A new analytic approach to infer the cosmic-ray ionization rate in hot molecular cores from HCO${}^{+}$, N${}_2$H${}^{+}$, and CO observations

Gan Luo, Thomas G. Bisbas, Marco Padovani +1

The cosmic-ray ionization rate (${\zeta }_2$) is one of the key parameters in star formation, since it regulates the chemical and dynamical evolution of molecular clouds by ionizing molec…