Variable oxygen emission from the accretion disk of Mrk 110
| Autor: | J. N. Reeves, Andrew Lobban, D. Porquet, Valentina Braito, Nicolas Grosso |
|---|---|
| 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) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Astrophysics::High Energy Astrophysical Phenomena
galaxies: active FOS: Physical sciences Flux radiation mechanisms: general Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Grating 01 natural sciences Spectral line accretion X-rays: individuals: Mrk 110 quasars: general 0103 physical sciences Continuum (set theory) 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Line (formation) High Energy Astrophysical Phenomena (astro-ph.HE) Physics 010308 nuclear & particles physics accretion disks Astronomy and Astrophysics Radius Astrophysics - Astrophysics of Galaxies 3. Good health Full width at half maximum Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Reflection (physics) Astrophysics - High Energy Astrophysical Phenomena [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
| Zdroj: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, 2021, 649, pp.L3. ⟨10.1051/0004-6361/202140953⟩ Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 649, pp.L3. ⟨10.1051/0004-6361/202140953⟩ |
| ISSN: | 0004-6361 |
| Popis: | Six XMM-Newton observations of the bright narrow line Seyfert 1, Mrk 110, from 2004-2020, are presented. The analysis of the grating spectra from the Reflection Grating Spectrometer (RGS) reveals a broad component of the He-like Oxygen (OVII) line, with a full width at half maximum (FWHM) of $15900\pm1800$ km s$^{-1}$ measured in the mean spectrum. The broad OVII line in all six observations can be modelled with a face-on accretion disk profile, where from these profiles the inner radius of the line emission is inferred to lie between about 20-100 gravitational radii from the black hole. The derived inclination angle, of about 10 degrees, is consistent with studies of the optical Broad Line Region in Mrk 110. The line also appears variable and for the first time, a significant correlation is measured between the OVII flux and the continuum flux from both the RGS and EPIC-pn data. Thus the line responds to the continuum, being brightest when the continuum flux is highest, similar to the reported behaviour of the optical HeII line. The density of the line emitting gas is estimated to be $n_{\rm e}\sim10^{14}$ cm$^{-3}$, consistent with an origin in the accretion disk. 8 pages (including appendix), 8 figures. Accepted for publication in A&A Letters |
| Databáze: | OpenAIRE |
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