15–19 Sept 2025
Cefalù (Palermo)
Europe/Rome timezone

An Observational Test of the ULX Nature of SS 433

Not scheduled
15m
Palazzo Municipale - Sala delle Capriate (Cefalù (Palermo))

Palazzo Municipale - Sala delle Capriate

Cefalù (Palermo)

Cefalù (Palermo)

Speaker

Herman Marshall (MIT Kavli Institute)

Description

The X-ray binary SS 433, a Galactic microquasar, has been hypothesized to be an ultraluminous X-ray source (ULX) like those observed in nearby galaxies. It is well known that the compact object emits oppositely directed semi-relativistic jets that carry a much larger kinetic power than observed radiatively in the X-ray band. Much of the radiative power may be obscured from our view, which would link SS 433 to ULXs. SS 433 has extended X-ray emission, like Sy 2s where the extended gas is photo-excited by the obscured nuclear X-ray emission. We carried out regular Chandra imaging of the arc-second scale extended emission over a period of several months for comparison to the continuum flux monitored with Swift. The extended emission appears to show structure that has not been previously observed.

Contribution Oral talk
Affiliation MIT Kavli Institute
E-mail hermanm@mit.edu

Author

Herman Marshall (MIT Kavli Institute)

Co-authors

Jose Lopez Miralles (Aurora Technology for ESA, ESAC/ESA, XMM-Newton SOC) Leonardo Drake (MIT Kavli Institute) Manel Perucho (University of Valencia) Matthew Middleton (University of Southampton) Simone Migliari (Aurora Technology for ESA, ESAC/ESA)

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