6533b821fe1ef96bd127aea9
RESEARCH PRODUCT
High-energy monitoring of NGC 4593 II. Broad-band spectral analysis: testing the two-corona model
G. MarcelJ. FerreiraM. ClavelS. CorbelJ. RodriguezR. BelmontM. CoriatG. HenriF. CangemiR. MiddeiS. BianchiP.-o. PetrucciF. UrsiniM. CappiB. De MarcoA. De RosaJ. MalzacA. MarinucciG. MattG. PontiA. TortosaB De MarcoA De Rosasubject
galaxie [X-rays]High energyPhotonAstrophysics::High Energy Astrophysical Phenomenablack hole physicsgalaxies: activeFOS: Physical sciencesContext (language use)AstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencesmagnetohydrodynamics (MHD)Spectral lineCorona (optical phenomenon)X-rays: binariesaccretionPrimary (astronomy)Seyfert [galaxies]0103 physical sciencesAstrophysics::Solar and Stellar AstrophysicsSpectral analysis010303 astronomy & astrophysicsAstrophysics::Galaxy AstrophysicsPhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)individuals: (NGC 4593) [X-rays][SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]010308 nuclear & particles physicsaccretion disks[SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]Astronomy and AstrophysicsAstronomy and AstrophysicGalaxygalaxies: SeyfertX-rays: galaxiesISM: jets and outflowsSpace and Planetary Science[SDU]Sciences of the Universe [physics]active [galaxies]Astrophysics - High Energy Astrophysical Phenomena[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]X-rays: individuals: (NGC 4593)description
It is widely believed that the primary X-ray emission of AGN is due to the Comptonisation of optical-UV photons from a hot electron corona, while the origin of the 'soft-excess' is still uncertain and matter of debate. A second Comptonisation component, called warm corona, was therefore proposed to account for the soft-excess, and found in agreement with the optical-UV to X-ray emission of a sample of Seyfert galaxies. In this context, we exploit the broadband XMM-Newton and NuSTAR simultaneous observations of the Seyfert galaxy NGC 4593 to further test the so called "two corona model". The NGC 4593 spectra are well reproduced by the model, from the optical/UV to the hard X-rays. Moreover, the data reveal a significant correlation between the hot and the warm corona parameters during our monitoring campaign.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-03-11 |