6533b86cfe1ef96bd12c8bd6
RESEARCH PRODUCT
EVIDENCE OF NON-THERMAL X-RAY EMISSION FROM HH 80
Paula BenagliaPaula BenagliaMarco MiceliC. S. PeriC. S. PeriJ. F. Albacete-colomboJavier López-santiagoRosaria BonitoRosaria BonitoE. De Castrosubject
AstrofísicaCiencias AstronómicasCiencias FísicasAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesSynchrotron radiationAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsIndividual: 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: generalHigh Energy Physics - Phenomenology (hep-ph)Herbig-Haro objectsGeneral [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]ThermalProtostarstars: individualAstrophysics::Galaxy AstrophysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)PhysicsStar formationX-rayAstronomy and Astrophysics//purl.org/becyt/ford/1.3 [https]radiation mechanisms: non-thermalHerbig-Haro ObjectsAstrophysics - Astrophysics of GalaxiesAccretion (astrophysics)Non-Thermal [Radiation Mechanisms]AstronomíaInterstellar mediumHigh Energy Physics - PhenomenologyISM: jets and outflowsSpace and Planetary ScienceAstrophysics of Galaxies (astro-ph.GA)Astrophysics - High Energy Astrophysical PhenomenaCIENCIAS NATURALES Y EXACTASdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-10-01 | The Astrophysical Journal |