Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Preval, Simon"'
Autor:
Bainbridge, Matthew, Barstow, Martin, Reindl, Nicole, Tchang-Brillet, W.-Ü, Ayres, Thomas, Webb, John, Barrow, John, Hu, Jiting, Holberg, Jay, Preval, Simon, Ubachs, Wim, Dzuba, Vladimir, Flambaum, Victor, Dumont, Vincent, Berengut, Julian
Hot white dwarf stars are the ideal probe for a relationship between the fine-structure constant and strong gravitational fields, providing us with an opportunity for a direct observational test. We study a sample of hot white dwarf stars, combining
Externí odkaz:
http://hdl.handle.net/10150/625061
http://arizona.openrepository.com/arizona/handle/10150/625061
http://arizona.openrepository.com/arizona/handle/10150/625061
Autor:
Wilson, David J., Gaensicke, Boris T., Koester, Detlev, Toloza, Odette, Holberg, Jay B., Preval, Simon P., Barstow, Martin A., Belardi, Claudia, Burleigh, Matthew R., Casewell, Sarah L., Cauley, P. Wilson, Chote, Paul, Farihi, Jay, Hollands, Mark A., Long, Knox S., Redfield, Seth
We present new Hubble Space Telescope (HST) ultraviolet and ground-based optical observations of the hot, metal-rich white dwarf GD 394. Extreme-ultraviolet (EUV) observations in 1992-1996 revealed a 1.15d periodicity with a 25 percent amplitude, hyp
Externí odkaz:
http://arxiv.org/abs/1811.10614
Autor:
Preval, Simon Paul
This thesis concerns atomic data, and it’s impact upon white dwarf model atmosphere calculations, and consequentially, the measurements made using such models. The thesis begins with a brief introduction to the history and properties of white dwarf
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647122
Autor:
Bainbridge, Matthew B., Barstow, Martin A., Reindl, Nicole, Tchang-Brillet, W. -Ü Lydia, Ayres, Thomas R., Webb, John K., Barrow, John D., Hu, Jiting, Holberg, Jay B., Preval, Simon P., Ubachs, Wim, Dzuba, Vladimir A., Flambaum, Victor V., Dumont, Vincent, Berengut, Julian C.
Publikováno v:
Universe 2017, 3(2), 32
Hot white dwarf stars are the ideal probe for a relationship between the fine-structure constant and strong gravitational fields, providing us with an opportunity for a direct observational test. We study a sample of hot white dwarf stars, combining
Externí odkaz:
http://arxiv.org/abs/1702.01757
Autor:
Bagdonaite, Julija, Salumbides, Edcel J., Preval, Simon P., Barstow, Martin A., Barrow, John D., Murphy, Michael T., Ubachs, Wim
Publikováno v:
Phys. Rev. Lett. 113, 123002 (2014)
Spectra of molecular hydrogen (H$_2$) are employed to search for a possible proton-to-electron mass ratio ($\mu$) dependence on gravity. The Lyman transitions of H$_2$, observed with the Hubble Space Telescope towards white dwarf stars that underwent
Externí odkaz:
http://arxiv.org/abs/1409.1000
We present a detailed spectroscopic analysis of the hot DA white dwarf G191-B2B, using the best signal to noise, high resolution near and far UV spectrum obtained to date. This is constructed from co-added \textit{HST} STIS E140H, E230H, and \textit{
Externí odkaz:
http://arxiv.org/abs/1308.4825
We present a comprehensive analysis of the far UV spectrum of G191-B2B over the range of 900-1700{\AA} using co-added data from the FUSE and STIS archives. While previous identifications made by Holberg et al. (2003) are reaffirmed in this work, it i
Externí odkaz:
http://arxiv.org/abs/1209.6196
Akademický článek
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Publikováno v:
2020 IEEE Radar Conference (RadarConf20).
This study relies on ground-based observations to quantify the limitations of current spaceborne radars when it comes to capturing the coverage and vertical structure of Warm Marine Boundary Layer (WMBL) clouds. Its finding that neither the CloudSat-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f60b69a52440c2442303ddbba59ed97
https://doi.org/10.1109/radarconf2043947.2020.9266590
https://doi.org/10.1109/radarconf2043947.2020.9266590
Akademický článek
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