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arXiv · 2412.02860

Prospects for gamma-ray emission from magnetar regions in CTAO observations

M. F. Sousa·R. Jr. Costa·Jaziel G. Coelho·R. C. Dos Anjos
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Abstract

Recent multi-wavelength observations have highlighted magnetars as significant sources of cosmic rays, particularly through their gamma-ray emissions. This study examines three magnetar regions - CXOU J171405.7-31031, Swift J1834-0846, and SGR 1806-20 - known for emitting detectable electromagnetic signals. We assess the detectability of these regions using the upcoming Cherenkov Telescope Array Observatory (CTAO) by conducting an ON/OFF spectral analysis and compare the expected results with existing observations. Our findings indicate that CTAO will detect gamma-ray emissions from these three magnetar regions with significantly reduced emission flux errors compared to current instruments. In special, the study shows that the CXOUJ1714-3810 and SwiftJ1834-0846 magnetar regions can be observed by the full southern and northern CTAO arrays in just five hours of observation, with mean significances above $10 \,σ$ and $30 \,σ$, respectively. This paper discusses the regions analyzed, presents key results, and concludes with insights drawn from the study.

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M. F. Sousa, R. Jr. Costa, Jaziel G. Coelho, R. C. Dos Anjos. 2024-12-03. Prospects for gamma-ray emission from magnetar regions in CTAO observations. https://doi.org/10.3847/1538-4357%2Fad9b23

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