We present a simple approach to understand the effect of neutrino magnetic moment on neutron star cooling. We find that a neutrino magnetic moment less than (0.2×10−12−8.5×10−10)μB is enough to explain the longer cooling times of anomalous X-ray pulsars and soft gamma repeaters compared to ordinary neutron stars.

In this paper, we derived recurrence relations for joint moment generating functions of nonadjacent generalized order statistics (GOS) of random samples drawn from doubly truncated class of continuous distributions. Recurrence relations for joint moments of nonadjacent GOS (ordinary order statistics (OOS) and k-upper records (k-RVs) as special cases) are obtained. Single and product moment gene...

Moment resisting frames as one of the conventional lateral load resisting systems in buildings suffer from some limitations including code limitations on minimum span-to-depth ratio to ensure the formation of plastic hinges with adequate length at beam ends. According to seismic codes, in ordinary steel moment resisting frames the minimum span-to-depth ratios should be limited to 5 and in speci...

Stieltjes moment problem is considered to recover a probability density function from the knowledge of its infinite sequence of ordinary moments. The approximate density is obtained through maximum entropy technique, under the constraint of few fractional moments. The latter are numerically obtained from the infinite sequence of ordinary moments and are chosen in such a way as to convey the max...

Fractional derivative in time variable is introduced into the Fokker-Planck equation of a population growth model. It’s solution, the KNO scaling function, is transformed into the generating function for the multiplicity distribution. Formulas of the factorial moment and the Hj moment are derived from the generating function, which reduces to that of the negative binomial distribution (NBD), if...

Since the 19th century, portal frames have been used to build industrial buildings because development process is fast, economical, and efficient. This research aims look at cross-section of structural elements in BS 5950-1:2000 spans 15 m 40 using SNI 1726:2019 with modal analysis, including horizontal deflection stress ratio, LRFD ASD methods. Then, structure was revised be safe against earth...

For a finite-dimensional (but possibly noncompact) symplectic manifold with a compact group acting with a proper moment map, we show that the square of the moment map is an equivariantly perfect Morse function in the sense of Kirwan, and that the set of critical points of the square of the moment map is a countable discrete union of compact sets. We show that certain integrals of equivariant co...

We have learned from Thomas Kuhn that during periods of “ordinary” science, observations and facts accumulate, conferring upon a given problem an increasing degree of complexity, up to the moment that a scientific revolution opens a new horizon and brings back more simplicity.1 Before these revolutions take place, scientists strongly experience the need for placing some order in a field that be...

The new contributions to the electron (muon) anomalous magnetic moment arising in mirror fermion theories have been calculated. Imposing the experimental constraint lowers the current upper bound on the ordinary mirror lepton mixing angles by a factor of 50 making predictions for mirror lepton production at HERA undetectably small. A way out is to allow for different mixing angles of the L and ...