Multi-wavelength observations of PSRJ 2032+4127 during the 2017 periastron passage
arXiv:2004.11884 · doi:10.1093/mnras/staa1181
Abstract
PSRJ 2032+4127 is only the second known gamma-ray binary where it is confirmed that a young radio pulsar is in orbit around a Be-star. The interaction of the pulsar wind with the mass outflow from the companion leads to broad band emission from radio up to TeV energies. In the current paper we present results of optical monitoring of the 2017 periastron passage with the Nordic Optical Telescope. These observations are complemented by X-ray (Swift/XRT, NuSTAR) and GeV (Fermi/LAT) monitoring. Joint analysis of the evolution of the parameters of the Halpha line and the broadband (X-ray to TeV) spectral shape allows us to propose a model linking the observed emission to the interaction of the pulsar and Be-star winds under the assumption of the inclined disc geometry. Our model allows the observed flux and spectral evolution of the system to be explained in a self-consistent way.
accepted to MNRAS
References in corpus (10)
- Detection of 16 Gamma-Ray Pulsars Through Blind Frequency Searches Using the Fermi LAT
- On the formation of TeV radiation in LS 5039
- Multiwavelength monitoring and X-ray brightening of Be X-ray binary PSR J2032+4127/MT91 213 on its approach to periastron
- High-Energy emissions from the Pulsar/Be binary system PSR J2032+4127/MT91 213
- On the relationship between circumstellar disc size and X-ray outbursts in Be/X-ray binaries
- Overview of non-transient gamma-ray binaries and prospects for the Cherenkov Telescope Array
- Modelling decretion discs in Be/X-ray binaries
- X-ray mapping of the stellar wind in the binary PSR J2032+4127/MT91 213
- The semicentennial binary system PSR J2032+4127 at periastron: X-ray photometry, optical spectroscopy and SPH modelling
- Gamma-rays from the binary system containing PSR J2032+4127 during its periastron passage