ner_tags: O O O O O O O O O B-Organization B-Grant I-Grant O B-Grant O O O O O O B-Person I-Person I-Person O O O O O O O O B-Citation I-Citation I-Citation I-Citation I-Citation I-Citation O O O O O B-Person I-Person O O O O O O O O O O O B-Person I-Person I-Person O O O O O O O O B-Person I-Person O O O B-Telescope O O
tokens: ACKNOWLEDGEMENTS This work was supported in part by the NWO DRIFT project (contract 628.002.002). The authors would like to thank Ahmad Mouri Sardarabadi for discussions on an initial idea captured in Naghibzadeh et al. ( 2016b ) which evolved into this paper, Patrick Dewilde for in-depth discussions and comments regarding the algorithm and the paper, Martin van Gijzen for discussions regarding the iteratively reweighted algorithms and Stefan Wijnholds for providing the lofar station data.