Limits on the Ultra-bright Fast Radio Burst Population from the CHIME Pathfinder
- Amiri, M.
- Bandura, K.
- Berger, P.
- Bond, J.R.
- Cliche, J.F.
- Connor, L.
- Deng, M.
- Denman, N.
- Dobbs, M.
- Domagalski, R.S.
- Fandino, M.
- Gilbert, A.J.
- Good, D.C.
- Halpern, M.
- Hanna, D.
- Hincks, A.D.
- Hinshaw, G.
- Höfer, C.
- Hsyu, G.
- Klages, P.
- Landecker, T.L.
- Masui, K.
- Mena-Parra, J.
- Newburgh, L.B.
- Oppermann, N.
- Pen, U.L.
- Peterson, J.B.
- Pinsonneault-Marotte, T.
- Renard, A.
- Shaw, J.R.
- Siegel, S.R.
- Sigurdson, K.
- Smith, K.
- Storer, E.
- Tretyakov, I.
- Vanderlinde, K.
- Wiebe, D.V.
DOIAbstract
We present results from a new incoherent-beam fast radio burst (FRB) search on the Canadian Hydrogen Intensity Mapping Experiment (CHIME) Pathfinder. Its large instantaneous field of view (FoV) and relative thermal insensitivity allow us to probe the ultra-bright tail of the FRB distribution, and to test a recent claim that this distribution’s slope, α \equiv -\tfrac{\partial {log}N}{\partial {log}S}, is quite small. A 256-input incoherent beamformer was deployed on the CHIME Pathfinder for this purpose. If the FRB distribution were described by a single power law with α = 0.7, we would expect an FRB detection every few days, making this the fastest survey on the sky at present. We collected 1268 hr of data, amounting to one of the largest ...
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