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Thread: Fast Radio Burst Identified? Not so fast...

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    Default Fast Radio Burst Identified? Not so fast...



    Unfortunately, the recent fast radio burst identification may be spurious. Time will tell...

    Cosmological Origin for FRB 150418? Not So Fast
    P. K. G. Williams, E. Berger
    http://arxiv.org/pdf/1602.08434.pdf

    Abstract: Keane et al. (2016) have recently claimed to have obtained the first precise localization for a Fast Radio Burst thanks to the identification of a contemporaneous fading slow (∼week-timescale) radio transient. We show that the quiescent radio luminosity of the proposed host galaxy points to the presence of an AGN, and therefore that the claimed transient may instead represent common AGN variability. We further show that the expected number of variable (rather than transient) sources in the Parkes localization region of FRB 150418 is order unity. Finally we show that the properties of the radio counterpart are incompatible with a synchrotron-emitting blastwave. Taken together, these results indicate that the claimed radio source is unlikely to be associated with FRB 150418, and hence that a precise localization and redshift determination cannot be justified.
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  2. The Following 6 Users Say Thank You to MCox For This Useful Post:

    bladekeeper (03-01-2016),chas53 (03-01-2016),kencrowder (03-01-2016),not_Fritz_Argelander (03-01-2016),Shellshock187 (03-01-2016),stargazer55 (03-01-2016)

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    Default Re: Fast Radio Burst Identified? Not so fast...

    Thanks for this really useful correction. The folks claiming the FRB are going to have to do some very serious explaining. I have doubts whether they will be able to defend their claim. We'll see though.
    chas53, bladekeeper and Testgear like this.

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