Real-time detection of an extreme scattering event: Constraints on Galactic plasma lenses

@article{Bannister2016RealtimeDO,
  title={Real-time detection of an extreme scattering event: Constraints on Galactic plasma lenses},
  author={Keith W. Bannister and Jamie Stevens and Artem V. Tuntsov and Mark A. Walker and Simon Johnston and Cormac Reynolds and Hayley E. Bignall},
  journal={Science},
  year={2016},
  volume={351},
  pages={354 - 356}
}
Identifying live radio scattering events Radio emissions from distant quasars are occasionally modified for a few weeks by foreground interstellar plasma, in an extreme scattering event (ESE). Understanding this process has been difficult, because existing techniques do not allow events to be identified fast enough for follow-up before they finish. Bannister et al. developed a radio survey technique that allows ESEs to be identified in real time. After finding their first live ESE, they… 
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LARGE fluctuations in the radio emissions from the quasar 0954 + 658 (ref. 1) attest to the existence of large-scale inhomogeneities in the ionized interstellar medium. These fluctuations, termed
VLA Polarization Observations of the Extragalactic Source 1741-038 During an Extreme Scattering Event
The extragalactic radio source 1741-038 underwent an extreme scattering event in 1992. Near the middle of the event and 1.5 yr after the end of the event we obtained Faraday rotation observations of
VLBA observations of a rare multiple quasar imaging event caused by refraction in the interstellar medium
Aims. We have investigated highly atypical morphological parsec-scale changes in the flat spectrum extragalactic radio source 2023+335 which are coincident with an extreme scattering event (ESE) seen
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The Extreme Scattering Event toward 1741–038: H I Absorption
We report multi-epoch Very Large Array H I absorption observations of the source 1741-038 (OT -068) before and during an extreme scattering event (ESE). Observations at four epochs, three during the
A 3 Year Long Extreme Scattering Event in the Direction of the Millisecond Pulsar J1643-1224
An extreme scattering event (ESE) has been detected in the direction of the millisecond pulsar J1643-1224 at 1.28 and 1.41 GHz. Its duration is 3 years and this makes it the longest ESE ever
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"Extreme scattering events" (ESEs) are attributed to radio wave refraction by a cloud of free electrons crossing the line of sight. We present a new model in which these electrons form the
A Search for Stellar Obscuration Events Due to Dark Clouds
The recent detections of a large population of faint submillimeter sources, an excess halo γ-ray background, and the extreme scattering events observed for extragalactic radio sources have been
A Very Rapid Extreme Scattering Event in the IDV Source 0954+658
Abstract Extreme scattering events (ESEs) are dramatic variations of the flux density at gigahertz frequencies caused by ray path distortions within an isolated inhomogeneity (‘plasma lens’) in the
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