Thermal emission from the stellar-mass black hole binary XTE J1118+480 in the low/hard state
R. C. Reis, J. M. Miller, A. C. Fabian
TL;DR
This paper reports the detection of a thermal disk component in the low/hard state of the stellar-mass black hole binary XTE J1118+480, challenging previous assumptions about disk truncation.
Contribution
It provides the first strong evidence of a non-truncated accretion disk in XTE J1118+480 during the low/hard state.
Findings
Thermal component detected at >14 sigma confidence
Disk temperature approximately 0.21 keV
Disk not truncated far from black hole
Abstract
We report on the detection of a thermal-disk component from the stellar-mass black hole binary XTE J1118+480 in the canonical low/hard state. The presence of a thermal component with a temperature of approximately 0.21keV in the Chandra spectra of XTE J1118+480 is found at more than the 14 sigma confidence level. Based on this evidence we argue that the accretion disk in XTE J1118+480 is not truncated far from the central black hole in contrast with previous claims.
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