Rfc 5039

RFC 5039 SIP Spam

Spam, defined as the transmission of bulk unsolicited messages, has plagued Internet email. Unfortunately, spam is not limited to email. It can affect any system that enables user-to-user communications. The Session Initiation Protocol (SIP) defines a system for user-touser multimedia communications. Therefore, it is susceptible to spam, just as email is. In this document, we analyze the proble...

GeV - TeV gamma - ray light curves expected in the IC e ± pair cascade model for massive binaries : Application to LS 5039

Context. TeV gamma-ray emission from two massive binaries of the microquasar type, LS 5039 and LS I +61o 303, show clear variability with their orbital periods. Aims. Our purpose is to calculate the GeV and TeV γ-ray light curves from the massive binary LS 5039 which are expected in the specific Inverse Compton e pair cascade model. This model successfully predicted the basic features of the hi...

On the magnetic field and the TeV emitter location in Cygnus X - 1 and LS 5039

Context. Cygnus X-1 and LS 5039 are two X-ray binaries detected at TeV energies. Both sources are compact systems, contain jetlike (radio) structures, and harbor very luminous O stars. The two systems show TeV signal around the superior conjunction of the compact object, when the largest gamma-ray opacities are expected. Aims. We investigate the implications of the TeV detections of Cygnus X-1 ...

The American Board of Internal Medicine.

Spectral energy distribution of the gamma - ray microquasar LS 5039

The microquasar LS 5039 has recently been detected as a source of very high energy (VHE) γ-rays. This detection, that confirms the previously proposed association of LS 5039 with the EGRET source 3EG J1824−1514, makes of LS 5039 a special system with observational data covering nearly all the electromagnetic spectrum. In order to reproduce the observed spectrum of LS 5039, from radio to VHE γ-r...