Conveners
Exploring the Galaxy: Binaries: Parallel-2
- Piet Mientjes
Gamma-ray binaries are a relatively new subclass of High Mass X-ray binaries visible from radio up to very high (TeV) energies. At the moment only a handful such sources (less than 10) are regularly observed at TeV and GeV energies. Only in two of these systems, PSR B1259-63 and PSR J2032+4127 we are sure on the nature of the compact objects, as these systems are wide enough to detect...
Gamma-ray binaries are a rare class of binary system which produce non-thermal emission which peaks in the gamma-ray regime and so far, only seven sources have been firmly identified. These systems consist of a O/B type star and either a neutron star or a black hole compact object. Establishing the orbital parameters of gamma-ray binaries is a crucial requirement for modelling the emission...
The high-mass accreting binary Cyg X-3 is distinctly different from low-mass X-ray binaries (LMXBs) in having radio and gamma-ray emitting jets in its soft spectral state. Furthermore, those jets are much brighter in both radio and gamma-rays than those in the hard state of this object. Analysis of those emissions (Zdziarski et al. 2018) yields the location and the profiles of the orbital...
Microquasars, the local siblings of extragalactic quasars, are binary systems comprising a compact object and a companion star. By accreting matter from their companions, microquasars launch powerful winds and jets, influencing the interstellar environment around them. Steady gamma-ray emission is expected to rise from their central objects, or from interactions between their outflows and the...
Gamma-ray binaries are a small but growing class of sources which comprises of binary systems where the spectral energy distribution peaks above 1 MeV. Gamma-ray photons emitted in binary systems are subject to gamma-gamma absorption as they travel through a photon field created by a massive star. Moreover, gamma-gamma absorption might be the main reason for the characteristic decrease of the...
Unlike in supernova remnants or pulsar-wind nebulae, the characterization of high-energy and very-high-energy emission in binary systems allows the study of particle acceleration in shocks under periodically varying conditions. However, less than ten massive stars with non-accreting neutron star companions have been found to radiate most of their electromagnetic emission in gamma-rays....
