Wednesday Colloquium

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"Back to the future: highlights of the observing campaign of the large scale jets of XTE J1550-564"

Giulia Migliori (Université Paris Diderot)

The large-scale decelerating jets of the XTE J1550-564 represent an unique laboratory to investigate the physics of microquasars’ jets and their interaction with the interstellar medium In this talk, I will present the results of the multi-frequency campaign of observations which probed the inner structure of the western jet in 2001-2003. The complex, evolving morphology of the jet in X-rays, the detection of polarized radio emission and the chromatic decay of the broad-band emission give indications on how the particles are accelerated and energy is dissipated at large distances from the black hole. I will discuss our findings in relation to the radiative and dynamical models proposed for this system, and examine the similarities with other microquasars’ jets, such as H 1743-322. Finally, I will briefly illustrate how the incoming facilities will significantly improve our powers of observations of this class of transient objects.


Owen Gingerich (Harvard University)


Victoria Antoci (University of Aarhus)


Roberta Del Vecchio (Astronomical Observatory, Jagiellonian University)


M.Ali Alpar (Sabanci University, Istanbul)