Innocenza Busà (INAF-OACT) gives an overview of the Catania’s LSST team ongoing work for the S5 INAF’s In-kind Contributions.
After establishing spectroscopic observational constraints that allow the identification of charge exchange (CX) reactions between fast protons and hydrogen atoms, we explore how these spectroscopic constraints turn into photometric signatures in extended sources where the main emission in the photometric bands come from Balmer lines. The method allows photometrically identifying new CRs accelerators observing their close-by environments crossed by the high-energy particles. In particular, the hydrogen spectroscopic emission is expected to be so modified, with respect to the recombination Balmer decrement, to result in a very different r-g color index.
Corroborated by cross correlation with radio, X and gamma maps the method will make LSST able to produce the first high resolution Galactic map of Cosmic Rays sources.