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182 papers · 1 filter
Radio Tests of GR
E. Fomalont, S. Kopeikin
Since VLBI techniques give microarcsecond position accuracy of celestial objects, tests of GR using radio sources as probes of a gravitational field have been made. We present the…
Pinpointing the TeV gamma-ray emission region in M87 using TeV and 43 GHz radio monitoring
R. M. Wagner, M. Beilicke, F. Davies +8
The TeV radio galaxy M87 is the first radio galaxy detected in the TeV regime. The structure of its jet, which is not pointing towards our line of sight, is spatially resolved in X…
Recent VLBA/VERA/IVS Tests of General Relativity
E. Fomalont, S. Kopeikin, D. Jones +2
We report on recent VLBA/VERA/IVS observational tests of General Relativity. First, we will summarize the results from the 2005 VLBA experiment that determined gamma with an accura…
The Evolution of Luminous Compact Blue Galaxies: Disks or Spheroids?
D. J. Pisano, C. Garland, K. Rabidoux +4
Luminous compact blue galaxies (LCBGs) are a diverse class of galaxies characterized by high luminosities, blue colors, and high surface brightnesses. Residing at the high luminosi…
The Detection of Anomalous Dust Emission in the Nearby Galaxy NGC 6946
E. J. Murphy, G. Helou, J. J. Condon +6
We report on the Ka-band (26-40 GHz) emission properties for 10 star-forming regions in the nearby galaxy NGC 6946. From a radio spectral decomposition, we find that the 33 GHz flu…
First Detection of Ammonia in the Large Magellanic Cloud: The Kinetic Temperature of Dense Molecular Cores in N159W
Juergen Ott, Christian Henkel, Lister Staveley-Smith +1
The first detection of ammonia (NH3) is reported from the Magellanic Clouds. Using the Australia Telescope Compact Array, we present a targeted search for the (J,K) = (1,1) and (2,…