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| Paper: |
VSOP Observations of the Gamma-Ray Sources J1733−1304, J1625−2527, and J1015+4926 |
| Volume: |
402, Approaching Micro-Arcsecond Resolution with VSOP-2: Astrophysics and Technologies |
| Page: |
112 |
| Authors: |
Nakagawa, A.; Murata, Y.; Edwards, P.G.; Wajima, K.; Omodaka, T. |
| Abstract: |
We present results from VSOP and VLBA observations of the active galactic nuclei J1733−1304, J1625−2527, and J1015+4926. These sources have been identified as possible counterparts to gamma-ray sources in the third EGRET catalog. In general, the counterparts to extragalactic EGRET sources have very compact structure, with brightness temperatures (Tb) greater than 1011-1012K. We compare the images of the three sources with previously published images and also examine jet motions and spectral indices. The measured Tb of J1733−1304 are an order of magnitude lower than those of previous measurements, suggesting the VSOP observations were made while the source was in a relatively quiescent state. The relatively low Tb of J1625−2527 is also consistent with the highly variable nature of this source. A comparison of the VSOP observation of J1015+4926 with a VLBA image suggests the existence of stationary jet components. |
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