Letter to the Editor γ-ray evidence for galactic in-situ electron acceleration

Time-dependent Synchrotron and Compton Spectra from Microquasar Jets

Jet models for the high-energy emission of Galactic X-ray binary sources have regained significant interest with detailed spectral and timing studies of the X-ray emission from microquasars, the recent detection by the HESS collaboration of very-high-energy $\gamma$-rays from the microquasar LS~5039, and the earlier suggestion of jet models for ultraluminous X-ray sources observed in many nearb...

Letter to the Editor: Barriers Associated With Evidence Based Practice among Nurses in Iran

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Agn Models: High-energy Emission

Astrophysical models for the high-energy emission of blazars are reviewed. Blazars ejecting relativistic radio jets at small angles to the line-of-sight are the only type of active galactic nuclei (AGN) discovered above 100 MeV. The γ-rays apparently originate in the jets which explains the absence of γ-ray pair creation attenuation. The bulk Lorentz factor of the radio jets is much smaller tha...

Guide Wire J-Tip Technique for Easy Exchange of In Situ Endotracheal Tubes

Letter to the Editor Evidence from Voyager and ISEE-3 spacecraft Data for the decay of secondary K-electron capture isotopes during the propagation of cosmic rays in the Galaxy

New data from the cosmic ray experiment on the Voyager spacecraft confirms and extends earlier data from a similar experiment on the ISEE-3 spacecraft which indicates the possibility of the decay of certain K-capture isotopes during the interstellar propagation of galactic cosmic rays. These cosmic ray measurements, along with the cross section measurements, indicate that ∼ 25% of the K-capture...