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Studying the non-thermal lobes of IRAS 16547-4247 through a multi-wavelength approach
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In recent years, massive protostars have turned out to be a possible population of high-energy emitters. Among the best candidates is IRAS 16547-4247, a protostar that presents a powerful outflow with clear signatures of interaction with its environment. This source has been revealed to be a potential high-energy source because it displays non-thermal radio emission of synchrotron origin, which is evidence of relativistic particles. To improve our understanding of IRAS 16547-4247 as a high-energy source, we analyzed XMM-Newton archival data and found that IRAS 16547-4247 is a hard X-ray source. We discuss these results in the context of a refined one-zone model and previous radio observations. From our study we find that it may be difficult to explain the X-ray emission as non-thermal radiation coming from the interaction region, but it might be produced by thermal Bremsstrahlung (plus photo-electric absorption) by a fast shock at the jet end. In the high-energy range, the source might be detectable by the present generation of Cherenkov telescopes, and may eventually be detected by Fermi in the GeV range.
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MUNAR I ADROVER, Pere, BOSCH I RAMON, Valentí, PAREDES I POY, Josep maria, IWASAWA, Kazushi. Studying the non-thermal lobes of IRAS 16547-4247 through a multi-wavelength approach. _Astronomy and Astrophysics_. 2013. Vol. 559, núm. A13, pàgs. 1-6. [consulta: 24 de gener de 2026]. ISSN: 0004-6361. [Disponible a: https://hdl.handle.net/2445/48355]