Abstract.
We investigate the observability of delayed X-ray flashes predicted in currently popular GRB models as a result of the interaction of a non-relativistic blast wave with a disk of pre-ejected materialfrom the GRB progenitor. We have recently calculated the quasi-thermal X-ray line features produced in such a scenario. In the Hypernova/Collapsar model, delayed (a few days-several months after the GRB) bursts \(\lesssim\) of line-dominated, thermal X-ray emission may be expected. The He-merger scenario predicts similar X-ray emission line bursts a few days after the GRB. Deep observations and monitoring of X-ray afterglows with Chandra and XMM-Newton will be able to detect such delayed X-ray flashes from GRB sources out to at least \(z \sim 1\).
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Böttcher, M., Fryer, C.L., Liang, E.P., Smith, I.A. On the Detectability of Delayed X-Ray Flashes from GRBs. In: Costa, E., Frontera, F., Hjorth, J. (eds) Gamma-Ray Bursts in the Afterglow Era. ESO ASTROPHYSICS SYMPOSIA. Springer, Berlin, Heidelberg. https://doi.org/10.1007/10853853_43
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DOI: https://doi.org/10.1007/10853853_43
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Publisher Name: Springer, Berlin, Heidelberg
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