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- W4386056114 abstract "NGC 2071 is a star-forming region that overlaps with three $gamma$-ray sources detected by the Fermi Space Telescope. We propose that strong flare activity in T Tauri stars could produce $gamma$-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 $gamma$-ray source is detectable at 3.2$sigma$ 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 $gamma$-ray emission, which is $sim 5 times 10^{37}$ erg. This agreement becomes a hard observational constraint supporting previous hypotheses about rare flares as the origin of unidentified $gamma$-ray sources in star-forming regions." @default.
- W4386056114 created "2023-08-23" @default.
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- W4386056114 date "2023-08-21" @default.
- W4386056114 modified "2023-10-15" @default.
- W4386056114 title "γ-ray detection from occasional flares in T Tauri stars of NGC 2071 – I. Observational connection" @default.
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- W4386056114 doi "https://doi.org/10.1093/mnras/stad2029" @default.
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