GeV emission of gamma-ray binary with pulsar scenario
arXiv:2004.04337 · doi:10.1093/mnras/staa985
Abstract
We study GeV emission from gamma-ray binaries by assuming that the compact object is a young pulsar. We assume that the relativistic unshocked pulsar wind with Lorentz factor of 10^4~5 can produce the GeV emission by the inverse-Compton scattering process in the dense soft-photon field of the companion star. The travel distance of the unshocked pulsar wind that moves toward the observer depends on the orbital phase of the pulsar. We discuss that the orbital modulation of the GeV emission is a result of combination of the effects of the travel distance of the unshocked pulsar wind and of the anisotropic soft-photon field of the companion star. In this paper, we study how the effect of the travel distance of the unshocked pulsar wind affects to the orbital modulation of GeV emission. We apply our scenario to two gamma-ray binaries, LMC P3 and 4FGL J1405.5-6119. We find that with the suggested system parameters of LMC P3, the observed amplitude of the orbital modulation and the peak width are more consistent with the model light curve by taking into account the effect of the travel distance. For LMC P3, we analyze the GeV spectrum with 8-years Fermi-LAT data and discuss the broadband emission process in X-ray to TeV energy bands. We predict a possible system geometry for 4FGL J1405.5-6119 by fitting the GeV light curve. Key words: shock waves, gamma-rays: stars, stars: massive stars: mass-loss, stars: neutron
arXiv comment13 pages, 18 figures, 2 tables, accepted for publication in MNRAS
References in corpus (50)
- Variable Very High Energy Gamma-ray Emission from the Microquasar LS I +61 303
- Discovery of the Binary Pulsar PSR B1259-63 in Very-High-Energy Gamma Rays around Periastron with H.E.S.S
- Gamma-ray binaries and related systems
- A new Cepheid distance to the maser-host galaxy NGC 4258 and its implications for the Hubble Constant
- 3.9 day orbital modulation in the TeV gamma-ray flux and spectrum from the X-ray binary LS 5039
- Theory of high-energy emission from the pulsar/Be-star system PSR 125963 I: radiation mechanisms and interaction geometry
- Clustering of Local Group distances: publication bias or correlated measurements? I. The Large Magellanic Cloud
- Discovery of High-Energy Gamma-Ray Emission from the Binary System PSR B1259-63/LS 2883 Around Periastron with Fermi
- Pair-production multiplicities in rotation-powered pulsars
- On the polar cap cascade pair multiplicity of young pulsars
- Pair Multiplicities and Pulsar Death
- Modeling interaction of relativistic and nonrelativistic winds in binary system PSR 1259-63/SS2883. I.Hydrodynamical limit
- Fermi LAT Observations of LS 5039
- On the formation of TeV radiation in LS 5039
- HESS J0632+057 : A new gamma-ray binary?
- Study of the Spectral and Temporal Characteristics of X-Ray Emission of the Gamma-Ray Binary LS 5039 with Suzaku
- On the maximum pair multiplicity of pulsar cascades
- Discovery of GeV gamma-ray emission from PSR B1259-63/LS 2883
- Simulations of stellar/pulsar wind interaction along one full orbit
- Relativistic Doppler-boosted emission in gamma-ray binaries
- Deep view of the Large Magellanic Cloud with 6 years of Fermi-LAT observations
- Multiwavelength monitoring and X-ray brightening of Be X-ray binary PSR J2032+4127/MT91 213 on its approach to periastron
- Periastron Observations of TeV Gamma-Ray Emission from a Binary System with a 50-year Period
- Multi-wavelength Observations of the Binary System PSR B1259-63/LS~2883 around the 2014 Periastron Passage
- A Luminous Gamma-ray Binary in the Large Magellanic Cloud
- Probing Pulsar Winds Using Inverse Compton Scattering
- Unraveling the high-energy emission components of gamma-ray binaries
- Magnetic fields in massive stars, their winds, and their nebulae
- High-Energy emissions from the Pulsar/Be binary system PSR J2032+4127/MT91 213
- Discovery of VHE emission towards the Carina arm region with the H.E.S.S. telescope array: HESS J1018-589
- Pulsar model of the high energy phenomenology of LS 5039
- Periodic morphological changes in the radio structure of the gamma-ray binary LS 5039
- DEM L241, a Supernova Remnant containing a High-Mass X-ray Binary
- Light curve and SED modeling of the gamma-ray binary 1FGL J1018.65856: constraints on the orbital geometry and relativistic flow
- Gamma-rays from binary system with energetic pulsar and Be star with aspherical wind: PSR B1259-63/SS2883
- High-energy emissions from the gamma-ray binary LS 5039
- Modelling the interaction between relativistic and non-relativistic winds in binary pulsar systems: strong magnetization of the pulsar wind
- Probing the Pulsar Wind in the gamma-ray Binary System PSR B1259-63/SS 2883
- GeV detection of HESS J0632+057
- Modelling the multi-wavelength emissions from PSR B1259-63/LS 2883: the effects of the stellar disc on shock radiations
- Orbital solution leading to an acceptable interpretation for the enigmatic gamma-ray binary HESS J0632+057
- Investigation of the energy dependence of the orbital light curve in LS 5039
- The hour-timescale GeV flares of PSR B1259-63 in 2017
- The orbital parameters of the gamma-ray binary LMC P3
- Detection of variable VHE gamma-ray emission from the extra-galactic gamma-ray binary LMC P3
- Multiwavelength Observations of The TeV Binary LS I +61 303 with VERITAS, Fermi-LAT and Swift-XRT During a TeV Outburst
- Evidence of a spectral break in the gamma-ray emission of the disk component of Large Magellanic Cloud: a hadronic origin?
- A multi-wavelength study of the gamma-ray binary candidate HESS J1832-093
- Inverse Compton Scattering Model for X-ray Emission of the Gamma-ray Binary LS 5039
- Discovery of GeV gamma-ray emission from the LMC B0443-6657 with the Fermi Large Area Telescope