Evidence of non-thermal x-ray emission from HH 80

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 emi...

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Autores principales: López Santiago, J., Peri, Cintia Soledad, Bonito, R., Miceli, M., Albacete Colombo, Juan Facundo, Benaglia, Paula, De Castro, E.
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Astronómicas
Herbig-Haro objects
ISM: jets and outflows
radiation mechanisms: non-thermal
stars: individual
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85485
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85485
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Herbig-Haro objects
ISM: jets and outflows
radiation mechanisms: non-thermal
stars: individual
spellingShingle Ciencias Astronómicas
Herbig-Haro objects
ISM: jets and outflows
radiation mechanisms: non-thermal
stars: individual
López Santiago, J.
Peri, Cintia Soledad
Bonito, R.
Miceli, M.
Albacete Colombo, Juan Facundo
Benaglia, Paula
De Castro, E.
Evidence of non-thermal x-ray emission from HH 80
topic_facet Ciencias Astronómicas
Herbig-Haro objects
ISM: jets and outflows
radiation mechanisms: non-thermal
stars: individual
description 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.
format Articulo
Preprint
author López Santiago, J.
Peri, Cintia Soledad
Bonito, R.
Miceli, M.
Albacete Colombo, Juan Facundo
Benaglia, Paula
De Castro, E.
author_facet López Santiago, J.
Peri, Cintia Soledad
Bonito, R.
Miceli, M.
Albacete Colombo, Juan Facundo
Benaglia, Paula
De Castro, E.
author_sort López Santiago, J.
title Evidence of non-thermal x-ray emission from HH 80
title_short Evidence of non-thermal x-ray emission from HH 80
title_full Evidence of non-thermal x-ray emission from HH 80
title_fullStr Evidence of non-thermal x-ray emission from HH 80
title_full_unstemmed Evidence of non-thermal x-ray emission from HH 80
title_sort evidence of non-thermal x-ray emission from hh 80
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/85485
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bdutipo_str Repositorios
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