Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-20T00:54:25.461Z Has data issue: false hasContentIssue false

The CHANDRA data of the Classical Nova RR Pic (1925): A possible Magnetic Cataclysmic Variable Candidate

Published online by Cambridge University Press:  12 April 2016

Şölen Balman
Affiliation:
Middle East Technical University, Physics Dept., Inönü Bulvarn, Ankara, Turkey
Aybuke Küpcü-Yoldaş
Affiliation:
Middle East Technical University, Physics Dept., Inönü Bulvarn, Ankara, Turkey

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

During 25ksec of CHANDRA ACIS-S3 observations of the old nova RR Pic 1925 a count rate of 0.067±0.0017 c/s was detected. The results show evidence (spatial and spectral) for X-ray emission from the region around the prominent SW blob in the Hα images. Shell emission is detected with count rate ≥ (1.95±1.33)×10−3 c/s. The spectral analysis shows that the source spectrum can not be explained by a single or two temperature bremsstrahlung or VMEKAL models including photoelectric absorption, only models using powerlaw distribution of temperature fit the data well and indicate excess O, Al, Mg, S, and Si in the source spectrum. A soft excess in the CHANDRA data could be explained by a partial covering absorber model with covering fraction in a range 14-86 % consistent with characteristics of the Magnetic Cataclysmic Variable systems. The light curve shows significant orbital and other modulations.

Type
Part 3. A. Accretion Plasma diagnostics - Observations
Copyright
Copyright © Astronomical Society of the Pacific 2004

References

Balman, Ş. 2002, in AIP conf Ser., 637, Classical Nova Explosions, eds. Hernanz, M. & Jose, J. (New York: AIP), 365 Google Scholar
Gill, C. D. & O’Brien, T. J. 1998, A&A, 300, 221 Google Scholar
Kubiak, M. 1984, Acta Astronomica, 34, no. 3, 331 Google Scholar
Singh, K. P., White, N. E., & Drake, S. A. 1996, ApJ, 456, 766 Google Scholar
Warner, B. 1981, MNRAS, 195, 101 CrossRefGoogle Scholar