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Título:
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Evidence of non-thermal x-ray emission from HH 80
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Autores:
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López Santiago, Javier ;
Peri, C. S. ;
Bonito, R. ;
Miceli, M. ;
Albacete Colombo, J. F. ;
Benaglia, P. ;
Castro Rubio, Elisa de
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Tipo de documento:
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texto impreso
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Editorial:
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IOP Publishing, 2013-10-20
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Astrofísica
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Materia = Ciencias: Física: Astronomía
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Tipo = Artículo
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Resumen:
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Protostellar jets appear at all stages of star formation when the accretion process is still at work. Jets travel at velocities of hundreds of km s^-1, creating strong shocks when interacting with the interstellar medium. Several cases of jets have been detected in X-rays, typically showing soft emission. For the first time, we report evidence of hard X-ray emission possibly related to non-thermal processes not explained by previous models of the post-shock emission predicted in the jet/ambient interaction scenario. HH 80 is located at the south head of the jet associated with the massive protostar IRAS 18162-2048. It shows soft and hard X-ray emission in regions that are spatially separated, with the soft X-ray emission region situated behind the region of hard X-ray emission. We propose a scenario for HH 80 where soft X-ray emission is associated with thermal processes from the interaction of the jet with denser ambient matter and hard X-ray emission is produced by synchrotron radiation at the front shock.
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En línea:
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https://eprints.ucm.es/id/eprint/30999/1/castrorubio24libre.pdf
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