EVIDENCE OF NON-THERMAL X-RAY EMISSION FROM HH 80

Autor: Paula Benaglia, Marco Miceli, C. S. Peri, J. F. Albacete-Colombo, Javier López-Santiago, Rosaria Bonito, E. de Castro
Přispěvatelé: López-Santiago, J, Peri, CS, Bonito, R, Miceli, M, Albacete-Colombo, JF, Benaglia, P, de Castro, E
Rok vydání: 2013
Předmět:
Astrofísica
Ciencias Astronómicas
Ciencias Físicas
Astrophysics::High Energy Astrophysical Phenomena
FOS: Physical sciences
Synchrotron radiation
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Individual: Iras 18162-2048 [Stars]
purl.org/becyt/ford/1 [https]
Herbig-Haro objects
ISM: jets and outflows
radiation mechanisms: non-thermal
stars: individual: IRAS 18162-2048
stars: pre-main sequence
X-rays: general
High Energy Physics - Phenomenology (hep-ph)
Herbig-Haro objects
General [X-Rays]
jets and outflows
radiation mechanisms: non-thermal
stars: individual: IRAS 18162-2048
stars: pre-main sequence
X-rays: general [Herbig-Haro objects
ISM]
Jets And Outflows
[Ism]
Thermal
Protostar
stars: individual
Astrophysics::Galaxy Astrophysics
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics
Star formation
X-ray
Astronomy and Astrophysics
purl.org/becyt/ford/1.3 [https]
radiation mechanisms: non-thermal
Herbig-Haro Objects
Astrophysics - Astrophysics of Galaxies
Accretion (astrophysics)
Non-Thermal [Radiation Mechanisms]
Astronomía
Interstellar medium
High Energy Physics - Phenomenology
ISM: jets and outflows
Space and Planetary Science
Astrophysics of Galaxies (astro-ph.GA)
Astrophysics - High Energy Astrophysical Phenomena
CIENCIAS NATURALES Y EXACTAS
Zdroj: E-Prints Complutense. Archivo Institucional de la UCM
instname
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
ISSN: 2041-8213
2041-8205
DOI: 10.1088/2041-8205/776/2/l22
Popis: 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.
Instituto Argentino de Radioastronomía
Facultad de Ciencias Astronómicas y Geofísicas
Databáze: OpenAIRE
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