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Radio detections of southern ultracool dwarfs
C. Lynch, T. Murphy, V. Ravi +3
We report the results of a volume-limited survey using the Australia Telescope Compact Array to search for transient and quiescent radio emission from 15 southern hemisphere ultrac…
Pulsar Observations of Extreme Scattering Events
W. A. Coles, M. Kerr, R. M. Shannon +17
Extreme scattering events (ESEs) in the interstellar medium (ISM) were first observed in regular flux measurements of compact extragalactic sources. They are characterized by a flu…
The magnetosphere of the ultracool dwarf DENIS 1048-3956
V. Ravi, G. Hallinan, G. Hobbs +1
Ultracool dwarfs, the least-massive contributors to the stellar mass function, exhibit striking magnetic properties that are inconsistent with trends for more massive stars. Here,…
Fundamental Stellar Properties from Optical Interferometry
Gerard T. van Belle, Jason Aufdenberg, Tabetha Boyajian +7
High-resolution observations by visible and near-infrared interferometers of both single stars and binaries have made significant contributions to the foundations that underpin man…
The many faces of Betelgeuse
V. Ravi, E. H. Wishnow, S. Lockwood +1
The dynamics of the surface and inner atmosphere of the red supergiant star Betelgeuse are the subject of numerous high angular resolution and spectroscopic studies. Here, we prese…
Observations of radio pulses from CU Virginis
V. Ravi, G. Hobbs, D. Wickramasinghe +7
The magnetic chemically peculiar star CU Virginis is a unique astrophysical laboratory for stellar magnetospheres and coherent emission processes. It is the only known main sequenc…