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Long Wavelength Spectral Studies of Giant Radio
Galaxies
Emanuela Orrù
University of Cagliari Osservatorio Astronomico
di Cagliari (Italy)
Collaborators L. Feretti, M. Murgia, G.
Giovannini, F. Govoni N. Kassim, W. Lane, R.
Perley.
IAU GA, Prague, 21 August 2006
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Overview
z LAS LLS P178 GRS 3C35 0.067
635? 1.1 Mpc 1.21026 W Hz-1
3C223 0.1368 306? 1.0 Mpc
7.71026 W Hz-1 Observations at 74 and 327 MHz
with the Very Large Array Spectral Analysis at
74, 327, 608 and 1400 MHz Results
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3C35
L band NVSS
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3C223
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4-L
4-P
P-L
3C35
4-P
P-L
3C223
4-L
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3C35
3C223
?inj?0.4
?inj?0.5
?inj ? ?b tsyn vadv Beq
0.5 2 3.7 GHz 60 Myr 0.02 c 3.5 ?G
0.7 2.4 1 GHz 110 Myr 0.013 c 1.2 ?G
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CONCLUSIONS
3C35 3C223 New Radio Images at 74 327
MHz. Comparison of the spectral behaviour. More
generally, we demonstrate that Long-Wavelength
observations are a powerful tool to discriminate
between Radiative losses and Adiabatic losses
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