Limb brightening on Uranus - A prediction.
Intensity variation across Uranus disk during limb darkening-brightening cycles observations to test cloud absence theory, predicting limb brightening in methane bands
Belton, M. J. S.↗
Engineering topics
Price, M. J.
Publications and source records attributed to Price, M. J..
Optical scattering properties of Saturn's ring.
Reliable data defining the photometric function of the Saturn ring system at visual (V) wavelengths are interpreted in terms of a simple scattering model. To facilitate the analysis, new photographic photometry of the ring has been carried out utilizing the Lowell observatory plate collection. Homogeneous measurements of the mean surface brightness (rings A and B together), covering almost the complete range in planetocentric solar declination angle, are presented. The ring model adopted is a plane-parallel slab of isotropically scattering particles; the single scattering albedo and the perpendicular optical thickness are both arbitrary. Results indicate that primary scattering is inadequate to describe the photometric properties of the ring; multiple scattering predominates for all angles of tilt with respect to the Sun and Earth.
Price, M. J.↗
The physical properties of the Jovian atmosphere inferred from eclipses of the Galilean satellites. II - 1971 apparition.
Further simultaneous two-color photoelectric photometry of Ganymede was carried out at blue (4500 A) and yellow (5790 A) wavelengths during its eclipse by Jupiter on Mar. 10, 1971. In both colors, the shape of the ingress light curve was again reliably determined for extinctions up to 9 mag. Neither curve showed any evidence of a refraction tail. The observations have been interpreted in terms of the local optical transmission properties of the Jovian atmosphere. At gas number densities of about 5 x 10 to the 18th power per cu cm the maximum photon scattering mean free path at visual wavelengths was 47 km atm. Evidence indicates that neither a simple reflecting-layer model or a semiinfinite homogeneous scattering model provides an adequate physical description of the atmosphere.
Price, M. J.↗
A survey of candidate missions to explore Saturn's rings
The ring system around Saturn is discussed. Exploration of the rings is required for an understanding of their origin and the hazard they represent to spacecraft near Saturn. In addition the rings may provide useful clues to the origin of the solar system. This study examines the problem of ring system exploration and recommends a sequence of missions which will collect the data required.
Wells, W. C.↗
Photometric radii of Io and Europa.
Simultaneous two-color photoelectric photometry of Io and Europa performed during their eclipse by Jupiter on the night of April 5/6, 1971, is reported and discussed. The results are compared with satellite radii obtained using other observational techniques. It is concluded that the eclipse technique can be used to infer satellite radii accurate to plus or minus 10 per cent. In principle the eclipse technique can also be applied to the satellites of Saturn, Uranus, and Neptune for early objective determinations of their radii.
Price, M. J.↗
On the inference of the physical properties of the Jovian atmosphere from photometry of eclipses of the Galilean satellites
Jupiter atmosphere physical properties inferred from photometry of Galilean satellite eclipses
Price, M. J.↗
A preliminary study of composite orbiter/ lander missions to satellites of the outer planets
Objectives and payload requirements for composite orbiter/lander missions to satellites of outer planets
Price, M. J.↗
Preliminary feasibility study of soft-lander missions to the Galilean satellites of Jupiter
Feasibility study of soft lander missions to Galilean satellites of Jupiter
Price, M. J.↗
A relaxation method for the computation of model stellar atmospheres.
Monte Carlo relaxation method for physically self consistent model stellar atmospheres, discussing stability, accuracy and convergence of solution
Price, M. J.↗