On November 6, 2011, during the E16 flyby, the Cassini Radar had a unique opportunity to closely observe Enceladus in both its active and passive modes of operation. The E16 swath aimed at about 66°S, close to the active South polar rifted area. In this paper, we show that the radiometry data collected during this flyby revealed brightness temperatures much higher than expected, pointing to a g...

We have analyzed the 241 bursts for which peak counts (C)max exist in the publicly available Burst and Transient Source Experiment (BATSE) catalog. Introducing peak counts in 1024 ms as a measure of burst brightness B and the ratio of peak counts in 64 and 1024 ms as a measure of short timescale variability V , we find a statistically significant correlation between the brightness and the short...

Abstract Every large world-class observatory must operate in a very dark environment that is as free possible of anthropogenic sources light pollution, which can degrade the quality ground-based astronomical observations. A LIDAR able to measure, and subtract from its laser return signals, corresponding contribution night-sky brightness. Our elastic system operated semi-continuous mode at night...

Harmonic lasing is a possible mode of operation of X-ray FEL user facilities that allows us to provide brilliant beams of higher energy photons for user experiments. Another useful application of harmonic lasing is the so-called harmonic lasing self-seeded free electron laser (HLSS FEL) that allows the improvement of spectral brightness of these facilities. In the past, harmonic lasing has been...

Introduction: Two-dimensional (2D)-phased vertical cavity surface-emitting laser (VCSEL) arrays offer unique advantages for scaling up single-mode power for high-brightness applications such as fibre laser pumps. They tend, however, to operate in the undesirable out-of-phase mode, which has an on-axis null in the far field [1]. In-phase VCSEL arrays with an on-axis maximum in the far field have...

We report on the first Kerr-lens mode-locked laser based Yb 3+ -doped disordered strontium lanthanum aluminate crystal, Yb:SrLaAlO 4 (Yb:SALLO), pumped by a high-brightness fiber at 976 nm. Nearly Fourier-limited pulses as short 44 fs were achieved 1051 nm with an average output power of 277 mW and pulse repetition rate ?66 MHz via soft-aperture mode-locking. A higher 459 mW, corresponding to o...

Zero-mode waveguide (ZMW) nanoapertures are widely used to monitor single molecules beyond the range accessible normal microscopes. However, several aspects of ZMW influence on photophysics fluorophores remain inadequately documented and sometimes controversial. Here, we thoroughly investigate fluorescence immobilized Cy3B Alexa 647 molecules, detailing interplays between brightness, lifetime, ...