Professor Rob Fender: Publications

An artist's impression of a relativistic jet propagating away from a black hole at close to the speed of light. Such jets are formed by the inner regions of the accretion flow: matter flowing inwards towards the black hole, via processes which are not yet fully understood. The accretion flow emits primarily in X-rays, the relativistic jet in the radio band: by combing observations in each band we can try and understand how such jets form and how much energy they carry away from the black hole.

An X-ray 51�� of the Disc in GX339-4

Sissa Medialab Srl (2008) 015

Authors:

Robert Dunn, Rob Fender, Elmar Körding

LOFAR Transients and the Radio Sky Monitor

Sissa Medialab Srl (2008) 030

Predicting Radio Activity in X-ray Binaries with Optical/Infrared Monitoring

Sissa Medialab Srl (2008) 012

Authors:

David M Russell, Rob Fender

Simultaneous X-ray/Radio Observations of Cir X-1

Sissa Medialab Srl (2008) 037

Authors:

Paolo Soleri, Valeriu M Tudose, Rob Fender, M van der Klis

Coupled radio and X-ray emission and evidence for discrete ejecta in the jets of SS 433

Astrophysical Journal 682:2 (2008) 1141-1151

Authors:

JCA Miller-Jones, S Migliari, RP Fender, TWJ Thompson, M Van Der Klis, M Méndez

Abstract:

We present five epochs of simultaneous radio (VLA) and X-ray (Chandra) observations of SS 433 to study the relation between the radio and X-ray emission in the arcsecond-scale jets of the source. We detected X-ray emission from the extended jets in only one of the five epochs of observation, indicating that the X-ray reheating mechanism is transient. The reheating does not correlate with the total flux in the core or in the extended radio jets. However, the radio emission in the X-ray reheating regions is enhanced when X-ray emission is present. Deep images of the jets in linear polarization show that outside of the core, the magnetic field in the jets is aligned parallel to the local velocity vector, strengthening the case for the jets to be composed of discrete bullets rather than being continuous flux tubes. We also observed anomalous regions of polarized emission well away from the kinematic trace, confirming the large-scale anisotropy of the magnetic field in the ambient medium surrounding the jets. © 2008. The American Astronomical Society. All rights reserved.

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