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Climatology of Mid-latitude Ionospheric Disturbances from the Very Large Array Low-frequency Sky Survey
J. F. Helmboldt, W. M. Lane, W. D. Cotton
The results of a climatological study of ionospheric disturbances derived from observations of cosmic sources from the Very Large Array (VLA) Low-frequency Sky Survey (VLSS) are pr…
Insights into the nature of northwest-to-southeast aligned ionospheric wavefronts from contemporaneous Very Large Array and ionosondes observations
J. F. Helmboldt
The results of contemporaneous summer nighttime observations of midlatitude medium scale traveling ionospheric disturbances (MSTIDs) with the Very Large Array (VLA) in New Mexico a…
VLSS Redux: Software Improvements applied to the Very Large Array Low-frequency Sky Survey
W. M. Lane, W. D. Cotton, J. F. Helmboldt +1
We present details of improvements to data processing and analysis which were recently used for a re-reduction of the Very Large Array (VLA) Low-frequency Sky Survey (VLSS) data. A…
Very Large Array Observations of Disturbed Ion Flow from the Plasmasphere to the Nighttime Ionosphere
Joseph Helmboldt, Huib Intema
We present the results of a multi-scale analysis of TEC fluctuations using a roughly five-hour observation of the bright radio source Virgo A with the Very Large Array (VLA) at 74…
Parsec-Scale Radio Properties of Gamma-Ray Emitting Blazars
J. D. Linford, G. B. Taylor, R. W. Romani +4
The parsec-scale radio properties of blazars detected by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope have been investigated using observations with…
A New Technique for Spectral Analysis of Ionospheric TEC Fluctuations Observed with the Very Large Array VHF System: From QP Echoes to MSTIDs
J. F. Helmboldt, T. J. W. Lazio, H. T. Intema +1
We have used a relatively long, contiguous VHF observation of a bright cosmic radio source (Cygnus A) with the Very Large Array (VLA) through the nighttime, midlatitude ionosphere…