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      A decade of fast radio bursts

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          Abstract

          Modern astrophysics is undergoing a revolution. As detector technology has advanced, and astronomers have been able to study the sky with finer temporal detail, a rich diversity of sources which vary on timescales from years down to a few nanoseconds has been found. Among these are Fast Radio Bursts, with pulses of millisecond duration and anomalously high dispersion compared to Galactic pulsars, first seen a decade ago. Since then, a new research community is actively working on a variety of experiments and developing models to explain this new phenomenon, and devising ways to use them as astrophysical tools. In this article, I describe how astronomers have reached this point, review the highlights from the first decade of research in this field, give some current breaking news, and look ahead to what might be expected in the next few years.

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          A NEW ELECTRON-DENSITY MODEL FOR ESTIMATION OF PULSAR AND FRB DISTANCES

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            A bright millisecond radio burst of extragalactic origin

            Pulsar surveys offer one of the few opportunities to monitor even a small fraction (~0.00001) of the radio sky for impulsive burst-like events with millisecond durations. In analysis of archival survey data, we have discovered a 30-Jy dispersed burst of duration <5 ms located three degrees from the Small Magellanic Cloud. The burst properties argue against a physical association with our Galaxy or the Small Magellanic Cloud. Current models for the free electron content in the Universe imply a distance to the burst of <1 Gpc No further bursts are seen in 90-hr of additional observations, implying that it was a singular event such as a supernova or coalescence of relativistic objects. Hundreds of similar events could occur every day and act as insightful cosmological probes.
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              Pulsating Radio Sources near the Crab Nebula.

              Two new pulsating radio sources, designated NP 0527 and NP 0532, were found near the Crab Nebula and could be coincident with it. Both sources are sporadic, and no periodicities are evident. The pulse dispersions indicate that 1.58 +/- 0.03 and 1.74 +/- 0.02 x 10(20) electrons per square centimeter lie in the direction of NP 0527 and NP 0532, respectively.
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                Author and article information

                Journal
                31 October 2018
                Article
                1811.00195
                55cd9201-517e-4d80-96cd-686244d11815

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

                History
                Custom metadata
                12 pages, 3 figures, published in Nature Astronomy. A SharedIt link to the actual pdf file as it appeared in Nature can be found at https://rdcu.be/basFY
                astro-ph.HE

                High energy astrophysical phenomena
                High energy astrophysical phenomena

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