We use archival COBE/DIRBE data to construct a map of polycyclic aromatic hydrocarbon (PAH) emission in the $\lambda$-Orionis region. The presence 3.3 $\mu$m PAH feature within DIRBE 3.5 band and corresponding lack significant spectral features adjacent bands (1.25, 2.2, 4.9 $\mu$m) enable estimation contribution data. Having shortest wavelength known features, probes smallest PAHs, which are a...

Abstract The cosmic-ray flux of positrons is measured with high precision by the space-borne particle spectrometer AMS-02. hypothesis that pulsar wind nebulae (PWNe) can significantly contribute to excess positron ( e +) has been consolidated after observation a γ -ray emission at TeV energies few degree size around Geminga and Monogem PWNe. In this work we undertake massive simulations galacti...

New two nano- sized Schiff base complexes [M(L)], where L= 2, 2'-((1E, 1E')-(1, 2 phenylen bis (azanylylidene)) bis (methanylylidene)) bis (4-bromo phenolato) and M=Cu or Zn, (a, b complexes) were synthesized by ultrasonic irradiation. These complexes were characterized by elemental analysis, molar conductivity, FT-IR, fluorescence emission, 1H NMR, field emission scanning electron spectroscopy...