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Título: | γ -ray detection from occasional flares in T Tauri stars of NGC 2071 – I. Observational connection |
Autor(es): | Filócomo, Agostina Albacete Colombo, Juan Facundo Mestre, Enrique Pellizza, Leonardo Combi, Jorge Ariel |
Fecha de publicación: | 25-may-2023 |
Editorial: | Oxford University Press on behalf of Royal Astronomical Society |
Citación: | A Filócomo, J F Albacete-Colombo, E Mestre, L J Pellizza, J A Combi, γ-ray detection from occasional flares in T Tauri stars of NGC 2071 – I. Observational connection, Monthly Notices of the Royal Astronomical Society, Volume 525, Issue 2, October 2023, Pages 1726–1730, https://doi.org/10.1093/mnras/stad2029 |
Revista: | Monthly Notice of the Royal Astronomical Society (MNRAS) |
Abstract: | NGC 2071 is a star-forming region that overlaps with three γ -ray sources detected by the Fermi Space Telescope. We propose that strong flare activity in T Tauri stars could produce γ -ray emission in a way that makes them a counterpart to some unidentified sources detected by the Large Area Telescope aboard the Fermi satellite. We have performed a spectral and temporal analysis for two Fermi data sets: the first 2 yr and the entire 14 yr of observations. We have found that the γ -ray source is detectable at 3.2σ above the background at energies above 100 GeV during the first 2 yr of observation. The analysis of the expected frequency of the highest energy flares occurring in T Tauri stars is consistent with our estimate. In addition, we have determined the minimum energy of the flare that would produce γ -ray emission, which is ∼5 × 1037 erg. This agreement becomes a hard observational constraint supporting previous hypotheses about rare flares as the origin of unidentified γ -ray sources in star-forming regions. |
Resumen: | . |
URI: | http://rid.unrn.edu.ar/handle/20.500.12049/11624 |
Identificador DOI: | https://doi.org/10.1093/mnras/stad2029 |
ISSN: | 0035-8711 |
Aparece en las colecciones: | Artículos |
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Archivo | Descripción | Tamaño | Formato | |
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2023MNRAS.525.p1726F.pdf | Paper cientifico | 537,73 kB | Adobe PDF | Visualizar/Abrir |
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