Tuesday, 13 January 2009, at 2.00pm at the JAC
University of Nottingham, U.K.
"Searching for Polycyclic Aromatic Hydrocarbons in Space"
Recent observational results demonstrate that PAHs are
abundant, ubiquitous and a dominant force in the interstellar medium;
mid-infrared emission bands are a typical example. Variations
observed in mid-IR bands reflect the existence of different PAH
populations in different ISM environments. In this context, I will
discuss results of theoretical modeling on different PAH size groups and
the information obtained from synthesized spectra. PAHs are also
considered to be potential carriers of Diffuse Interstellar Bands
(DIBs). I will talk about our recent work on protonated PAHs and what
makes them attractive DIB carrier candidates.