A shock front at the radio relic of Abell 2744
A shock front at the radio relic of Abell 2744
复制标题
阿贝尔 2744 号无线电遗迹的激波前沿
DOI:
10.1093/mnras/stw1435
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发表时间:
2016
影响因子:
4.8
通讯作者:
Jauzac
中科院分区:
文献类型:
--
作者:
Eckert;Jauzac
Radio relics are Mpc-scale diffuse radio sources at the peripheries of galaxy clusters which are thought to trace outgoing merger shocks. We presentXMM–NewtonandSuzakuobservations of the galaxy cluster Abell 2744 (z= 0.306), which reveal the presence of a shock front 1.5 Mpc east of the cluster core. The surface-brightness jump coincides with the position of a known radio relic. Although the surface-brightness jump indicates a weak shock with a Mach number, the plasma in the post-shock region has been heated to a very high temperature (∼13 keV) by the passage of the shock wave. The low-acceleration efficiency expected from such a weak shock suggests that mildly relativistic electrons have been re-accelerated by the passage of the shock front.
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影响因子:
2.3
作者:
H. Akamatsu;H. Kawahara
通讯作者:
H. Akamatsu;H. Kawahara
影响因子:
4.8
作者:
H. Röttgering;M. Wieringa;R. Hunstead;R. Ekers
通讯作者:
R. Ekers
影响因子:
4.9
作者:
Markevitch, M;Govoni, F;Jerius, D
通讯作者:
Jerius, D
DOI:
10.1088/0004-637x/764/1/95
发表时间:
2012-12
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Hyesung Kang;D. Ryu
通讯作者:
Hyesung Kang;D. Ryu
影响因子:
6.5
作者:
E. Orrú;M. Murgia;L. Feretti;F. Govoni;G. Brunetti;G. Giovannini;M. Girardi;G. B. M. D. D. Fisica;U. Cagliari;I. Cagliari;I. D. Radioastronomia;D. A. U. Bologna;D. Astronomia;U. Trieste;Inaf Trieste
通讯作者:
Inaf Trieste