SN 1987A: Tracing the flux decline and spectral evolution through a comparison of SRG/eROSITA and XMM-Newton observations

The Early Data Release of eROSITA and Mikhail Pavlinsky ART-XC on the SRG mission

Open Access

Fig. 4

Evolution of the upper limit of the ionisation timescale τ_u,2 of the warm plasma component (left) and the VPSHOCK normalisations of SN 1987A obtained from the EPIC-pn monitoring (right). Black, red, and green symbols show the norm1, norm2, and norm3 components denoting the emission measures as defined in Table 4. The blue line marks the sum of the three components.

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