High Spectral Resolution X-ray Observation of Magnetic CVs: EX Hya

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In magnetic cataclysmic variables (CVs) the primary is a highly magnetized white dwarf (WD) whose field controls the accretion flow close to the WD, leading to a shock and accretion column that radiate chiefly in X-rays. We present preliminary results from a 500 ks Chandra HETG observation of the brightest magnetic CV EX Hya. From the observational dataset we are able to measure the temperature and density at different points of the cooling accretion column using sensitive line ratios. We also construct line-based light curves to search for rotational modulation of the X-ray emission.

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Luna, G; Brickhouse, N S & Mauche, C W April 7, 2008.

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In magnetic cataclysmic variables (CVs) the primary is a highly magnetized white dwarf (WD) whose field controls the accretion flow close to the WD, leading to a shock and accretion column that radiate chiefly in X-rays. We present preliminary results from a 500 ks Chandra HETG observation of the brightest magnetic CV EX Hya. From the observational dataset we are able to measure the temperature and density at different points of the cooling accretion column using sensitive line ratios. We also construct line-based light curves to search for rotational modulation of the X-ray emission.

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PDF-file: 3 pages; size: 0.3 Mbytes

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  • Presented at: HEAD 2008, Los Angeles, CA, United States, Mar 31 - Apr 03, 2008

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  • Report No.: LLNL-CONF-402889
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 928558
  • Archival Resource Key: ark:/67531/metadc894117

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  • April 7, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 29, 2016, 12:47 p.m.

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Luna, G; Brickhouse, N S & Mauche, C W. High Spectral Resolution X-ray Observation of Magnetic CVs: EX Hya, article, April 7, 2008; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc894117/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.