Extended Data Fig. 3: AT 2022cmc’s X-ray luminosity and energy spectral slope evolution.
From: The Birth of a Relativistic Jet Following the Disruption of a Star by a Cosmological Black Hole
(a) Logarithm of the observed 0.3-5 keV (filled blue circles; left y-axis) and the absorption- corrected 0.3-10 keV luminosities (filled red crosses; right y-axis) in units of ergs s1. The error bars on the luminosities are much smaller than the size of the data points. (b) Evolution of the best-fit power-law index with time. The abrupt changes in index around day 7 (rest-frame) coincide with a hard X-ray (2-5 keV) flare that happened during epoch E21 (the data point with best-fit photon index of ~ 1.3; see Table 1). The neutral Hydrogen column of the host was tied across all epochs and the best-fit value is (9.7 ± 0.3) × 1021 cm2. All the error bars represent 1σ uncertainties. The individual NICER spectra are provided as supplementary data.
