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Katherine Blundell OBE

Professor of Astrophysics

Research theme

  • Astronomy and astrophysics
  • Plasma physics

Sub department

  • Astrophysics

Research groups

  • Global Jet Watch
  • Pulsars, transients and relativistic astrophysics
Katherine.Blundell@physics.ox.ac.uk
Telephone: 01865 (2)73308
Denys Wilkinson Building, room 707
www.GlobalJetWatch.net
orcid.org/0000-0001-8509-4939
  • About
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The Global Jet Watch

Radio image of the microquasar SS433
The micro quasar SS433
Link to the site

X-ray constraints on jet composition

ASTR SOC P 250 (2002) 345-357

Authors:

JP Leahy, N Gizani, D Tsakiris

Abstract:

We review several ways in which X-ray observations are helping to tie down the physical parameters in radio lobes and jets, resolving most of the notorious uncertainties which afflict estimates from synchrotron emission alone. Together, the new results imply that the energy density of jet plasma is dominated by particles which do not contribute to the observed radiation, such as relativistic protons or mildly relativistic electrons, These components have long been hypothesised but their implications have often been ignored. Their presence substantially increases estimates of the energy budget for jet activity, and implies that jets may be an important heat source for the intracluster gas.
More details

The mass of radio galaxies from low to high redshift

(2001)

Authors:

Matt J Jarvis, Steve Rawlings, Steve Eales, Katherine M Blundell, Chris J Willott
More details from the publisher

The properties of the X-ray holes in the intracluster medium of the Perseus cluster

ArXiv astro-ph/0111418 (2001)

Authors:

AC Fabian, A Celotti, KM Blundell, NE Kassim, RA Perley

Abstract:

High resolution X-ray and low frequency radio imaging now allow us to examine in detail the interaction and physical properties of the radio source 3C84 and the surrounding thermal gas. The radiative and dynamical properties of the inner X-ray holes, which coincide with the radio lobes, indicate that the ratio of the energy factor k and filling factor f is in the range 180
Details from ArXiV
More details from the publisher

The properties of the X-ray holes in the intracluster medium of the Perseus cluster

(2001)

Authors:

AC Fabian, A Celotti, KM Blundell, NE Kassim, RA Perley
More details from the publisher

Images of an equatorial outflow in SS433

Astrophys.J. 562 (2001) L79-L82

Authors:

Katherine Blundell, Amy Mioduszewski, Tom Muxlow, Philipp Podsiadlowski, Michael Rupen

Abstract:

We have imaged the X-ray binary SS433 with unprecedented Fourier-plane coverage at 6cm using simultaneously the VLBA, MERLIN, and the VLA, and also at 20cm with the VLBA. At both wavelengths we have securely detected smooth, low-surface brightness emission having the appearance of a `ruff' or collar attached perpendicularly to the well-studied knotty jets in this system, extending over at least a few hundred AU. We interpret this smooth emission as a wind-like outflow from the binary, and discuss its implications for the present evolutionary stage of this system.
More details from the publisher
Details from ORA
Details from ArXiV

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