163 citations · 218 across the 5 of their papers we have counts for
5 papers
Impact of Electron Precipitation on Brown Dwarf Atmospheres and the Missing Auroral H Emission
J. Sebastian Pineda, Gregg Hallinan, Jean Michel Desert +1
Recent observations have demonstrated that very-low mass stars and brown dwarfs are capable of sustaining strong magnetic fields despite their cool and neutral atmospheres. These k…
CHIMERA Occultation Constraints on the Abundance of Kilometer-scale Kuiper Belt Objects
Qicheng Zhang, Gregg W. Hallinan, Navtej S. Saini +3
Occultations provide indirect sensitivity to the number density of small Kuiper Belt objects (KBOs) too faint to directly detect telescopically. We present results from the Caltech…
Constraints on the Growth and Spin of the Supermassive Black Hole in M32 From High Cadence Visible Light Observations
R. Chary, G. Hallinan, L. K. Harding +2
We present 1-second cadence observations of M32 (NGC221) with the CHIMERA instrument at the Hale 200-inch telescope of the Palomar Observatory. Using field stars as a baseline for…
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…
Periodic Optical Variability of Radio Detected Ultracool Dwarfs
Leon K. Harding, Gregg Hallinan, Richard P. Boyle +5
A fraction of very low mass stars and brown dwarfs are known to be radio active, in some cases producing periodic pulses. Extensive studies of two such objects have also revealed o…