'Spider' Millisecond Pulsar Binaries as Potential TeV Emitters
| العنوان: | 'Spider' Millisecond Pulsar Binaries as Potential TeV Emitters |
|---|---|
| المؤلفون: | Alice K. Harding, Matthew G. Baring, Christian J. T. van der Merwe, Christo Venter, Zorawar Wadiasingh |
| المصدر: | Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021). |
| بيانات النشر: | Sissa Medialab, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics, Light curve, Synchrotron, Spectral line, Galaxy, law.invention, Particle acceleration, Positron, Astrophysics - Solar and Stellar Astrophysics, Pulsar, Millisecond pulsar, law, Physics::Accelerator Physics, Astrophysics - High Energy Astrophysical Phenomena, Solar and Stellar Astrophysics (astro-ph.SR) |
| الوصف: | Pulsar winds interacting with sources of external pressure are well-established as efficient and prolific TeV accelerators in our Galaxy. Yet, enabled by observations from Fermi-LAT, a growing class of non-accreting pulsars in binaries has emerged and these are likely to become apparent as TeV emitters in the CTA era. This class consists of the black widows and redbacks, binaries in which a millisecond pulsar interacts with its low-mass companion. In such systems, an intrabinary shock can form as a site of particle acceleration and associated nonthermal emission. We motivate why these sources are particularly interesting for understanding pulsar winds. We also describe our new multizone code which models the X-ray and gamma-ray synchrotron and inverse Compton spectral components for select spider binaries, including diffusion, convection, and radiative energy losses in an axially symmetric, steady-state approach. This new multizone code simultaneously yields energy-dependent light curves and orbital-phase-resolved spectra. It also better constrains the multiplicity of electron/positron pairs that have been accelerated up to TeV energies and are necessary to power orbitally-modulated synchrotron emission components between the X-rays and MeV/GeV bands potentially observed in some systems. This affords a more robust prediction of the expected high-energy and VHE gamma-ray flux. Nearby MSPs with hot or flaring companions may be promising targets for CTA, and it is possible that spider binaries could contribute to the observed AMS-02 energetic positron excess. Comment: Presented at the 37th International Cosmic Ray Conference (ICRC 2021) |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6dde8a3e24c0d6f48353af68cd8fae5fTest https://doi.org/10.22323/1.395.0686Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....6dde8a3e24c0d6f48353af68cd8fae5f |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |