Search Results - "Guilbert, P. W."

‘Cold’ material in non-thermal sources by Guilbert, P. W., Rees, M. J.

“…Accretion-driven compact sources of non-thermal radiation, such as active galactic nuclei and quasars, must contain significant amounts of gas in their central…”
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An interfacial shear term evaluation study for adiabatic dispersed air–water two-phase flow with the two-fluid model using CFD by Sharma, S.L., Hibiki, T., Ishii, M., Schlegel, J.P., Buchanan, J.R., Hogan, K.J., Guilbert, P.W.

“…•Closure form of the interfacial shear term in three-dimensional form is investigated.•Assessment against adiabatic upward bubbly air–water flow data using…”
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Numerical fits to important rates in high temperature astrophysical plasmas by Stepney, Susan, Guilbert, P. W.

“…We give simple but accurate numerical fits to various two-body rates in relativistic thermal plasmas, in the temperature range $kT_\text e \sim 50\enspace…”
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Spectral and variability constraints on compact sources by Guilbert, P. W., Fabian, A. C., Rees, M. J.

“…The spectra of compact sources which radiate significantly above 511 keV may be modified by the electron–positron pairs created by photon–photon collisions…”
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Pair production, Comptonization and dynamics in astrophysical plasmas by Guilbert, P. W., Stepney, Susan

“…Electron-positron pair production is an important cooling mechanism for plasmas at mildly relativistic temperatures. A thorough understanding of the process is…”
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Prediction of explosion pressures in confined spaces by Pritchard, D.K., Freeman, D.J., Guilbert, P.W.

“…This paper outlines the basic features of a numerical explosion model that has been developed for predicting explosion pressures and flame speeds in confined…”
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A hot intergalactic medium? by Guilbert, P. W., Fabian, A. C.

“…We have reinvestigated the possibility that a hot intergalactic medium produces the 5–200 keV X-ray background, including relativistic corrections for the gas…”
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Compton heating and cooling in thermal electron gases by GUILBERT, P. W

“…Exact results are derived for calculating Compton heating and cooling in optically thin gases. For electron temperatures less than 50 keV an asymptotic…”
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Quasi-periodic oscillations from accretion disk coronas by Boyle, C. B, Fabian, A. C, Guilbert, P. W

“…Recent observations of galactic bulge X-ray sources have revealed, in some cases, the existence of a hot accretion disk corona and, in others, quasi-periodic…”
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Pair-induced spectral changes and variability in compact X-ray sources by Fabian, A. C., Blandford, R. D., Guilbert, P. W., Phinney, E. S., Cuellar, L.

“…Inverse Compton scattering of ultraviolet photons by GeV electrons produces γ-rays which in turn create electron–positron pairs if the source is sufficiently…”
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A Compton-cooled feedback mechanism for Cygnus X-1 by Guilbert, P. W, Fabian, A. C

“…The spectrum of the X-ray source Cygnus X-1 appears to exhibit both a 'low state' and a 'high state', spending most of its time in the former. Most of the…”
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Some implications of excess soft X-ray emission from Seyfert 1 galaxies by Fabian, A. C., Guilbert, P. W., Arnaud, K. A., Shafer, R. A., Tennant, A. F., Ward, M. J.

“…The X-ray spectrum of Seyfert 1 galaxies is characterized by a hard power-law spectrum. It is often postulated that this maintains a Compton-heated two-phase…”
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Accretion disc coronae and the X-ray source in M15 by Fabian, A. C., Guilbert, P. W., Callanan, P. J.

“…Recent confirmation of the identification of the X-ray source in M15 with the blue object AC 211 and a report of a sinusoidal X-ray light curve strengthen the…”
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Numerical solution of time dependent Compton scattering problems by means of an integral equation by Guilbert, P. W.

“…Compton scattering is important in determining the spectrum of certain compact high energy X-ray sources, and so to understand these sources w must be able to…”
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The importance of trypsin in infancy and childhood by GUILBERT, P W, WOLMAN, I J

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Time-dependent X-ray spectra of Compton-cooled plasmas by Guilbert, P. W., Fabian, A. C., Ross, R. R.

“…Transmitted and reflected spectra of radiation Compton scattered by hot gas (kTe ≃ 10 and 511 keV) have been computed by two independent and complementary…”
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An interpretation of the X-ray spectrum of 4U 1822 – 37 by Fabian, A. C., Guilbert, P. W., Ross, R. R.

“…White et al. (1981) have suggested that the partial X-ray eclipse observed by them in the binary X-ray source 4U 1822 – 37 is due to an extended scattering…”
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Electron-ion coupling in rapidly varying sources by Guilbert, P. W., Fabian, A. C., Stepney, Susan

“…The Thomson depth of sources radiating at the efficiency limit must lie near unity. This allows us to deduce a general condition on the maximum electron…”
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The importance of trypsin in infancy and childhood. II. Clinical considerations by GUILBERT, P W, BARBERO, G J

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