Universe Today quotes Arp. Shock and awe: In Your Eyes - The NGC 4486 Jet by JP Metsavainio.
“The shred itself, however, is the object of most significance for establishing the reality of the ejection of the radio source. It is difficult to make a quantitative statement, but objects of this nature are not frequently seen. The inference is plain that the radio source has either left a wake behind it, (i.e. condensations along its track) or that this is some kind of jet or material associated with the ejection of the radio source form the parent peculiar galaxy.”
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