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收藏资源简介:
Relics are diffuse radio sources thought to trace shocks at the periphery of merging clusters. LOFAR comma with its unique resolution and sensitivity comma is revolutionizing the field by opening a new window of discovery. The LOFAR survey recently discovered a rare example of double relics in a low-mass cluster comma confirmed as a 3doublePoint1 merger by our Cy21 Chandra observations. The bright relics are located exceptionally far away from the cluster core -- at about R500 openPar1.3 MpcclosePar. The properties of the radio sources are hard to reconcile with current relic formation models comma given the low cluster mass. We propose XMM-Newton observations to study the luminosity and temperature substructure comma understand the cluster merger history and place tight constraints on relic formation models.



