Neutrino energy-loss rate in 331β model

We evaluate the stellar energy-loss rates [Formula: see text] due to the production of neutrino pair in 3-3-1 models. The energy loss rate [Formula: see text] is evaluated for different values of [Formula: see text] in which [Formula: see text] is a parameter used to define the charge operator in the 331 models. We show that the contribution of dipole moment to the energy loss rate is small compared to the contribution of new natural gauge boson [Formula: see text]. The correction [Formula: see text] compared with that of Standard Model is evaluated and do not exceed 14% and is highest with [Formula: see text]. Of all the evaluated models, model with [Formula: see text] give a relative large [Formula: see text] correction for the mass of [Formula: see text][Formula: see text] GeV. This mass range is within the searching range for [Formula: see text] boson at LHC.

Dispersion (asymptotic) theory of charged-particle transfer reactions and nuclear astrophysics

A new asymptotic theory is proposed for the peripheral transfer A(x, y)B reaction at low energies within the three-body (A, a and y) model by com bining the dispersion theory and DWBA, where x= y + a, B= A + a, and a is a transferred particle. The results of the analysis of the differential cross sections of the proton transfer 9Be(1°B, 9Be)1°B reaction at the 1°B projectile energy of 100 MeV populating the ground and excited states of the residual nucleus are presented. New estimates and their uncertainties are obtained for values of the asymptotic normalization coefficients for 9Be + p ^ 1°B and for the astrophys- ical S factors at stellar energy of the radiative capture 9Be(ρ, γ)1°B reaction.

Renewable Energy Power for A Sustainable Energy for Future

: Energy is a fundamental aspect in human life. It acts as blood for humans. No energy means no facility and frozen life activities. It needs for agricultural, economics and in domestic level etc. demands of energy is increasing day by day as increases population especially in developing countries. To meet energy requirement renewable energy is more efficient; no greenhouse effect, no emission of CO2, create least amount of resultant wastes, are sustainable base lying on existing and prospect financial and societal desire, no pollution and a safe environment to breathe freely. Mostly renewable energy comes as of ordinary source the same as wind energy, lunar and stellar energy, Bioenergy and hydropower energy etc.

Asymptotic theory of charged particle transfer reactions at low energies and nuclear astrophysics

An asymptotic theory is proposed for the peripheral transfer [Formula: see text] reaction at low energies within the three-body ([Formula: see text], [Formula: see text] and [Formula: see text]) model by combining the dispersion theory and DWBA, where [Formula: see text], [Formula: see text] and [Formula: see text] is a transferred particle. The contribution of the three-body ([Formula: see text], [Formula: see text] and [Formula: see text]) Coulomb dynamics of the transfer mechanism both to the peripheral partial amplitudes for the partial wave [Formula: see text] and to the DWBA amplitude is investigated. The results of the analysis of the differential cross sections of the specific proton transfer reactions at above-barrier energies are presented. New estimates and their uncertainties are obtained for values of the asymptotic normalization coefficients for [Formula: see text] and [Formula: see text] as well as for the direct astrophysical [Formula: see text] factors at stellar energy of the radiative capture [Formula: see text] and [Formula: see text] reactions.

Natural and artificial spectral edges in exoplanets

Technological civilizations may rely upon large-scale photovoltaic arrays to harness energy from their host star. Photovoltaic materials, such as silicon, possess distinctive spectral features, including an ‘artificial edge' that is characteristically shifted in wavelength shortwards of the ‘red edge' of vegetation. Future observations of reflected light from exoplanets would be able to detect both natural and artificial edges photometrically, if a significant fraction of the planet's surface is covered by vegetation or photovoltaic arrays, respectively. The stellar energy thus tapped can be utilized for terraforming activities by transferring heat and light from the day side to the night side on tidally locked exoplanets, thereby producing detectable artefacts.