Constraining Models of the Pulsar Wind Nebula in SNR G0.9+0.1 via Simulation of its Detection Properties using the Cherenkov Telescope Array

Abstract

SNR G0.9+0.1 is a well known source in the direction of the Galactic Center composed by a Supernova Remnant (SNR) and a Pulsar Wind Nebula (PWN) in the core. We investigate the potential of the future Cherenkov Telescope Array (CTA), simulating observations of SNR G0.9+0.1. We studied the spatial and spectral properties of this source and estimated the systematic errors of these measurements. The source will be resolved if the VHE emission region is bigger than $\sim 0.65^{\prime }$. It will also be possible to distinguish between different spectral models and calculate the cut-off energy. The systematic errors are dominated by the IRF instrumental uncertainties, especially at low energies. We computed the evolution of a young PWN inside a SNR using a one-zone time-dependent leptonic model. We applied the model to the simulated CTA data and found that it will be possible to accurately measure the cut-off energy of the $\gamma$-ray spectrum. Fitting of the multiwavelength spectrum will allow us to constrain also the magnetization of the PWN. Conversely, a pure power law spectrum would rule out this model. Finally, we checked the impact of the spectral shape and the energy density of the Inter-Stellar Radiation Fields (ISRFs) on the estimate of the parameters of the PWN, finding that they are not significantly affected.

18 pages, 15 figures, 5 tables. Accepted for publication in Monthly Notices of the Royal Astronomical Society

References in corpus (11)

• The NumPy array: a structure for efficient numerical computation
• A Dynamical Model for the Evolution of a Pulsar Wind Nebula inside a Non-Radiative Supernova Remnant
• A radiation transfer model for the Milky-Way: I. Radiation fields and application to High Energy Astrophysics
• GammaLib and ctools: A software framework for the analysis of astronomical gamma-ray data
• Exploring a SNR/Molecular Cloud Association Within HESS J1745-303
• Monte Carlo studies for the optimisation of the Cherenkov Telescope Array layout
• On the X-ray feature associated with the Guitar Nebula
• Discovery of the energetic pulsar J1747-2809 in the supernova remnant G0.9+0.1
• Learning About the Magnetar Swift J1834.9-0846 from its Wind Nebula
• High resolution radio study of the Pulsar Wind Nebula within the Supernova Remnant G0.9+0.1
• Exploiting Morphological Data from Pulsar Wind Nebulae via a Spatio-Temporal Leptonic Transport Code

Cited by in corpus (6)

• ASTRI Mini-Array Core Science at the Observatorio del Teide
• Modeling the γ-ray Pulsar Wind Nebulae population in our Galaxy
• From young to old: the evolutionary path of Pulsar Wind Nebulae
• Galactic Observatory Science with the ASTRI Mini-Array at the Observatorio del Teide
• High Energy Emission from the Galactic Center
• New Hard X-Ray and Multiwavelength Study of the PeVatron Candidate PWN G0.9+0.1 in the Galactic Center Region