Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2009-08-04
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
Accepted for publication in MNRAS, 13 pages, 10 figures, 6 tables
Scientific paper
We present multi-frequency radio observations with the Giant Metrewave Radio Telescope and Very Large Array, and X-ray observations with the X-ray Multi-Mirror Mission ({\it XMM-Newton}) telescope of the giant radio source (GRS) 3C 457. We have detected the core, lobes and the environment of the GRS in X-ray. We examine the relationships between the radio and X-ray emission, determine the radio spectrum over a large frequency range and attribute the X-ray emission from the lobes to the inverse-Compton scattering of cosmic microwave background (CMB) photons. The magnetic field strength of the lobes is very close to the equipartition value. Both the lobes are in pressure balance near the hotspots and apparently under-pressured towards the core. The X-ray spectrum of the core of the GRS consists of an unabsorbed soft power-law component and a heavily absorbed hard power-law component. The soft unabsorbed component is likely to be related to the radio jets. There is no strong evidence of Fe K$\alpha$ emission line in our data.
Croston Judith H.
Hardcastle Martin J.
Konar Chiranjib
Saikia D. J.
No associations
LandOfFree
The dynamics of the giant radio galaxy 3C 457 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 The dynamics of the giant radio galaxy 3C 457, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The dynamics of the giant radio galaxy 3C 457 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-557008