654 citations
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17 papers · 1 filter
Searching in HI for Massive Low Surface Brightness Galaxies: Samples from HyperLeda and the UGC
K. O'Neil, Stephan E. Schneider, W. van Driel +4
A search has been made for 21 cm HI line emission in a total of 350 unique galaxies from two samples whose optical properties indicate they may be massive The first consists of 241…
LOFAR imaging of Cygnus A -- Direct detection of a turnover in the hotspot radio spectra
J. P. McKean, L. E. H. Godfrey, S. Vegetti +75
The low-frequency radio spectra of the hotspots within powerful radio galaxies can provide valuable information about the physical processes operating at the site of the jet termin…
A comparative analysis of Galactic extinction at low Galactic latitudes
A. C. Schröder, W. van Driel, R. C. Kraan-Korteweg
We use near-infrared (J-K)-colours of bright 2MASS galaxies, measured within a 7"-radius aperture, to calibrate the Schlegel et al. (1998) DIRBE/IRAS Galactic extinction map at low…
LeMMINGs. II. The e-MERLIN legacy survey of nearby galaxies. The deepest radio view of the Palomar sample on parsec scale
R. D. Baldi, D. R. A. Williams, I. M. McHardy +30
We present the second data release of high-resolution ( arcsec) 1.5-GHz radio images of 177 nearby galaxies from the Palomar sample, observed with the e-MERLIN array, as p…
Radio spectral properties and jet duty cycle in the restarted radio galaxy 3C388
M. Brienza, R. Morganti, J. Harwood +9
Restarted radio galaxies represent a unique tool to investigate the duty cycle of the jet activity in Active Galactic Nuclei. Due to a sharp discontinuity of the GHz spectral index…
First detection of frequency-dependent, time-variable dispersion measures
J. Y. Donner, J. P. W. Verbiest, C. Tiburzi +11
Context. High-precision pulsar-timing experiments are affected by temporal variations of the Dispersion Measure (DM), which are related to spatial variations in the interstellar el…