MERGHERS：使用MeerKAT进行的SZ选择聚类调查
MERGHERS: An SZ-selected cluster survey with MeerKAT
摘要：
MeerKAT望远镜将成为前SKA时代最灵敏的射电阵列之一。在这里，我们讨论一个低频SZ选择集群调查与MeerKAT，MeerKAT扩展遗迹，巨大的晕，河外射电源（MERGHERS）调查。这次巡天的主要目标是探测弥散星团发射的微弱特征，特别是射电晕和遗迹。SZ选择的集群样本提供了一个均匀的，质量有限的一组目标，以更高的红移比X射线样本。MeerKAT的灵敏度足以探测到低质量和高红移星系团中微弱水平的漫射射电辐射，从而使射电晕和遗迹形成理论能够在显着扩展的相空间上用更大的统计样本进行测试。补充性多波长后续观测将提供一个更完整的图片，任何集群发现主机扩散发射，从而提高了MERGHERS调查的科学回报。
英文摘要：
The MeerKAT telescope will be one of the most sensitive radio arrays in the pre-SKA era. Here we discuss a low-frequency SZ-selected cluster survey with MeerKAT, the MeerKAT Extended Relics, Giant Halos, and Extragalactic Radio Sources (MERGHERS) survey. The primary goal of this survey is to detect faint signatures of diffuse cluster emission, specifically radio halos and relics. SZ-selected cluster samples offer a homogeneous, mass-limited set of targets out to higher redshift than X-ray samples. MeerKAT is sensitive enough to detect diffuse radio emission at the faint levels expected in low-mass and high-redshift clusters, thereby enabling radio halo and relic formation theories to be tested with a larger statistical sample over a significantly expanded phase space. Complementary multiwavelength follow-up observations will provide a more complete picture of any clusters found to host diffuse emission, thereby enhancing the scientific return of the MERGHERS survey.
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