Exploring the high-density reflection model for the soft excess in RBS 1124

Madathil-Pottayil A, Walton DJ, García J, Miller J, Gallo LC, Ricci C, Reynolds MT, Stern D, Dauser T, Jiang J, Alston W, Fabian AC, Hardcastle MJ, Kosec P, Nardini E, Reynolds CS (2024)

Publication Type: Journal article

Publication year: 2024

Journal

Monthly Notices of the Royal Astronomical Society Oxford University Press

Book Volume: 534

Pages Range: 608-620

Journal Issue: 1

DOI: 10.1093/mnras/stae2104

Abstract

'Bare' active galactic nuclei (AGN) are a subclass of Type 1 AGN that show little or no intrinsic absorption. They offer an unobscured view of the central regions of the AGN and therefore serve as ideal targets to study the relativistic reflection features originating from the innermost regions of the accretion disc. We present a detailed broad-band spectral analysis (0.3-70 keV) of one of the most luminous bare AGN in the local Universe, RBS 1124 () using a new, co-ordinated high signal-to-noise observation obtained by XMM-Newton and NuSTAR. The source exhibits a power-law continuum with 1.8 along with a soft excess below 2 keV, a weak neutral iron line and curvature at high energies (keV). The broad-band spectrum, including the soft excess and the high-energy continuum, is well fit by the relativistic reflection model when the accretion disc is allowed to have densities of log/cm). Our analysis therefore suggests that when high-density effects are considered, relativistic reflection remains a viable explanation for the soft excess.

Authors with CRIS profile

Thomas Dauser Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut

Involved external institutions

University of Hertfordshire GB United Kingdom (GB) National Aeronautics and Space Administration (NASA) US United States (USA) (US) University of Michigan US United States (USA) (US) Saint Mary's University CA Canada (CA) Diego Portales University / Universidad Diego Portales CL Chile (CL) California Institute of Technology (Caltech) US United States (USA) (US) University of Cambridge GB United Kingdom (GB) National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF) IT Italy (IT) University of Maryland US United States (USA) (US)

How to cite

APA:

Madathil-Pottayil, A., Walton, D.J., García, J., Miller, J., Gallo, L.C., Ricci, C.,... Reynolds, C.S. (2024). Exploring the high-density reflection model for the soft excess in RBS 1124. Monthly Notices of the Royal Astronomical Society, 534(1), 608-620. https://doi.org/10.1093/mnras/stae2104

MLA:

Madathil-Pottayil, A., et al. "Exploring the high-density reflection model for the soft excess in RBS 1124." Monthly Notices of the Royal Astronomical Society 534.1 (2024): 608-620.

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