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A recent change in the optical and γ-ray polarization of the Crab nebula and pulsar
Paul Moran, Gillian Kyne, Christian Gouiffes +5
We report on observations of the polarization of optical and γ-ray photons from the Crab nebula and pulsar system using the Galway Astronomical Stokes Polarimeter (GASP), the Hubbl…
Auroral radio emission from late L and T dwarfs: A new constraint on dynamo theory in the substellar regime
Melodie M. Kao, Gregg Hallinan, J. Sebastian Pineda +4
We have observed 6 late-L and T dwarfs with the Karl G. Jansky Very Large Array (VLA) to investigate the presence of highly circularly polarized radio emission, associated with lar…
Next Generation Very Large Array Memo No. 9 Science Working Group 4: Time Domain, Fundamental Physics, and Cosmology
Geoffrey C. Bower, Paul Demorest, James Braatz +20
We report here on key science topics for the Next Generation Very Large Array in the areas of time domain, fundamental physics, and cosmology. Key science cases considered are puls…
An investigation of the Eigenvalue Calibration Method (ECM) using GASP for non-imaging and imaging detectors
Gillian Kyne, David Lara, Gregg Hallinan +2
Polarised light from astronomical targets can yield a wealth of information about their source radiation mechanisms, and about the geometry of the scattered light regions. Optical…
Radio Emission and Orbital Motion from the Close-Encounter Star-Brown Dwarf Binary WISE J072003.20-084651.2
Adam J. Burgasser, Carl Melis, Jacob Todd +3
We report the detection of radio emission and orbital motion from the nearby star-brown dwarf binary WISE J072003.20-084651.2AB. Radio observations across the 4.5-6.5 GHz band with…
Magnetospherically driven optical and radio aurorae at the end of the stellar main sequence
G. Hallinan, S. P. Littlefair, G. Cotter +12
Aurorae are detected from all the magnetized planets in our Solar System, including Earth. They are powered by magnetospheric current systems that lead to the precipitation of ener…