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Evidence of an irradiated accretion disc in XTE J1818–245

  • J. A. Zurita Heras (a1), S. Chaty (a1), M. Cadolle Bel (a2) and L. Prat (a1)

Abstract

The X-ray transient source XTE J1818–245 went through an outburst in 2005 that was observed during a multi-wavelength campaign from radio to soft γ-rays. We performed new optical observations with the ESO/NTT telescope at La Silla. The broad-band spectral energy distribution revealed that the outer parts of the accretion disc had to be irradiated by its inner parts to explain the optical emission.

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References

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Cadolle Bel, M., Prat, L., Rodriguez, J., Ribó, M., Barragán, L., D'Avanzo, P., Hannikainen, D. C., Kuulkers, E., Campana, S., Moldón, J., Chaty, S., Zurita Heras, J., Goldwurm, A., & Goldoni, P. 2009, A&A, 501, 1
Gierliński, M., Done, C., & Page, K. 2008 MNRAS, 388, 753
Gierliński, M., Done, C., & Page, K. 2009 MNRAS, 392, 1106
Hynes, R. I., Haswell, C. A., Chaty, S., Shrader, C. R., & Cui, W. 2002 MNRAS, 331, 169
Levine, A. M., Swank, J. H., Lin, D., & Remillard, R. A. 2005, ATel, 578
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