Gamma-rays from cascades in close massive binaries containing energetic pulsars

Abstract

Some massive binaries should contain energetic pulsars which inject relativistic leptons from their inner magnetospheres and/or pulsar wind regions. If the binary system is compact enough, then these leptons can initiate inverse Compton (IC) $e^{\pm }$ pair cascades in the anisotropic radiation field of a massive star. $\gamma$-rays can be produced in the IC cascade during its development in a pulsar wind region and above a shock in a massive star wind region where the propagation of leptons is determined by the structure of a magnetic field around the massive star. For a binary system with specific parametres, we calculate phase dependent spectra and fluxes of $\gamma$-rays escaping as a function of the inclination angle of the system and for different assumptions on injection conditions of the primary leptons (their initial spectra and location of the shock inside the binary). We conclude that the features of $\gamma$-ray emission from such massive binaries containing energetic pulsars should allow to obtain important information on the acceleration of particles by the pulsars, and on interactions of a compact object with the massive star wind. Predicted $\gamma$-ray light curves and spectra in the GeV and TeV energy ranges from such binary systems within our Galaxy and Magellanic Clouds should be observed by future AGILE and GLAST satellites and low threshold Cherenkov telescopes such as MAGIC, HESS, VERITAS or CANGAROO III.

17 pages, 14 figures, MNRAS, accepted

References in corpus (26)

• Sources of Relativistic Jets in the Galaxy
• Discovery of a High-Energy Gamma-Ray-Emitting Persistent Microquasar
• Hadronic gamma-ray emission from windy microquasars
• Theory of high-energy emission from the pulsar/Be-star system PSR 1259$-$63 I: radiation mechanisms and interaction geometry
• Pair-production multiplicities in rotation-powered pulsars
• VHE Gamma Rays from PKS 2155-304
• External Compton emission from relativistic jets in Galactic black hole candidates and ultraluminous X-ray sources
• Inverse Compton Emission of TeV Gamma Rays from PSR B1259-63
• Gamma-ray emission from Wolf-Rayet binaries
• Very-high-energy gamma radiation associated with the unshocked wind of the Crab pulsar
• Orbital dynamics of Cygnus X-3
• Recurrent microblazar activity in Cygnus X-1?
• On The Jets Associated with Galactic Superluminal Sources
• Probing Pulsar Winds Using Inverse Compton Scattering
• Towards Resolving the Crab $\sigma -$Problem: A Linear Accelerator?
• A numerical model for the gamma-ray emission of the microquasar LS 5039
• Doppler Modulation of X-ray lines in Cygnus X-3
• A Search for TeV Gamma-ray Emission from the PSR B1259-63/SS2883 Binary System with the CANGAROO-II 10-m Telescope
• Variable gamma-ray emission from the Be/X-ray transient A0535+26?
• gamma-ray emission from microquasars: a numerical model for LSI+61 303
• On the particle acceleration near the light surface of radio pulsars
• Shock geometry and inverse Compton emission from the wind of a binary pulsar
• Centaurus X-3 - A Source of High Energy Gamma Rays
• Very high energy gamma-rays from Centaurus X-3: indications and implications
• X-Ray and Gamma-Ray Emission from the PSR 1259-63 / Be Star System
• The Multiwavelength Approach to Unidentified Gamma-Ray Sources

Cited by in corpus (31)

• Gamma-ray binaries and related systems
• Gamma-ray absorption in massive X-ray binaries
• Periastron Observations of TeV Gamma-Ray Emission from a Binary System with a 50-year Period
• A compact pulsar wind nebula model of the gamma-ray loud binary LS I +61 303
• Be discs in binary systems I. Coplanar orbits
• Propagation of very high energy gamma-rays inside massive binaries LS 5039 and LSI +61 303
• Pulsar wind zone processes in LS 5039
• TeV neutrinos from microquasars in compact massive binaries
• High-Energy emissions from the Pulsar/Be binary system PSR J2032+4127/MT91 213
• Gamma-ray and neutrino emission from misaligned microquasars
• Implication of the striped pulsar wind model for gamma-ray binaries
• Spectral signature of a free pulsar wind in the gamma-ray binaries LS 5039 and LSI +61$\degr$303
• Pulsar model of the high energy phenomenology of LS 5039
• Modeling the three-dimensional pair cascade in binaries. Application to LS 5039
• GeV-TeV gamma-ray light curves expected in the IC electron-positron pair cascade model for massive binaries: Application to LS 5039
• Gamma-rays from binary system with energetic pulsar and Be star with aspherical wind: PSR B1259-63/SS2883
• Inverse Compton e-p pair cascade model for the gamma-ray production in massive binary LSI +61^o 303
• Gamma-rays from the vicinity of accreting neutron stars inside compact high-mass X-ray binaries
• A model for the two component gamma-ray spectra observed from the gamma-ray binaries
• Non-thermal radiation from a pulsar wind interacting with an inhomogeneous stellar wind
• One-dimensional pair cascade emission in gamma-ray binaries
• High energy gamma-ray emission from compact galactic sources in the context of observations with the next generation Cherenkov Telescope Arrays
• Very high energy gamma-ray emission from X-ray transients during major outbursts
• On the possibility of sub-TeV Gamma-ray emission from Cyg X-3
• Properties of a hypothetical cold pulsar wind in LS~5039
• The major role of eccentricity in the evolution of colliding pulsar-stellar winds
• High energy radiation from luminous and magnetized stars
• Optical depths for gamma-rays in the radiation field of a star heated by external X-ray source in LMXBs: Application to Her X-1 and Sco X-1
• Gamma ray attenuation in X-ray binaries: An application to LSI +61 303
• Expected gamma-ray emission from x-ray binaries
• Pair Cascades in the Disk Environment of the Binary System PSR B1259-63/LS 2883