ATCA lightcurve of IGR J18245–2452 in the two frequencies (5.5 GHz, panel a), and 9 GHz, panel b)) and the calculated spectral index α, panel c). We also reported in the upper panel the 0.5–10 keV lightcurve from the Swift/XRT observation ID. 00032785003 (in blue). These were the only X-ray data collected quasi-simultaneously with the ATCA observation.