It has long been known that radio sources with the steepest spectra are preferentially associated with the most distant galaxies, the α - z relation, but the reason for this relation is an open question. The spatial distribution of spectra in high-z radio sources can be used to study this relation, and low-frequency observations are particularly important in understanding the particle acceleration and injection mechanisms. However, the small angular sizes of high-z sources together with the inherently low resolution of low-frequency radio telescopes until now has prevented high angular resolution low-frequency observations of distant objects. Here we present subarcsecond observations of a z = 2.4 radio galaxy at frequencies between 121 and ...
Recent investigations have shown that many parameters and assumptions made in the application of spe...
International audienceContext. Radio halos are megaparsec-scale diffuse radio sources mostly located...
We have examined the giant radio galaxy 3C 236 using LOFAR at 143 MHz down to an angular resolution ...
It has long been known that radio sources with the steepest spectra are preferentially associated wi...
It has long been known that radio sources with the steepest spectra are preferentially associated wi...
© ESO 2021. This is the accepted manuscript version of an article which has been published in final ...
The correlation between radio spectral index and redshift has been exploited to discover high-redshi...
The correlation between radio spectral index and redshift has been exploited to discover high-redshi...
This thesis uses novel observations from the Low Frequency Array to address open questions on the to...
In this paper, the second in a series investigating Fanaroff-Riley type II (FR II) radio galaxies at...
10 pages, 6 figuresWe have examined the giant radio galaxy 3C~236 using LOFAR at 143 MHz down to an ...
Recent investigations have shown that many parameters and assumptions made in the application of spe...
International audienceContext. Radio halos are megaparsec-scale diffuse radio sources mostly located...
We have examined the giant radio galaxy 3C 236 using LOFAR at 143 MHz down to an angular resolution ...
It has long been known that radio sources with the steepest spectra are preferentially associated wi...
It has long been known that radio sources with the steepest spectra are preferentially associated wi...
© ESO 2021. This is the accepted manuscript version of an article which has been published in final ...
The correlation between radio spectral index and redshift has been exploited to discover high-redshi...
The correlation between radio spectral index and redshift has been exploited to discover high-redshi...
This thesis uses novel observations from the Low Frequency Array to address open questions on the to...
In this paper, the second in a series investigating Fanaroff-Riley type II (FR II) radio galaxies at...
10 pages, 6 figuresWe have examined the giant radio galaxy 3C~236 using LOFAR at 143 MHz down to an ...
Recent investigations have shown that many parameters and assumptions made in the application of spe...
International audienceContext. Radio halos are megaparsec-scale diffuse radio sources mostly located...
We have examined the giant radio galaxy 3C 236 using LOFAR at 143 MHz down to an angular resolution ...