The first simultaneous X-ray broadband view of Mrk 110 with XMM-Newton and NuSTAR
| Autor: | Andrew Lobban, J. N. Reeves, D. Porquet, Nicolas Grosso, Valentina Braito |
|---|---|
| Přispěvatelé: | Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Observatoire astronomique de Strasbourg (ObAS), Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Keele University [Keele] |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Active galactic nucleus
Astrophysics::High Energy Astrophysical Phenomena Continuum (design consultancy) galaxies: active FOS: Physical sciences radiation mechanisms: general Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Spectral line Corona (optical phenomenon) accretion X-rays: individuals: Mrk 110 quasars: general 0103 physical sciences Emission spectrum 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Line (formation) Physics High Energy Astrophysical Phenomena (astro-ph.HE) Supermassive black hole Accretion (meteorology) 010308 nuclear & particles physics accretion disks Astronomy and Astrophysics Astrophysics - Astrophysics of Galaxies Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Astrophysics - High Energy Astrophysical Phenomena [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
| Zdroj: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, 2021, 654, pp.A89. ⟨10.1051/0004-6361/202141577⟩ Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 654, pp.A89. ⟨10.1051/0004-6361/202141577⟩ |
| ISSN: | 0004-6361 |
| Popis: | (Abridged) Soft and hard X-ray excesses, compared to the continuum power-law shape between ~2-10 keV, are common features observed in the spectra of active galactic nuclei (AGN) and are associated with the accretion disc-corona system around the supermassive black hole. However, the dominant process at work is still highly debated and has been proposed to be either relativistic reflection or Comptonisation. We aim to characterise the main X-ray spectral physical components from the bright bare Broad Line Seyfert 1 AGN Mrk 110, and the physical process(es) at work in its disc-corona system viewed almost face-on. We perform the X-ray broad-band spectral analysis thanks to two simultaneous XMM-Newton and NuSTAR observations performed on November 16-17 2019 and April 5-6 2020, we also use for the spectral analysis above 3 keV the deep NuSTAR observation obtained in January 2017. The broad-band X-ray spectra of Mrk 110 are characterised by the presence of a prominent and absorption-free smooth soft X-ray excess, moderately broad OVII and FeKalpha emission lines and a lack of a strong Compton hump. The continuum above ~3keV is very similar at both epochs, while some variability (stronger when brighter) is present for the soft X-ray excess. A combination of soft and hard Comptonisation by a warm and hot corona, respectively, plus mildly relativistic disc reflection reproduce the broadband X-ray continuum very well. The inferred warm corona temperature, kT_warm~0.3 keV, is similar to the values found in other sub-Eddington AGN, whereas the hot corona temperature, kT_hot~21-31 keV (depending mainly on the assumed hot corona geometry), is found to be in the lower range of the values measured in AGN. Comment: 11 pages (including appendix), 8 figures. Accepted for publication in A&A |
| Databáze: | OpenAIRE |
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