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Black Hole

Lensing of space time around a black hole. At Oxford we study black holes observationally and theoretically on all size and time scales - it is some of our core work.

Credit: ALAIN RIAZUELO, IAP/UPMC/CNRS. CLICK HERE TO VIEW MORE IMAGES.

Prof Patrick Roche

Professor of Physics

Research theme

  • Astronomy and astrophysics

Sub department

  • Astrophysics

Research groups

  • Astronomical instrumentation
Pat.Roche@physics.ox.ac.uk
Telephone: 01865 (2)83133
Denys Wilkinson Building, room 765
  • About
  • Research
  • Teaching
  • Publications

THE EVOLUTION OF THE 8-13 MU-M SPECTRUM OF SUPERNOVA 1987A

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 261:3 (1993) 522-534

Authors:

PF ROCHE, DK AITKEN, CH SMITH
More details from the publisher

THE NATURE OF THE MILLIMETER EMISSION IN NGC 4102, NGC 4418, NGC 6000 AND MRK 231

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 265:2 (1993) 486-492

Authors:

PF ROCHE, CJ CHANDLER
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MILLIMETER AND SUBMILLIMETER CONTINUUM OBSERVATIONS OF PLANETARY-NEBULAE

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 258:2 (1992) 257-269

Authors:

MG HOARE, PF ROCHE, RES CLEGG
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SILICON MONOXIDE IN SUPERNOVA SN1987-A

IAU SYMPOSIA (1992) 371-372

Authors:

CH SMITH, DK AITKEN, PF ROCHE
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Multifrequency observations of BL Lacertae in 1988

Astrophysical Journal 382:2 (1991) 508-514

Authors:

N Kawai, M Matsuoka, JN Bregman, HD Aller, MF Aller, PA Hughes, SA Balbus, TJ Balonek, KC Chambers, RES Clegg, SD Clements, RJ Leacock, AG Smith, JS Miller, M Hereld, MG Hoare, VA Hughes, GK Miley, GH Moriarty-Schieven, K Matthews, G Neugebauer, T Ohashi, PF Roche, HA Thronson, E Valtaoja, H Terasranta, JR Webb, R Goodrich, BJ Wills, D Wills

Abstract:

Simultaneous multiwavelength observations of BL Lacertae were performed on two occasions separated by 1 month in 1988 June and July, covering the radio, submillimeter, infrared, optical, ultraviolet, and X-ray wave bands. In the wide-band photon spectra, the X-ray flux lies clearly above the extension of radio-ultraviolet continuum as expected. The slope of the X-ray spectra is significantly flatter than that at optical-ultraviolet regimes, and its spectral index 0.7-1.0 corresponds to the slope at submillimeter band. Comparison with earlier observations, in fact, indicates that the X-ray flux is correlated with the submillimeter band, an not with the others, and supports the SSC model.
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