%0 Generic %1 dasadia2016strong %A Dasadia, Sarthak %A Sun, Ming %A Sarazin, Craig %A Morandi, Andrea %A Markevitch, Maxim %A Wik, Daniel %A Feretti, Luigina %A Giovannini, Gabriele %A Govoni, Federica %A Vacca, Valentina %D 2016 %K cluster cold front merger shocks %T A Strong Merger Shock in Abell 665 %U http://arxiv.org/abs/1603.01271 %X Deep (103 ks) \chandra\ observations of Abell 665 have revealed rich structures in this merging galaxy cluster, including a strong shock and two cold fronts. The newly discovered shock has a Mach number of $M$ = 3.0 $\pm$ 0.6, propagating in front of a cold disrupted cloud. This makes Abell~665 the second cluster where a strong merger shock of $M \approx$ 3 has been detected, after the Bullet cluster. The shock velocity from jump conditions is consistent with (2.7 $\pm$ 0.7) $\times$ 10$^3$ km sec$^-1$. The new data also reveal a prominent southern cold front, with potentially heated gas ahead of it. Abell 665 also hosts a giant radio halo. There is a hint of diffuse radio emission extending to the shock at the north, which needs to be examined with better radio data. This new strong shock provides a great opportunity to study the re-acceleration model with the X-ray and radio data combined.

@misc{dasadia2016strong, abstract = {Deep (103 ks) \chandra\ observations of Abell 665 have revealed rich structures in this merging galaxy cluster, including a strong shock and two cold fronts. The newly discovered shock has a Mach number of $M$ = 3.0 $\pm$ 0.6, propagating in front of a cold disrupted cloud. This makes Abell~665 the second cluster where a strong merger shock of $M \approx$ 3 has been detected, after the Bullet cluster. The shock velocity from jump conditions is consistent with (2.7 $\pm$ 0.7) $\times$ 10$^3$ km sec$^{-1}$. The new data also reveal a prominent southern cold front, with potentially heated gas ahead of it. Abell 665 also hosts a giant radio halo. There is a hint of diffuse radio emission extending to the shock at the north, which needs to be examined with better radio data. This new strong shock provides a great opportunity to study the re-acceleration model with the X-ray and radio data combined.}, added-at = {2016-03-07T08:53:00.000+0100}, author = {Dasadia, Sarthak and Sun, Ming and Sarazin, Craig and Morandi, Andrea and Markevitch, Maxim and Wik, Daniel and Feretti, Luigina and Giovannini, Gabriele and Govoni, Federica and Vacca, Valentina}, biburl = {https://www.bibsonomy.org/bibtex/2f978f04be215740d6cc628bf9cfd843b/miki}, description = {[1603.01271] A Strong Merger Shock in Abell 665}, interhash = {d5e3524b836f7cd3312f569f20acd440}, intrahash = {f978f04be215740d6cc628bf9cfd843b}, keywords = {cluster cold front merger shocks}, note = {cite arxiv:1603.01271Comment: Accepted for publication in ApJL}, timestamp = {2016-03-07T08:53:00.000+0100}, title = {A Strong Merger Shock in Abell 665}, url = {http://arxiv.org/abs/1603.01271}, year = 2016 }