Black Hole X-ray Binary Radio -- X-ray -- Optical Correlation
April 15th, 2024 by Candidate 1053572A 3D plot of XRO space displaying the time evolving emission data of MAXI J8120+070 (blue), GX339-4 (red) and MAXI J1348-630 (purple), following the colour scheme adopted throughout the report.
The specific luminosities are all in units of erg s-1 Hz-1. For each source, the data are shaded according to the MJD at which they are recorded, getting progressively darker over time. Thus, the lightest points occur the earliest, and the darkest occur the latest. In particular, for J1820 and GX339, by grouping data based on shading, one can identify the different phases of evolution outlined in Sections 3.1 and 3.2 respectively. The plots in Figs. 2(a) and 2(b) can be recognised as projections of the 3D XRO plot onto 2D planes.
N.B. Double click on a source in the legend to view its emission data in isolation.
Properties to note:
- The roughly parallel radio upper (deep orange) and radio lower (pale orange) tracks of GX339 (see Section 3.2).
- The similarities between the soft state hysteresis loops of J1820 and GX339 relative to their respective hard state correlations.
- The vertical displacement between the sources’ tracks can be explained by their varying accretion disk sizes, which affect lO through Eq. (10): lO=CLX0.5a.
