Speaker
Description
Recently, a wide range of gamma-ray-emitting binaries have been detected in TeV gamma rays, including microquasars, pulsar binaries, colliding-wind binaries, and novae. In this talk, I will focus on neutron star (NS) binaries powered either by accretion or by a pulsar wind, and discuss their potential relevance to sources detected by LHAASO, including LS I +61° 303 and SAX J2103.5+4545. I will introduce the basic properties of these sources and discuss the possible particle acceleration and radiation mechanisms. In general, accreting NS binaries can launch outflows, sometimes act as microquasars, and can produce X-ray bursts and outbursts. The outflows can interact with the interstellar medium, generating shocks and turbulence. In the case of pulsar wind binaries, the interaction between the pulsar wind and the stellar wind or circumstellar disk can also produce shocks and turbulence. Particles can be accelerated in shocks or turbulence, producing radiation locally (binary scale) or in the large-scale halo.
