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Explorations into 3D Doppler Tomography of Interacting Binaries

Published online by Cambridge University Press:  21 February 2013

Mercedes T. Richards  and
Alexander S. Cocking
Mercedes T. Richards
Affiliation:
Pennsylvania State University, Department of Astronomy & Astrophysics, 525 Davey Lab, University Park, PA 16802, USA, email: [email protected]
Alexander S. Cocking
Affiliation:
Pennsylvania State University, Department of Astronomy & Astrophysics, 525 Davey Lab, University Park, PA 16802, USA, email: [email protected]
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Abstract

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Over the past twenty-five years, the technique of Doppler tomography has produced many 2D images of the accretion structures and other gas flows in a range of systems containing compact and non-compact stars, including cataclysmic variables, polars, Algols, x-ray, and gamma-ray binaries. Recent 3D images derived from the Radio astronomical Approach (RA) have revealed prominent gas motions beyond the central plane, and display the usual characteristics found in 2D images, as well as new evidence of tilted or precessing accretion disks around the mass gainer, and magnetic loop prominences and coronal mass ejections associated with the donor star. In this work, we have compared new 3D images derived from the back projection tomography technique with those derived from the RA method. In general, back projection produces sharper and more distinctive images than the RA method, thereby permitting a more detailed study of the physical properties of the accretion sources.

Keywords

Accretionaccretion disks(stars:) binaries techniques: image processingX-rays: binariesgamma rays: observationsstars: individual (β Per, U CrB, RS Vul, Cyg X-1)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S290: Feeding Compact Objects: Accretion on All Scales , August 2012 , pp. 301 - 302
Copyright
Copyright © International Astronomical Union 2013

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