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Ordered magnetic fields around the 3C 84 central black hole
期刊论文
ASTRONOMY & ASTROPHYSICS, 2024, 卷号: 682
作者:
Paraschos, G. F.
;
Kim, J.-Y.
;
Wielgus, M.
;
Röder, J.
;
Krichbaum, T. P.
收藏
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浏览/下载:10/0
  |  
提交时间:2024/04/15
techniques: high angular resolution
techniques: interferometric
galaxies: active
galaxies: individual: NGC 1275
galaxies: jets
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:45/0
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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).
An agile very low frequency radio spectrum explorer
期刊论文
Research in Astronomy and Astrophysics, 2021, 卷号: 21, 期号: 4, 页码: 139-148
作者:
Chen,Linjie
;
Yan,Yihua
;
Fan,Qiuxiang
;
Geng,Lihong
;
Bisoi, Susanta Kumar
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浏览/下载:0/0
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提交时间:2024/06/13
An ALMA survey of the brightest sub-millimetre sources in the SCUBA-2-COSMOS field
期刊论文
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 卷号: 495, 期号: 3, 页码: 3409-3430
作者:
Simpson, J. M.
;
Smail, Ian
;
Dudzeviciute, U.
;
Matsuda, Y.
;
Hsieh, B-C
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  |  
浏览/下载:40/0
  |  
提交时间:2020/08/03
galaxies: evolution
galaxies: formation
galaxies: high-redshift
sub-millimetre: galaxies
Variability in extragalactic class I methanol masers: new maser components towards NGC 4945 and NGC 253
期刊论文
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 卷号: 491, 期号: 4, 页码: 4642-4655
作者:
McCarthy, T. P.
;
Ellingsen, S. P.
;
Breen, S. L.
;
Voronkov, M. A.
;
Chen, X.
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2020/11/09
masers
galaxies: starburst
radio lines: galaxies
Variability in extragalactic class I methanol masers: new maser components towards NGC 4945 and NGC 253
期刊论文
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 卷号: 491, 期号: 4, 页码: 4642-4655
作者:
McCarthy, T. P.
;
Ellingsen, S. P.
;
Breen, S. L.
;
Voronkov, M. A.
;
Chen, X.
收藏
  |  
浏览/下载:14/0
  |  
提交时间:2021/09/26
masers
galaxies: starburst
radio lines: galaxies
The Giant Radio Array for Neutrino Detection (GRAND): Science and design
期刊论文
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
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浏览/下载:16/0
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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
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
Multifrequency Study of GHz-peaked Spectrum Sources
期刊论文
ASTROPHYSICAL BULLETIN, 2019, 卷号: 74, 期号: 4, 页码: 348-364
作者:
Sotnikova, Yu, V
;
Mufakharov, T., V
;
Majorova, E. K.
;
Mingaliev, M. G.
;
Udovitskii, R. Yu
收藏
  |  
浏览/下载:1/0
  |  
提交时间:2021/09/26
radio continuum: galaxies
galaxies: active, nuclei
A high-resolution self-consistent whole sky foreground model
期刊论文
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2019, 卷号: 62, 期号: 8, 页码: 13
作者:
Huang, QiZhi
;
Wu, FengQuan
;
Chen, XueLei
收藏
  |  
浏览/下载:32/0
  |  
提交时间:2020/03/10
neutral hydrogen
21 cm line
foreground model
whole sky map
simulation
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