Preliminary results of a search for radio halos in starburst galaxies

C.A. GALANTE; J. SAPONARA; ROMERO, GUSTAVO E; BENAGLIA, P

Boletín de la Asociación Argentina de Astronomía

Asociación Argentina de Astronomía

Año: 2023

1669-9521

Starburst galaxies undergo intense episodes of star formation. In these galaxies, gas is ejected intothe surroundings in the form of strong winds, produced by the combined effect of numerous supernova explosions.When these winds interact with the intergalactic medium, they give rise to strong shocks that are capableof accelerating cosmic rays. The radiation from these rays in radio wavelengths is generated by synchrotronmechanism and can be detected when the galaxies are seen “edge-on” (i.e., its inclination is ∼ 90o with the line ofsight). In this work, we investigate a sub-sample of edge-on galaxies in the MeerKAT 1.28 GHz Atlas of SouthernSources in the IRAS Revised Bright Galaxy Sample. To carry out an analysis of individual galaxies that allows usto find radio emission outside the galactic disk attributable to the presence of the wind, a software was developedand tested, which we detail in this work. We present here the results obtained using this software for a sub-groupof galaxies that have been studied in the past using low-resolution observations, and we compare both results.