Starburst galaxies (SBGs) and more in general star forming galaxies represent a
class of galaxies with a high star formation rate (up to 100 Mo/year). Despite their
low luminosity, they can be considered as guaranteed “factories” of high energy
neutrinos, being “reservoirs” of accelerated cosmic rays and hosting a high density
target gas in the central region. The estimation of their point-like and diffuse
contributions to the neutrino astrophysical flux measured by IceCube can be crucial
to describe the diffuse neutrino spectral features as well as the peculiar point-like
excesses. To this aim we used the most updated gamma-ray catalog of this class
of objects to perform a multimessenger study and describe their gamma-ray
emission through a calorimetric scenario. On the other hand the 79 neutrinos at
tera–electron volt energies observed by IceCube in coincidence with NCG1068 are
hardly described considering only the starburst emission and additional emission
components, related to the hosted active galactic nucleus (AGN), should be
comprised. A comprehensive AGN-starburst scenario will be discussed for this
special case taking into account the last observations of ALMA.
