Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phdt.........5v&link_type=abstract
Thesis (PHD). UNIVERSITY OF MAINE , Source DAI-B 58/04, p. 1927, Oct 1997, 195 pages.
Astronomy and Astrophysics
Astronomy
2
Scientific paper
Recently, several head-tail sources were discovered in poor clusters of galaxies, many more than had been expected from rich cluster studies and models for such morphologies. In this project we selected and observed four nearby poor cluster head-tail sources, using the Very Large Array of radio telescopes, at wavelengths of 6 cm and 20 cm. The data were processed and analyzed using the Astronomical Image Processing System software. The highly surprising result is that there is not much difference in the head-tail phenomenon between the rich and the poor cluster cases. Almost all physical parameters of head-tails studied in this project (jet luminosities, jet radii of curvature, density of the immediate environments, minimum pressures, spectral indices, fractional polarizations, magnetic field structures) are very similar between the two cases. We conclude that strikingly similar environments in both cases are the cause behind this result. Our conclusion implies relatively high galaxy velocities (≈600 km s-1, 3 times the expected poor cluster average) for the poor cluster head-tail sources. We further conclude that such high velocities are the result of these poor clusters being dynamically young and still collapsing.
No associations
LandOfFree
Head-Tail Sources in Poor Clusters of Galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Head-Tail Sources in Poor Clusters of Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Head-Tail Sources in Poor Clusters of Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1157733