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P.D. Gensheimer 《Astrophysics and Space Science》1997,251(1-2):199-202
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We consider star models consisting of spin 0 particles interacting only gravitationally, e.g. Higgs-particles as possible
dark matter objects. The particle gas of finite temperature is treated according to the Bose-Einstein-statistics in its non-
relativistic limit; then the use of Newtonian gravity is sufficient too. The limits of these restrictions are estimated. The
local temperature is determined with the use of energy conservation. The mass-radius relation of the objects and their further
behaviours as Bose-Einstein-condensation in the outer regions are calculated. We find strong similarities with the features
of white dwarfs and neutron stars.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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Bird M. K. Janardhan P. Wilson T. L. Huchtmeier W. K. Gensheimer P. Lemme C. 《Earth, Moon, and Planets》1997,78(1-3):21-28
K-band radio observations of comet Hale-Bopp (C/1995 O1) were conducted in March/April 1997 at the 100-m Telescope of the
Max-Planck-Institut für Radioastronomie. Emission was firmly detected from the five lowest metastable (J = K)inversion transitions
of ammonia. Assuming a thermal distribution for the metastable states of NH3, we derive a rotational temperature of 104 ± 30 K and an ammonia production rate at perihelion of6.6 ± 1.3 × 1028 s-1.The updated ammonia-to-water abundance ratio is found to be of the order of 1.0%. We also report a marginal detection of
the 616–523transition line of water at λ = 1.35 cm.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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