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The intensity of FRB 150807 at different radio frequencies or colors -- red corresponds to lower frequencies and blue to higher frequencies. The x-axis is time. The fine structure in the burst is the scintillation or twinkling--the rays interfere constructively and destructively differently at different frequencies. This pattern provides insights into the turbulence in plasma towards the burst.

Bright radio bursts probe universe’s hidden matter

Fast radio bursts, or FRBs, are mysterious flashes of radio waves originating outside our Milky Way galaxy. A team of scientists, jointly led by Caltech postdoctoral scholar Vikram Ravi and Curtin University research fellow Ryan Shannon, has now observed the most luminous FRB to date, called FRB 150807. Though astronomers still do not know what […]