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Author Ewing, Ian Lee, author.
Title Charge exchange investigation through line emission and comet - solar wind interaction morphology / by Ian Lee Ewing.
Published [Northridge, California] : California State University, Northridge, 2012.
 Electronic Book  QC30 .Z95 2012 E95eb    ONLINE
Description 1 online resource (v, 59 pages) : illustrations, graphs, some color.
Content Type text
still image
Format online resource
File Characteristics text file PDF
Thesis M.S. California State University, Northridge 2012.
Bibliography Includes bibliographical references (pages 58-59).
Summary Presented in this thesis is the search for new cometary X-ray emission lines in the 1000 - 2000 keV range, and tomography searching for cometary X-ray bow shocks using a sample of 5 comets observed with Chandra X-ray Observatory. The surveyed comets are: C/1999 (Linear S4), C/1999 T1 (McNaught-Hartley), 153P/2002 (Ikeya-Zhang), 2P/2003 (Encke), and C/2000 8P (Tuttle). The author modeled the spectra with an extended version of a solar wind charge exchange (SWCX) emission model and a model of emission lines at fixed energies. The author discovered new emission lines from Ikeya Zhang at 1350, 1740, 1840 and 1950 eV and identified them as being created by solar wind charge exchange with Mg XI, Si K, Si XIII, and Si XIV, respectively. The Mg XI line is significant in the spectra of other comets: Linear S4, McNaught-Hartley, and Encke, but only marginally detected for comet 8P. The silicon lines in the 1700 to 2000 eV range are detected for all comets at a significant level. The detection of solar wind ions of magnesium and silicon, also previously report at soft X-ray energies (< 300 eV) and these will be useful diagnostic for improved charge exchange models. The detection of possible X-ray bow shock for several comets is also presented.
Note Description based on online resource; title from PDF title page (viewed on June 06, 2012).
Subject Charge exchange.
X-ray astronomy.
Solar wind.
Encke comet.
Tuttle comet.
Local Subject Dissertations, Academic -- CSUN -- Physics and Astronomy.
OCLC number 850495944