25 citations · 51 across the 8 of their papers we have counts for
9 papers
Distances to Galactic methanol masers
K. L. J. Rygl, A. Brunthaler, K. M. Menten +2
We present the first EVN parallax measurements of 6.7 GHz methanol masers in star forming regions of the Galaxy. The 6.7 GHz methanol maser transition is a very valuable astrometri…
Dual-frequency VSOP Imaging of a High-redshift Radio Quasar PKS 1402+044
Jun Yang, Leonid Gurvits, Andrei Lobanov +2
Based on the VLBI Space Observatory Programme (VSOP) observations at 1.6 and 5 GHz, we find that the luminous high-redshift (z=3.215) quasar PKS 1402+044 (J1405+0415) has a pronoun…
Green Bank Telescope observations of the water masers of NGC 3079: accretion disk magnetic field and maser scintillation
W. H. T. Vlemmings, H. E. Bignall, P. J. Diamond
We present observations of the 22 GHz water megamasers in the circumnuclear disk of NGC 3079 obtained with the Green Bank Telescope. The data are analyzed for circular polarization…
Water masers in the Local Group of galaxies
A. Brunthaler, C. Henkel, W. J. G. de Blok +3
We compare the number of detected 22 GHz H2O masers in the Local Group galaxies M31, M33, NGC6822, IC10, IC1613, DDO187, GR8, NGC185, and the Magellanic Clouds with the water maser…
The extreme flare in III Zw 2: Evolution of a radio jet in a Seyfert galaxy
A. Brunthaler, H. Falcke, G. C. Bower +3
A very detailed monitoring of a radio flare in the Seyfert I galaxy III Zw 2 with the VLA and the VLBA is presented. The relative astrometry in the VLBA observations was precise on…
Hidden bipolarity in red supergiant winds
A. M. S. Richards, M. R. W. Masheder, H. J. van Langevelde +7
Many observations of late-type M stars show large near-spherical circumstellar envelopes, yet planetary nebulae and supernova remnants are frequently axisymmetric. We present VLBI…