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Title: Studying the non-thermal lobes of IRAS 16547-4247 through a multi-wavelength approach
Author: Munar i Adrover, Pere
Bosch i Ramon, Valentí
Paredes i Poy, Josep Maria
Iwasawa, Kazushi
Keywords: Estels
Astronomia de raigs gamma
Astronomia de raigs X
Jets (Astrofísica)
Matèria interstel·lar
Gamma ray astronomy
X-ray astronomy
Astrophysical jets
Interstellar matter
Issue Date: Nov-2013
Publisher: Springer Verlag
Abstract: 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.
Note: Versió postprint del document publicat a:
It is part of: Astronomy and Astrophysics, 2013, vol. 559, num. A13, p. 1-6
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ISSN: 0004-6361
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Publicacions de projectes de recerca finançats per la UE

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