The evolution of scale-invariant gravity waves from the early universe is analyzed using an equation of state which smoothly interpolates between the radiation dominated era and the present matter dominated era. We find that for large wavenumbers the standard scale-invarant wavefunction for the gravity wave severely underestimates the actual size of the gravity wave. Moreover, there is a defini...

We report the results of a double-slit-like experiment in the infrared range, which confirm those of a previous one by evidencing an anomalous behaviour of photon systems under particular (energy and space) constraints. These outcomes (independently confirmed by crossing photon beam experiments in both the optical and the microwave range) apparently rule out the Copenhagen interpretation of the...

We present results from Chandra X-ray imaging and spectroscopy of a flux-limited sample of flat spectrum radio-emitting quasars with jet-like extended structure. Twelve of twenty quasar jets are detected in 5 ks ACIS-S exposures. The quasars without X-ray jets are not significantly different from those in the sample with detected jets except that the extended radio emission is generally fainter...

An experiment designed to search for prompt microwave bursts from supernovae (SN) in the Coma cluster of galaxies has already been described elsewhere (Jelley et al., 1974, subsequently referred to as Paper I). We present here the results from extended observations at five widely separated sites, on the central region of the Perseus cluster of galaxies, along with a calibration carried out on S...

Wave breaking is important for understanding of both sea wave dynamics and microwave scattering/emission of the ocean. Experimental studies of breaking waves are mostly related to tank measurements and to a lesser extent to field observations [1, 2]. Theoretical results regarding wave breaking are mostly obtained by numerical simulation [3]. Comparison of those with tank experiments leads to th...

Nadir-looking microwave radiometers are flown on different altimeter missions to correct the altimeter range for water vapor and cloud liquid water path delay in the troposphere. Actually four sensors, TOPEX, JASON-1, ERS2, and ENVISAT micro-wave radiometers (MWR) provide continuous measurements and the aim of this paper is to compare their measured brightness temperatures over the same hot ref...

Today, marine radar-image sequences are used on an operational basis to measure ocean surface wave parameters [1] [2]. In addition, they have shown to be useful in measuring the evolution of individual waves in time and space [3] [4], current and bathymetry fields [5] [6] [7] as well as surface wind fields [8]. The typical marine radar systems used for these applications operate in the X-band a...

A methodology to calculate generalized coherent states for a periodically driven system is presented. We study wave packets constructed as a linear combination of suitable Floquet states of the three-dimensional Rydberg atom in a microwave field. The driven coherent states show classical space localization, spreading, and revivals and remain localized along the classical trajectory. The microwa...

We present a comparison between two observational and three theoretical mass functions for eight cosmological models suggested by the data from recently completed BOOMERANG-98, MAXIMA-1 cosmic microwave background (CMB) anisotropy experiments as well as peculiar velocities (PV) and Type Ia Supernovae (SN) observations. The cosmological models have been proposed as the best fit models by several...

The RXTE satellite observed the Coma cluster for ∼177 ks during November and December 2000, a second observation motivated by the intriguing results from the first ∼87 ks observation in 1996. Analysis of the new dataset confirms that thermal emission from isothermal gas does not provide a good fit to the spectral distribution of the emission from the inner 1 radial region. While the observed sp...