The Library
X-ray luminosities of optically selected cataclysmic variables and application to the Galactic ridge X-ray emission
Tools
Reis, R. C., Wheatley, P. J., Gänsicke, B. T. (Boris T.) and Osborne, John (2013) X-ray luminosities of optically selected cataclysmic variables and application to the Galactic ridge X-ray emission. Monthly Notices of the Royal Astronomical Society, Volume 430 (Number 3). pp. 1994-2001. doi:10.1093/mnras/stt025 ISSN 0035-8711.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1093/mnras/stt025
Abstract
By studying Swift X-ray spectra of an optically selected, non-magnetic sample of nearby cataclysmic variables (CVs), we show that there is a population with X-ray luminosity much lower than accounted for in existing studies. We find an average 0.5–10.0 keV luminosity of 8×1029ergs−1 which is an order of magnitude lower than observed in previous samples. Looking at the co-added X-ray spectrum of 20 CVs, we show that the spectral properties of this optically selected, low X-ray luminosity sample – likely characteristic of the dominant population of CVs – resemble that of their brighter counterpart, as well as the X-ray emission originating in the Galactic ridge. It is argued that if the space density of CVs is greater than the current estimates, as it is indeed predicted by population synthesis models, then CVs can significantly contribute to the Galactic ridge emission.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||
Publisher: | Oxford University Press | ||||
ISSN: | 0035-8711 | ||||
Official Date: | 2013 | ||||
Dates: |
|
||||
Volume: | Volume 430 | ||||
Number: | Number 3 | ||||
Page Range: | pp. 1994-2001 | ||||
DOI: | 10.1093/mnras/stt025 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |