Calculations of the far-infrared emission of C24H12 under interstellar conditions

This paper presents the first calculations which have been performed to predict the band profile and intensity of the low-frequency flopping modes of polycyclic aromatic hydrocarbons under interstellar conditions. The numerical simulations are based on a molecular description of the involved photophysical processes and include all available molecular data. We present the results of these calculations for the molecule C24H12, emphasizing the need for further laboratory studies. The importance of this work for future astronomical observations is underlined.