Prospects for Gamma-Ray Emission from Magnetar Regions in CTAO Observations
Recent multiwavelength 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 signa...
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad9b23 |
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| author | M. F. Sousa R. Costa Jr. Jaziel G. Coelho R. C. Dos Anjos |
| author_facet | M. F. Sousa R. Costa Jr. Jaziel G. Coelho R. C. Dos Anjos |
| author_sort | M. F. Sousa |
| collection | DOAJ |
| description | Recent multiwavelength 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 particular, 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 5 hr 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. |
| format | Article |
| id | doaj-art-81193621ebdc482abdec15abf695070e |
| institution | DOAJ |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-81193621ebdc482abdec15abf695070e2025-08-20T02:47:03ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-0197912310.3847/1538-4357/ad9b23Prospects for Gamma-Ray Emission from Magnetar Regions in CTAO ObservationsM. F. Sousa0https://orcid.org/0000-0002-5438-3460R. Costa Jr.1https://orcid.org/0000-0002-2893-7589Jaziel G. Coelho2https://orcid.org/0000-0001-9386-1042R. C. Dos Anjos3https://orcid.org/0000-0002-6463-2272Programa de Pós-Graduação em Física e Astronomia, Universidade Tecnológica Federal do Paraná (UTFPR) , Av. Sete de Setembro, 3165, 80230-901, Curitiba, PR, Brazil; Departamento de Engenharias e Exatas, Universidade Federal do Paraná (UFPR) , Pioneiro, 2153, 85950-000 Palotina, PR, BrazilPrograma de Pós-Graduação em Física e Astronomia, Universidade Tecnológica Federal do Paraná (UTFPR) , Av. Sete de Setembro, 3165, 80230-901, Curitiba, PR, BrazilPrograma de Pós-Graduação em Física e Astronomia, Universidade Tecnológica Federal do Paraná (UTFPR) , Av. Sete de Setembro, 3165, 80230-901, Curitiba, PR, Brazil; Núcleo de Astrofísica e Cosmologia (Cosmo-Ufes) & Departamento de Física, Universidade Federal do Espírito Santo , 29075–910, Vitória, ES, Brazil; Divisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais , Avenida dos Astronautas 1758, 12227–010, São José dos Campos, SP, BrazilPrograma de Pós-Graduação em Física e Astronomia, Universidade Tecnológica Federal do Paraná (UTFPR) , Av. Sete de Setembro, 3165, 80230-901, Curitiba, PR, Brazil; Departamento de Engenharias e Exatas, Universidade Federal do Paraná (UFPR) , Pioneiro, 2153, 85950-000 Palotina, PR, Brazil; Núcleo de Astrofísica e Cosmologia (Cosmo-Ufes) & Departamento de Física, Universidade Federal do Espírito Santo , 29075–910, Vitória, ES, Brazil; Programa de pós-graduação em Física & Departamento de Física, Universidade Estadual de Londrina (UEL) , Rodovia Celso Garcia Cid Km 380, 86057-970 Londrina, PR, Brazil; Programa de Pós-Graduação em Física Aplicada, Universidade Federal da Integração Latino-Americana , 85867-670, Foz do Iguaçu, PR, Brazil; Max-Planck-Institut für Kernphysik , Saupfercheckweg 1, D-69117 Heidelberg, GermanyRecent multiwavelength 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 particular, 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 5 hr 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.https://doi.org/10.3847/1538-4357/ad9b23Gamma-raysMagnetarsGamma-ray observatoriesCosmic rays |
| spellingShingle | M. F. Sousa R. Costa Jr. Jaziel G. Coelho R. C. Dos Anjos Prospects for Gamma-Ray Emission from Magnetar Regions in CTAO Observations The Astrophysical Journal Gamma-rays Magnetars Gamma-ray observatories Cosmic rays |
| title | Prospects for Gamma-Ray Emission from Magnetar Regions in CTAO Observations |
| title_full | Prospects for Gamma-Ray Emission from Magnetar Regions in CTAO Observations |
| title_fullStr | Prospects for Gamma-Ray Emission from Magnetar Regions in CTAO Observations |
| title_full_unstemmed | Prospects for Gamma-Ray Emission from Magnetar Regions in CTAO Observations |
| title_short | Prospects for Gamma-Ray Emission from Magnetar Regions in CTAO Observations |
| title_sort | prospects for gamma ray emission from magnetar regions in ctao observations |
| topic | Gamma-rays Magnetars Gamma-ray observatories Cosmic rays |
| url | https://doi.org/10.3847/1538-4357/ad9b23 |
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