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On the Nature of Einstein Probe Transient EP250916a: Insights from X-Ray, Optical, and Radio Observations

  • Authors: Gaurava K. Jaisawal, Giulia Illiano, Francesco Carotenuto, Astrid L. Bouquin, David M. Russell, Giorgos Leloudas, Andrea Sanna, Dalya Akl, Rob Fender, Sara Motta

Gaurava K. Jaisawal et al 2026 The Astrophysical Journal 1005 .

  • Provider: AAS Journals

Caption: Figure 4.

Spectral evolution of EP250916a  during the outburst from Swift/XRT observations, fitted with an absorbed power-law model. Top to bottom panels show the absorption column density NH (1022 cm−2), photon index Γ, normalization (ΓNorm), and the 0.5–10 keV unabsorbed flux (erg s−1 cm−2), respectively.

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