ner_tags: O O O O O O B-Observatory I-Observatory O O O O O O O O O O O B-Telescope O O B-Telescope O O O B-Telescope B-Location I-Location O O B-Organization I-Organization I-Organization O B-Location I-Location B-Person O O O O O B-Organization I-Organization I-Organization O O B-Grant I-Grant O O O O O O O O O O O O O O O O
tokens: We thank the staff of the Karoo Observatory for their invaluable assistance in the commissioning and operation of the KAT-7 telescope. The KAT-7 is supported by SKA South Africa and the National Science Foundation of South Africa. AMS gratefully acknowledges support from the European Research Council under grant ERC-2012-StG-307215 LODESTONE. We also thank the anonymous referee for their careful reading of this manuscript and useful comments.