Bowman, Judd DCairns, Iver HughBernardi, GBriggs, FranklinDeshpande, AvinashdeSouza, LudiGreenhill, LincolnKincaid, Barton BMatthews, Lynn DPrabu, TRogers, AlanSrivani, K. S.Waterson, MarkWhitney, AlanWilliams, Christopher L2015-12-131323-3580http://hdl.handle.net/1885/73937Significant new opportunities for astrophysics and cosmology have been identified at low radio frequencies. The Murchison Widefield Array is the first telescope in the southern hemisphere designed specifically to explore the low-frequency astronomical skyKeywords: dark ages; first stars; instrumentation: interferometers; radio continuum: general; radio lines: general; reionisation; Sun: general201310.1017/pas.2013.0092016-02-24