منابع مشابه
Radio Continuum and Emission Line Morphologies of Southern Seyfert Galaxies
Modern active galactic nuclei (AGN) research is greatly concerned with geometry. The radiation and absorption anisotropies, and the orientation to the line of sight, are fundamentally important for both the object classification and for understanding the physical nature of the copious energy release. There are two types of observed anisotropies – highly collimated radio emission, i.e., beams, j...
متن کاملNuclear radio emission in megaparsec-size radio galaxies
We present high resolution radio observations of the nuclear radio emission in a sample of eight radio galaxies having Megaparsec sizes, using the European VLBI network at 18 cm. At a resolution of 25 mas we detect all the giant radio galaxies from our sample. Among themDA 240 and 1331−099 were imaged for an extended period. These observations reveal a twin-jet structure for DA 240 and one-side...
متن کاملA Comparison of Radio and X-Ray Morphologies of Four Clusters of Galaxies Containing Radio Halos
Clusters of galaxies may contain cluster-wide, centrally located, diffuse radio sources, called halos. They have been found to show morphologies similar to those of the X-ray emission. To quantify this qualitative statement we performed a point-to-point comparison of the radio and the X-ray emission for four clusters of galaxies containing radio halos: Coma, Abell 2255, Abell 2319, Abell 2744. ...
متن کاملTwo 100 Mpc - scale structures in the 3 - D distribution of radio galaxies and their implications
We present unequivocal evidence for a huge (≈ 80 × 100 × 100 Mpc 3) superstructure at redshift z = 0.27 in the 3-D distribution of radio galaxies from the TONS08 sample, confirming tentative evidence for such a structure from the 7C red-shift survey (7CRS). A second, newly discovered superstructure is also less securely found at redshift 0.35 (of dimensions ≈ 100 × 100 × 100 Mpc 3). We present ...
متن کاملOptical Morphologies of Millijansky Radio Galaxies Observed by Hst and in the Vla First Survey
We report on a statistical study of the 51 radio galaxies at the millijansky flux level from the Faint Images of the Radio Sky at Twenty centimeters, including their optical morphologies and structure obtained with the Hubble Space Telescope. Our optical imaging is significantly deeper (∼2 mag) than previous studies with the superior angular resolution of space-based imaging. We that find 8/51 ...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1996
ISSN: 0074-1809
DOI: 10.1017/s0074180900080906