Sgr A^∗ as a potential source of galactic PeV neutrinos

Pev protons in the galactic center (GC) was detected by H.E.S.S. collaboration. The highest possible energy of the proton from the Sgr A* is proposed to be 170 PeV. Proton having this much energy will interact with the molecular hydrogens present in plenty near the origin and background photons. The time scale of p-p interaction is very small compared to the p-γ interaction time scale. Also plenty molecular hydrogen presents in the Galaxy makes the p-p channel more efficient than other possible channels. p-p interactions will generate pions (π^o, π⁺, π⁻). Neutral pions will decay into gamma rays, where as charged pions produces various neutrinos and anti neutrinos. n_H = 1cm⁻³ is considered. Although in various paper GC region ISM density is considered to be much higher n_H = 120cm⁻³