Speaker
Description
Fast X-ray transients (FXTs) are singular bright bursts of X-rays. The Einstein Probe (EP) satellite, launched in 2024, is revolutionising the field thanks to its timely discoveries and precise localizations of the events. These newly discovered FXTs have a strong connection with gamma-ray bursts (GRBs), which comes from the emission of a relativistic jet pointing towards us.
It seems that FXTs provide the unique possibility of studying the large population of off-axis and/or low-luminosity GRBs. In my work I investigate if the prompt emission, the initial X-ray flare in this case, and the afterglow, the subsequent long-lasting and the fading multiwavelength emission caused by the interaction of the jet with the circumstellar material, can be modeled in a unified way. Specifically, I discuss the potential of applying this approach using the FXT EP240414a as a test case, exploring whether all its available observational data (from X-ray to radio) can be explained by a relativistic jet observed from an off-axis point of view.
| Talk category | NOVA Network 3 |
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