High-energy gamma-ray emission from SNR G57.2+0.8 hosting SGR J1935+2154 (2021)
- Authors:
- Autor USP: CATALANI, FERNANDO - EEL
- Unidade: EEL
- DOI: 10.1088/1475-7516/2021/10/023
- Subjects: RAIOS CÓSMICOS; RAIOS GAMA; SUPERNOVAS
- Keywords: cosmic ray theory; gamma ray theory; cosmic ray experiments
- Agências de fomento:
- Language: Inglês
- Abstract: In recent years some efforts have been made to identify active sources capable of accelerating particles up to 1015 eV, known as PeVatrons. Measurements of TeV (1012 eV) gamma-rays from supernova remnants (SNRs) have shown that efficient particle acceleration can occur in SNR diffusive shocks. In this paper, we obtain the contribution to the high energy and very high-energy gamma-ray (VHE, E > 100 GeV) emission due to cosmic-ray acceleration from SNR G57.2+0.8 hosting the Soft Gamma Repeater (SGR) J1935+2154 with the use of the GALPROP code. To do so, we take into account the SNR + SGR association as a single source close to the Galactic center. We propose that the above setting can provide a more comprehensive scenario for the generation of GeV-TeV gamma-rays. We also discuss the contribution from the SNR G57.2+0.8 and SGR J1935+2154 region to the diffusive TeV energy gamma-ray emission from the Galactic center.
- Imprenta:
- Publisher: IOP Science
- Publisher place: Bristol-GB
- Date published: 2021
- Source:
- Título: Journal of cosmology and astroparticle physics
- ISSN: 1475-7516
- Volume/Número/Paginação/Ano: n.10, p.1-14, 2021
- Status:
- Artigo possui versão em acesso aberto em repositório (Green Open Access)
- Versão do Documento:
- Versão submetida (Pré-print)
- Acessar versão aberta:
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ABNT
ANJOS, Rita de Cássia dos et al. High-energy gamma-ray emission from SNR G57.2+0.8 hosting SGR J1935+2154. Journal of cosmology and astroparticle physics, n. 10, p. 1-14, 2021Tradução . . Disponível em: https://doi.org/10.1088/1475-7516/2021/10/023. Acesso em: 09 abr. 2026. -
APA
Anjos, R. de C. dos, Coelho, J. G., Pereira, J. P., & Catalani, F. (2021). High-energy gamma-ray emission from SNR G57.2+0.8 hosting SGR J1935+2154. Journal of cosmology and astroparticle physics, (10), 1-14. doi:10.1088/1475-7516/2021/10/023 -
NLM
Anjos R de C dos, Coelho JG, Pereira JP, Catalani F. High-energy gamma-ray emission from SNR G57.2+0.8 hosting SGR J1935+2154 [Internet]. Journal of cosmology and astroparticle physics. 2021 ;(10): 1-14.[citado 2026 abr. 09 ] Available from: https://doi.org/10.1088/1475-7516/2021/10/023 -
Vancouver
Anjos R de C dos, Coelho JG, Pereira JP, Catalani F. High-energy gamma-ray emission from SNR G57.2+0.8 hosting SGR J1935+2154 [Internet]. Journal of cosmology and astroparticle physics. 2021 ;(10): 1-14.[citado 2026 abr. 09 ] Available from: https://doi.org/10.1088/1475-7516/2021/10/023 - Galactic Center as an efficient source of cosmic rays
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