-scale Radio Activity
期刊论文
The Astrophysical Journal Letters, 2020, 卷号: 905, 期号: 2, 页码: 7
作者:
Fan, Lulu
;
Chen W(陈文)
;
An, Tao
;
Xie, Fu-Guo
;
Han YK(韩云坤)
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浏览/下载:86/0
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提交时间:2021/01/25
High-redshift galaxies
Quasars
Radio continuum emission
High-luminosity active galactic nuclei
Optical Emission Spectroscopy Diagnostics of Atmospheric Pressure Radio Frequency Ar-H-2 Inductively Coupled Thermal Plasma
期刊论文
IEEE TRANSACTIONS ON PLASMA SCIENCE, 2020, 卷号: 48, 期号: 10, 页码: 3621-3628
作者:
Zhang, Haibao
;
Yuan, Fangli
;
Chen, Qiang
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2021/03/29
Plasma temperature
Radio frequency
Electron tubes
Integrated optics
Stimulated emission
Hydrogen
Diagnostics
electron excitation temperature
inductively coupled thermal plasma (ICTP)
optical emission spectroscopy (OES)
thermal efficiency
Wide Bandwidth Observations of Pulsars C, D, and J in 47 Tucanae
期刊论文
ASTROPHYSICAL JOURNAL LETTERS, 2019, 卷号: 885, 期号: 2, 页码: L37
作者:
Zhang, Lei
;
Hobbs, George
;
Manchester, Richard N.
;
Li, Di
;
Wang, Pei
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2020/03/12
Globular star clusters
Radio continuum emission
Pulsars
Wide Bandwidth Observations of Pulsars C, D, and J in 47 Tucanae
期刊论文
The Astrophysical Journal Letters, 2019, 卷号: 885, 期号: 2
作者:
Zhang,Lei
;
Hobbs,George
;
Manchester,Richard N.
;
Li,Di
;
Wang,Pei
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2020/03/10
Globular star clusters
Radio continuum emission
Pulsars
Extended Catalog of Winged or X-shaped Radio Sources from the FIRST Survey
期刊论文
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2019, 卷号: 245, 期号: 1, 页码: 17
作者:
Yang, Xiaolong
;
Joshi, Ravi
;
Gopal-Krishna
;
An, Tao
;
Ho, Luis C.
收藏
  |  
浏览/下载:27/0
  |  
提交时间:2020/03/12
Active galactic nuclei
Catalogs
Jets
Quasars
Radio continuum emission
Surveys
Localized Microwave and EUV Bright Structures in an Eruptive Prominence
期刊论文
The Astrophysical Journal, 2019, 卷号: 874, 期号: 2
作者:
Huang,Jing
;
Tan,Baolin
;
Masuda,Satoshi
;
Cheng,Xin
;
Kumar Bisoi,Susanta
收藏
  |  
浏览/下载:9/0
  |  
提交时间:2020/03/10
Sun: filaments, prominences
Sun: particle emission
Sun: radio radiation
Sun: UV radiation
Jet-powered Outflows in Supermassive Black Hole Binary Candidate SDSS J1048+0055
期刊论文
ASTROPHYSICAL JOURNAL, 2019, 卷号: 873, 期号: 1, 页码: 7
作者:
Jaiswal, Sumit
;
Mohan, Prashanth
;
An, Tao
;
Frey, Sandor
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  |  
浏览/下载:60/0
  |  
提交时间:2019/04/19
black hole physics
galaxies: active
galaxies: individual (SDSS J1048+0055)
quasars: emission lines
radio continuum: galaxies
Jet-powered Outflows in Supermassive Black Hole Binary Candidate SDSS J1048+0055
期刊论文
ASTROPHYSICAL JOURNAL, 2019, 卷号: 873, 期号: 1, 页码: 7
作者:
Jaiswal, Sumit
;
Mohan, Prashanth
;
An, Tao
;
Frey, Sandor
收藏
  |  
浏览/下载:47/0
  |  
提交时间:2019/05/23
black hole physics
galaxies: active
galaxies: individual (SDSS J1048+0055)
quasars: emission lines
radio continuum: galaxies
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