In this paper, we have studied the energy spectra and B(E2) transition probabilities of 124-130 Ba isotopes in the shape phase transition region between the spherical and gamma unstable deformed shapes. We have used a transitional Interacting Boson Model Hamiltonian which is based on affine SU(1,1) Lie Algebra in the both IBM-1 and 2 versions and also the Catastrophe theory in combination with ...

Our knowledge of the high-energy emission spectra from black-hole candidates has increased enormously with missions like BeppoSAX and RossiXTE, thanks to their broad-band window. I present the main and most solid points of this current knowledge, both in terms of detailed spectral modeling of X-ray broad-band spectra, and more generally in relation to the “black-hole state paradigm”, which link...

Effect of radiation of many photons by a single electron traversing a target is discussed. When the summary energy of emitted photons (the energy losses spectrum) is measured only, the photon spectrum is distorted comparing with the photon spectrum in one interaction. Influence of this effect is discussed for the cases (1) bremsstrahlung (described by Bethe-Heitler formula), (2) the strong Land...

A technique of timescale analysis performed directly in the time domain has been developed recently. We have applied the technique to study rapid variabilities of hard X-rays from neutron star and black hole binaries, γ-ray bursts and terrestrial γ-ray flashes. The results indicate that the time domain method of spectral analysis is a powerful tool in revealing the underlying physics in high-en...

The specific heat corresponding to systems with deterministic fractal energy spectra is known to present logarithmic-periodic oscillations as a function of the temperature T in the low T region around a mean value given by a characteristic dimension of the energy spectrum. In general, it is considered that the presence of disorder does not affect strongly these results, and that the fractal str...

Submesoscale (1–200km) wavenumber spectra of kinetic and potential energy and tracer variance are obtained from in situ observations in theGulf Stream region and in the eastern subtropical North Pacific. In the Gulf Stream region, steep kinetic energy spectra at scales between 200 and 20km are consistent with predictions of interior quasigeostrophic–turbulence theory, both in the mixed layer an...

Advances in the semiconductor technologies allow the realization of quantum dot structure in which a finite number of electrons are confined by an artificial potentials [1–3]. The number of electrons in a quantum dot, denoted N , which can also be controlled experimentally, affects many physical properties of the quantum dot. By changing the quantum dot size and the number of electrons, far-inf...

The energy spectra of light charged particles and intermediate mass fragments from 112Sn+ 112Sn and 124Sn+ 124Sn collisions at an incident energy of E/A = 50 MeV have been measured with a large array of silicon strip detectors. We used charged-particle multiplicities detected in an array with nearly 4π coverage to select data from the central collision events. We study isospin observables analo...

We present the spectral analysis of duration-integrated broadband spectra (in ∼ 30 keV−200 MeV) of 15 bright BATSE gamma-ray bursts (GRBs). Some GRB spectra are very hard, with their spectral peak energies being above the BATSE LAD passband limit of ∼2 MeV. In such cases, their highenergy spectral parameters (peak energy and high-energy power-law indices) cannot be adequately constrained by BAT...