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Disentangling X-Ray Reprocessing Sites in EXO 0748-676

Published online by Cambridge University Press:  22 February 2018

R. I. Hynes ,
C. A. Haswell ,
E. L. Robinson ,
K. Horne ,
K. O'Brien ,
P. A. Charles ,
A. R. King  and
D. J. Rolfe
R. I. Hynes
Affiliation:
Astronomy Department and McDonald Observatory, The University of Texas at Austin, USA Hubble Fellow; rih@Dastro.as.utexas.edu
C. A. Haswell
Affiliation:
Department of Physics and Astronomy, The Open University, UK
E. L. Robinson
Affiliation:
Astronomy Department and McDonald Observatory, The University of Texas at Austin, USA
K. Horne
Affiliation:
School of Physics and Astronomy, The University of St Andrews, UK
K. O'Brien
Affiliation:
European Southern Observatory
P. A. Charles
Affiliation:
School of Physics and Astronomy, The University of Southampton, UK
A. R. King
Affiliation:
Department of Physics and Astronomy, The University of Leicester, UK
D. J. Rolfe
Affiliation:
Department of Physics and Astronomy, The University of Leicester, UK

Abstract

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We present first results from a coordinated multiwavelength study of the neutron star low-mass X-ray binary EXO 0748 676. Fast UV, X-ray, and optical data were obtained including both spectral and timing information. We discuss how this study allows us to probe the temperature distribution within the binary and hence the geometry and efficiency of X-ray irradiation.

Resumen

Resumen

Presentamos los primeras resultados de un estudio coordinado en múltiples longitudes de onda de la estrella de neutrones de la binaria de baja masa de rayos X, EXO 0748-676 (UY Vol). Se obtuvieron datos UV rápidos, de rayos X y ópticos, incluyendo tanto información espectral como temporal. Discutimos cómo este estudio nos permite indagar sobre cuál es la distribución de temperatura dentro de la binaria y pоr lo tanto, sobre la geometría y la eficiencia de la irradiación de rayos X.

Keywords

BinariesClose — StarsIndividual (EXO 0748-676)
Type
The Contributed Papers
Information
International Astronomical Union Colloquium , Volume 194: Compact binaries in the galaxy and beyond , 2004 , pp. 12 - 13
Copyright
Copyright © Instituto de astronomia/revista mexicana de astronomίa y astrofίsica 2004

References

Dubus, G., Hameury, J.-M., & Lasota, J.-P. 2001, A&A, 373, 251 Google Scholar
Hynes, R. I., Haswell, C. A., Chaty, S., Shrader, C. R.. & Cui, W. 2002, MNRAS, 331, 169 Google Scholar
Hynes, R. I., O'Brien, K., Home, K., Chen, W., & Haswell, C. A. 1998, MNRAS, 299, L37 Google Scholar