Мақола

Constraints on the Spacetime Metric around Seven “Bare” AGNs Using X-Ray Reflection Spectroscopy

Ashutosh TripathiCenter for Field Theory and Particle Physics and Department of Physics, Fudan University, 200438 Shanghai, People’s Republic of China; [email protected]Jinli YanCenter for Field Theory and Particle Physics and Department of Physics, Fudan University, 200438 Shanghai, People’s Republic of China; [email protected]Yuchan YangCenter for Field Theory and Particle Physics and Department of Physics, Fudan University, 200438 Shanghai, People’s Republic of China; [email protected]Yunfeng YanCenter for Field Theory and Particle Physics and Department of Physics, Fudan University, 200438 Shanghai, People’s Republic of China; [email protected]Marcus GarnhamCenter for Field Theory and Particle Physics and Department of Physics, Fudan University, 200438 Shanghai, People’s Republic of China; [email protected]Yu YaoCenter for Field Theory and Particle Physics and Department of Physics, Fudan University, 200438 Shanghai, People’s Republic of China; [email protected]Songcheng LiCenter for Field Theory and Particle Physics and Department of Physics, Fudan University, 200438 Shanghai, People’s Republic of China; [email protected]Ziyu DingCenter for Field Theory and Particle Physics and Department of Physics, Fudan University, 200438 Shanghai, People’s Republic of China; [email protected]Askar B. AbdikamalovCenter for Field Theory and Particle Physics and Department of Physics, Fudan University, 200438 Shanghai, People’s Republic of China; [email protected]Dimitry AyzenbergCenter for Field Theory and Particle Physics and Department of Physics, Fudan University, 200438 Shanghai, People’s Republic of China; [email protected]Cosimo BambiCenter for Field Theory and Particle Physics and Department of Physics, Fudan University, 200438 Shanghai, People’s Republic of China; [email protected]Thomas DauserRemeis Observatory & ECAP, Universität Erlangen-Nürnberg, D-96049 Bamberg, GermanyJavier A. GarcíaCahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125, USAJiachen JiangInstitute of Astronomy, University of Cambridge, Cambridge CB3 0HA, UKSourabh NampalliwarTheoretical Astrophysics, Eberhard-Karls Universität Tübingen, D-72076 Tübingen, Germany

2019en

ABI

Аннотация

Abstract We present the study of a sample of seven “bare” active galactic nuclei observed with Suzaku . We interpret the spectrum of these sources with a relativistic reflection component and we employ our model relxill _ nk to test the Kerr nature of their supermassive black holes. We constrain the Johannsen deformation parameters α 13 and α 22 , in which the Kerr metric is recovered when α 13 = α 22 = 0. All our measurements are consistent with the hypothesis that the spacetime geometry around these supermassive objects is described by the Kerr solution. For some sources, we obtain quite strong constraints on α 13 and α 22 when compared to those found in our previous studies. We discuss the systematic uncertainties in our tests and the implications of our results.

Идентификаторлар

DOI: 10.3847/1538-4357/ab0a00

Иқтибослар ва манбалар

27 та иқтибос0 та фойдаланилган манба

Кўрсаткичлар — AkademScholar · Тез орада