Zobrazeno 1 - 10
of 68
pro vyhledávání: '"CHRISTOPHER W. MAUCHE"'
Using L-shell x-ray spectra to determine conditions of non-local thermal dynamic equilibrium plasmas
Autor:
J. Emig, Duane A. Liedahl, Gregory Kemp, E. Marley, Christopher W. Mauche, Leonard Jarrott, Y. Frank, Klaus Widmann, Marilyn Schneider, Mark Foord, Robert Heeter
Publikováno v:
The Review of scientific instruments. 89(10)
K-shell x-ray spectra of Li- to H-like ions have long been used to determine plasma conditions. The ratio of integrated line intensities is used to determine the temperature. At the density of non-local thermal dynamic equilibrium (NLTE) plasmas (n e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::132f1f32abfc555ca8ec5e278a1d79c7
https://pubmed.ncbi.nlm.nih.gov/30399788
https://pubmed.ncbi.nlm.nih.gov/30399788
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 2, Iss 1, Pp 143-147 (2015)
The X-ray spectrum of SS Cyg in outburst has a very soft component that can be interpreted as the fast-rotating optically thick boundary layer on the white dwarf surface. This component was carefully investigated by Mauche (2004) using the Chandra LE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b5534ae4c30cfd441a56c63155a52ae
https://ojs.cvut.cz/ojs/index.php/APP/article/view/2866
https://ojs.cvut.cz/ojs/index.php/APP/article/view/2866
Autor:
Christopher W. Mauche, M. A. Barrios, David Turnbull, M. D. Rosen, O. S. Jones, Howard A. Scott, Cliff Thomas, David Strozzi, L. J. Suter, Stephanie Hansen, Alastair Moore, William Farmer, Jay D. Salmonson, Duane A. Liedahl
Publikováno v:
Physics of Plasmas
For several years, we have been calculating the radiation drive in laser-heated gold hohlraums using flux-limited heat transport with a limiter of 0.15, tabulated values of local thermodynamic equilibrium gold opacity, and an approximate model for no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3943ab39632673e1a50fbe51204857f
http://europepmc.org/articles/PMC5438280
http://europepmc.org/articles/PMC5438280
Autor:
Christopher W. Mauche
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 369:1983-1987
Taking advantage of the very precise de Jager et al. optical white dwarf orbit and spin ephemerides; ASCA, XMMN, and Chandra X-ray observations spread over 10 yrs; and a cumulative 27 yr baseline, we have found that in recent years the white dwarf in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da76d976e2266daf6f814cc41ce70459
https://doi.org/10.1111/j.1365-2966.2006.10447.x
https://doi.org/10.1111/j.1365-2966.2006.10447.x
Autor:
Christopher W. Mauche
Publikováno v:
The Astrophysical Journal. 610:422-426
We have fitted the Chandra Low Energy Transmission Grating spectrum of SS Cygni in outburst with a single temperature blackbody suffering the photoelectric opacity of a neutral column density and the scattering opacity of an outflowing wind. We find
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccabe09c82a359055eb54534652ad6e9
https://doi.org/10.1086/421438
https://doi.org/10.1086/421438
Autor:
John C. Raymond, Christopher W. Mauche, Mario A. Jimenez-Garate, Duane A. Liedahl, Benjamin F. Mathiesen
Publikováno v:
The Astrophysical Journal. 606:168-172
By means of a Monte Carlo code that accounts for Compton scattering and photoabsorption followed by recombination, we have investigated the radiation transfer of Ly alpha, He alpha, and recombination continua photons of H- and He-like C, N, O, and Ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8a0fa84de3bebc64d546e39b88b44ff
https://doi.org/10.1086/382938
https://doi.org/10.1086/382938
Publikováno v:
International Astronomical Union Colloquium. 190:124-127
Using the Livermore X-ray Spectral Synthesizer, which calculates spectral models of highly charged ions based on HULLAC atomic data, we investigate the temperature, density, and photoexcitation dependence of the I(11.92 A)/I(11.77 A) line ratio of Fe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7de14c949a4845523383ba3765520a37
https://doi.org/10.1017/s0252921100001949
https://doi.org/10.1017/s0252921100001949
Autor:
Christopher W. Mauche
Publikováno v:
International Astronomical Union Colloquium. 190:120-123
We use hard X-ray light curves measured by the Chandra HETG and RXTE PCA during the late rise and plateau phases of the 2002 March–April outburst of the intermediate polar GK Per to determine that its X-ray pulse period P = 351.332 ± 0.002 s. Comb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::800762e6534a9fe0f8fb4562664063ec
https://doi.org/10.1017/s0252921100001937
https://doi.org/10.1017/s0252921100001937
Autor:
Ignacio Negueruela, W. Hummel, Christopher W. Mauche, G. L. Israel, G. Marconi, Ulisse Munari, Stefano Covino, Sandro Mereghetti, Luigi Stella, Sergio Campana
Publikováno v:
The Astrophysical Journal. 598:492-500
We report on the first near-simultaneous X-ray and optical observations of RX J0806.3+1527. The source is believed to be a 321s orbital period ultra-compact binary system hosting an X-ray emitting white dwarf. Data were obtained with Chandra and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c091b7ef4512f7900c44a9a4d60fb9ad
https://doi.org/10.1086/378803
https://doi.org/10.1086/378803