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http://hdl.handle.net/2445/48355
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 Stars 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: http://dx.doi.org/10.1051/0004-6361/201321959 |
It is part of: | Astronomy and Astrophysics, 2013, vol. 559, num. A13, p. 1-6 |
URI: | http://hdl.handle.net/2445/48355 |
Related resource: | http://dx.doi.org/10.1051/0004-6361/201321959 |
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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