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- Netherlands Institute for Radio AstronomyNL123 papers
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12 papers · 2 filters
A Compact Extreme Scattering Event Cloud Towards AO 0235+164
C. E. Senkbeil, S. P. Ellingsen, J. E. J. Lovell +3
We present observations of a rare, rapid, high amplitude Extreme Scattering Event toward the compact BL-Lac AO 0235+164 at 6.65 GHz. The ESE cloud is compact; we estimate its diame…
First images of 6.7-GHz methanol masers in DR21(OH) and DR21(OH)N
L. Harvey-Smith, R. Soria-Ruiz, A. Duarte-Cabral +1
The first images of 6.7-GHz methanol masers in the massive star-forming regions DR21(OH) and DR21(OH)N are presented. By measuring the shapes, radial velocities and polarization pr…
Deep Extragalactic VLBI-Optical Survey (DEVOS) II. Efficient VLBI detection of SDSS quasars
S. Frey, L. I. Gurvits, Z. Paragi +3
Context: The Deep Extragalactic VLBI-Optical Survey (DEVOS) aims at constructing a large sample of compact radio sources up to two orders of magnitude fainter than those studied in…
The VSOP 5 GHz Active Galactic Nucleus Survey: V. Imaging Results for the Remaining 140 sources
R. Dodson, E. B. Fomalont, K. Wiik +21
In February 1997, the Japanese radio astronomy satellite HALCA was launched to provide the space-bourne element for the VLBI Space Observatory Programme (VSOP) mission. Approximate…
A deep, high resolution survey of the low frequency radio sky
Emil Lenc, Mike A. Garrett, Olaf Wucknitz +2
We report on the first wide-field, very long baseline interferometry (VLBI) survey at 90 cm. The survey area consists of two overlapping 28 deg^2 fields centred on the quasar J0226…
Observations of Intrahour Variable Quasars: Scattering in our Galactic Neighbourhood
H. E. Bignall, D. L. Jauncey, J. E. J. Lovell +3
Interstellar scintillation (ISS) has been established as the cause of the random variations seen at centimetre wavelengths in many compact radio sources on timescales of a day or l…