Positron Annihilation on Polycyclic Aromatic Hydrocarbon molecules in the Interstellar Medium

(2) CESR CNRS/Universite de Toulouse; (3) KTH AlbaNova University Centre Stockholm); N. Guessoum (1); P. Jean (2); W. Gillard (3) ((1) American University of Sharjah

arxiv: 0911.0582 · v1 · pith:OJFNQQ2Nnew · submitted 2009-11-03 · 🌌 astro-ph.HE · astro-ph.GA

Positron Annihilation on Polycyclic Aromatic Hydrocarbon molecules in the Interstellar Medium

N. Guessoum (1) , P. Jean (2) , W. Gillard (3) ((1) American University of Sharjah , (2) CESR CNRS/Universite de Toulouse , (3) KTH AlbaNova University Centre Stockholm) This is my paper

classification 🌌 astro-ph.HE astro-ph.GA

keywords annihilationpahsaromaticgalactichydrocarboninterstellarmediummolecules

0 comments

read the original abstract

We examine the annihilation of positrons on polycyclic aromatic hydrocarbon (PAH) molecules in interstellar medium conditions. We estimate the annihilation rates of positrons on PAHs by a semi-empirical approach. We show that PAHs can play a significant role in the overall galactic positron annihilation picture and use the annihilation rates and INTEGRAL galactic emission measurements to constrain the amount of PAHs present in the ISM. We find an upper limit of 4.6 x 10^-7 for the PAH abundance.

This paper has not been read by Pith yet.

Positron Annihilation on Polycyclic Aromatic Hydrocarbon molecules in the Interstellar Medium

discussion (0)