Particle acceleration in the expanding blast wave of Eta Carina's Great Eruption of 1843 - Astrophysics > High Energy Astrophysical PhenomenaReportar como inadecuado




Particle acceleration in the expanding blast wave of Eta Carina's Great Eruption of 1843 - Astrophysics > High Energy Astrophysical Phenomena - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: Non-thermal hard X-ray and high-energy HE; 1 MeV < E < 100 GeV gamma-rayemission in the direction of Eta Carina has been recently detected using theINTEGRAL, AGILE and Fermi satellites. So far this emission has been interpretedin the framework of particle acceleration in the colliding wind region betweenthe two massive stars. However, the existence of a very fast moving blast wavewhich originates in the historical 1843 -Great Eruption- provides analternative particle acceleration site in this system. Here we explore analternate scenario and find that inverse Compton emission from electronsaccelerated in the blast wave can naturally explain both the flux and spectralshape of the measured hard X-ray and HE gamma-ray emission. This scenario isfurther supported by the lack of significant variability in the INTEGRAL andFermi measured fluxes.



Autor: S. Ohm, J.A. Hinton, W. Domainko

Fuente: https://arxiv.org/







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