Morphology and dynamics of Venus's southern polar vortex reveal a drifting circulation

This was a last-minute invited contribution to coincide with the publication of the article "Venus’s Southern Polar Vortex Reveals Precessing Circulation" in Science

Gamma-Ray Burst observations by the high-energy charged particle detector on board the CSES-01 satellite between 2019 and 2021

In this paper we report the detection of five strong Gamma-Ray Bursts (GRBs) by the High-Energy Particle Detector (HEPD-01) mounted on board the China Seismo-Electromagnetic Satellite (CSES-01), operational since 2018 on a Sun-synchronous polar orbit at a $\sim$ 507 km altitude and 97$^\circ$ inclination. HEPD-01 was designed to detect high-energy electrons in the energy range 3 - 100 MeV, protons in the range 30 - 300 MeV, and light nuclei in the range 30 - 300 MeV/n. Nonetheless, Monte Carlo simulations have shown HEPD-01 is sensitive to gamma-ray photons in the energy range 300 keV - 50 MeV, even if with a moderate effective area above $\sim$ 5 MeV. A dedicated time correlation analysis between GRBs reported in literature and signals from a set of HEPD-01 trigger configuration masks has confirmed the anticipated detector sensitivity to high-energy photons. A comparison between the simultaneous time profiles of HEPD-01 electron fluxes and photons from GRB190114C, GRB190305A, GRB190928A, GRB200826B and GRB211211A has shown a remarkable similarity, in spite of the different energy ranges. The high-energy response, with peak sensitivity at about 2 MeV, and moderate effective area of the detector in the actual flight configuration explain why these five GRBs, characterised by a fluence above $\sim$ 3 $\times$ 10$^{-5}$ erg cm$^{-2}$ in the energy interval 300 keV - 50 MeV, have been detected.Comment: Accepted for publication in The Astrophysical Journal (ApJ

ELENA representative shutter with glue thermal test

Description of thermal test of representative ELENA shutter with 3 point of glue at IAPS TV Facilit

ELENA SW threshold for anodes 1-4 in Extended Histogram mode

Test Report modo scientifico dello strumento SERENA/ELENA a bordo della missione BepiColomb

ELENA DAC ramp test

Test report della campagna dello strumento SERENA/ELENA a bordo di BepiColomb

ELENA FS vibration test report

ELENA FS (part of SERENA package for Bepi Colombo mission to Mercury) has been refurbished. Vibration test has been planned to validate the insturment before ESA delivery. This document reports ELENA FS vibration test: selected test are resonance research and comparison with the resonance spectra obtained at previous vibration test in November 201

ELENA FS test for on board procedure

Test Report di debug delle procedure sullo strumento SERENA/ELENA Flight Spare da eseguire a bordo della missione BepiColomb

ELENA test Ottobre 2020: Confronto modo S, SO e R

test report modi operativi dello strumento SERENA/ELENA Flight Spare della missione BepiColomb

ELENA Test modo R

Test report modi scientifici strumento SERENA/ELENA Flight Spare, missione BepiColomb

ELENA FS (Refurbished) Calibration Report

This document reports the results of ELENA FS calibration activity (after refurbishment), performed at IAPS in Roma @ TV facility with ENA/Ion beam in March 2018 (March 9th-March 21st). The results are considered in comparison with science performance requirement and ELENA previous calibration reports