@article {2012MNRAS.422..510R,
	title = {{EVN observations of the farthest and brightest ULIRGs in the local Universe: the case of IRAS 23365+3604}},
	journal = {Monthly Notices of the Royal Astronomical Society},
	volume = {422},
	year = {2012},
	month = {may},
	pages = {510-520},
	abstract = {We present high-resolution, high-sensitivity radio images of the ultra-luminous infrared galaxy (ULIRG) IRAS 23365+3604. We performed contemporaneous observations at 1.7 and 5.0 GHz, in three epochs separated by 1 year from each other, with the European Very Long Baseline Interferometry (VLBI) Network (EVN). We also present complementary Multi-Element Radio Linked Interferometry Network (MERLIN) at 1.6 and 5.0 GHz, and archival Very Large Array data, taken at 1.4 and 4.9 GHz. We find that the emission at {\tilde}5.0 GHz remains quite compact as seen at different resolutions, whereas at {\tilde}1.7 GHz, high-resolution imaging reveals some extended structure. The nuclear region has an approximate linear size of 200 pc and shows the presence of two main emission components: (i) one with a composite spectrum due to ongoing non-thermal activity (probably due to recently exploded supernovae and the presence of an active galactic nucleus), and (ii) the other with a steep spectrum, likely dominated by an old population of radio emitters, such as supernova remnants. Radiative losses are important, so re-acceleration or replenishment of new electrons is necessary. We estimate a magnetic field strength of {\tilde} 18 {$μ$}G at galactic and {\tilde} 175 {$μ$}G at nuclear scales, which are typical for galaxies in advanced mergers.},
	keywords = {galaxies: individual: IRAS 23365+3604, galaxies: starburst, radio continuum: general},
	doi = {10.1111/j.1365-2966.2012.20627.x},
	url = {http://adsabs.harvard.edu/abs/2012MNRAS.422..510R},
	author = {Romero-Ca{\~n}izales, C. and M. A. P{\'e}rez-Torres and Alberdi, A.}
}
