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Expanding Radio Lobe associated with 3C 84

Published online by Cambridge University Press:  07 April 2020

Keiichi Asada ,
Makoto Inoue ,
Hiroshi Nagai  and
Seiji Kameno
Keiichi Asada
Affiliation:
Institute of Astronomy & Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei10617, Taiwan email: asada@asiaa.sinica.edu.tw
Makoto Inoue
Affiliation:
Institute of Astronomy & Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei10617, Taiwan email: asada@asiaa.sinica.edu.tw
Hiroshi Nagai
Affiliation:
National Astronomical Observatory of Japan, 2-21-1, Osawa, Tokyo, 181-8588, Japan
Seiji Kameno
Affiliation:
National Astronomical Observatory of Japan, 2-21-1, Osawa, Tokyo, 181-8588, Japan
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Abstract

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Following the discovery of the expansion of a young radio lobe associated with the bright radio source 3C 84 in the Seyfert galaxy NGC 1275 using VSOP monitoring observation with duration of 3 years, we further investigated its evolution by utilizing VLBA monitoring data taken by MOJAVE project. As the results, we confirmed the expanding motion of both the southern and northern lobes, and detected side-way expanding motions for the first time. In meantime, the total flux density of the lobes are decreasing, while total flux density associated with the nuclei is significantly increasing. This cooling of the radio lobe can be well-explained with the energy loss through the adiabatic cooling.

Keywords

3C 84VLBIradio lobeCSO
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S342: Perseus in Sicily: From Black Hole to Cluster Outskirts , May 2018 , pp. 220 - 221
Copyright
© International Astronomical Union 2020

References

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