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5 papers · 1 filter
Orientation and Speed of the Parsec-Scale Jet in NGC4261 (3C270)
B. Glenn Piner, Dayton L. Jones, Ann E. Wehrle
NGC4261 (3C270) is an elliptical galaxy containing a 300-parsec scale nuclear disk of gas and dust imaged by the Hubble Space Telescope (HST), around a central supermassive black h…
29-Si NMR and Hidden Order in URu2Si2
O. O. Bernal, C. Rodrigues, A. Martinez +4
We present new 29-Si NMR spectra in URu2Si2 for varying temperature T, and external field H. On lowering T, the systematics of the low-field lineshape and width reveal an extra com…
The Pearson-Readhead Survey of Compact Extragalactic Radio Sources From Space. I. The Images
M. L. Lister, S. J. Tingay, D. W. Murphy +3
We present images from a space-VLBI survey using the facilities of the VLBI Space Observatory Programme (VSOP), drawing our sample from the well-studied Pearson-Readhead survey of…
In the Shadow of the Accretion Disk: Higher Resolution Imaging of the Central Parsec in NGC 4261
Dayton L. Jones, Ann E. Wehrle, B. Glenn Piner +1
The physical conditions in the inner parsec of accretion disks believed to orbit the central black holes in active galactic nuclei can be probed by imaging the absorption (by ioniz…
Measuring the brightness temperature distribution of extragalactic radio sources with space VLBI
S. J. Tingay
We have used VSOP space very long baseline interferometry observations to measure the brightness temperature distribution of a well-defined sub-set of the Pearson-Readhead sample o…