Conveners
Parallel 4: Binaries
- David Buckley (South African Astronomical Observatory)
The gamma-ray binary HESS J0632+057 has been observed at very-high energies (E>100 GeV) for more than ten years by the major systems of imaging atmospheric Cherenkov telescopes H.E.S.S., MAGIC, and VERITAS together with observations at X-ray energies and measurements of the Halpha emission line. We present a summary of the results including correlation studies between different energy bands...
PSR B1259-63 is a gamma-ray binary system hosting a radio pulsar orbiting around a massive young star, LS 2883, with a period of ∼3.4 years. The interaction of the pulsar wind with the LS 2883 outflow leads to unpulsed broadband emission in the radio, X-ray, GeV, and TeV domains. One of the most unusual features of the system is an outburst of GeV energies around the periastron, during which...
Cyg X-3 is unique among accreting X-ray binaries in being a powerful source of gamma rays. Also, its gamma-ray emission, associated with major radio flares, takes place mostly in the soft spectral state. This is different from other accreting binaries, in which the radio emission is strongly quenched in the soft state. Detailed analysis of the gamma-ray, radio and X-ray emission from Cyg X-3...
Gamma-ray binaries are a rare class of high mass binary systems that show persistent gamma-ray emission. The systems consist of an O or B/Be stars in orbit with a compact object in the mass range of a neutron star or black hole. The compact object for the majority of these systems is most likely a non-accreting pulsar, and the non-thermal emission originates from the shock that forms between...
Gamma-ray binaries are a small subclass of high mass binaries, consisting of O or B/Be type stars and a compact object (in the mass range of a neutron star or black hole), that produce multiwavelength non-thermal emission up to TeV energies. The gamma-ray binary HESS J0632+057 still has no clear orbital solution, required to correctly interpret how the non-thermal emission is produced by the...
In light of the recent detections of multiple gravitational-wave events, originating from both neutron-star and binary-black-hole mergers, we simulate the dynamics of ambient test particles in the gravitational potential well of a BBH system close to its inspiral phase with the goal of simulating the associated electromagnetic radiation and resulting spectral energy density distribution of...
