A NuSTAR and Swift view of the hard state of MAXI J1813-095

Jiang J, Buisson DJK, Dauser T, Fabian AC, Furst F, Gallo LC, Harrison FA, Parker ML, Steiner JF, Tomsick JA, Ubach S, Walton DJ (2022)


Publication Type: Journal article

Publication year: 2022

Journal

Book Volume: 514

Pages Range: 1952-1960

Journal Issue: 2

DOI: 10.1093/mnras/stac1401

Abstract

We present an analysis of the NuSTAR and Swift spectra of the black hole candidate MAXI J1813-095 in a failed-transition outburst in 2018. The NuSTAR observations show evidence of reflected emission from the inner region of the accretion disc. By modelling the reflection component in the spectra, we find a disc inner radius of Rin < 7 rg. This result suggests that either a slightly truncated disc or a non-truncated disc forms at a few per cent of the Eddington limit in MAXI J1813-095. Our best-fitting reflection models indicate that the geometry of the innermost accretion remains consistent during the period of NuSTAR observations. The spectral variability of MAXI J1813-095 from multi-epoch observations is dominated by the variable photon index of the Comptonization emission.

Authors with CRIS profile

Involved external institutions

How to cite

APA:

Jiang, J., Buisson, D.J.K., Dauser, T., Fabian, A.C., Furst, F., Gallo, L.C.,... Walton, D.J. (2022). A NuSTAR and Swift view of the hard state of MAXI J1813-095. Monthly Notices of the Royal Astronomical Society, 514(2), 1952-1960. https://doi.org/10.1093/mnras/stac1401

MLA:

Jiang, Jiachen, et al. "A NuSTAR and Swift view of the hard state of MAXI J1813-095." Monthly Notices of the Royal Astronomical Society 514.2 (2022): 1952-1960.

BibTeX: Download