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View article: Describing dietary patterns of high-intensity functional training athletes: a cross-sectional study
Describing dietary patterns of high-intensity functional training athletes: a cross-sectional study Open
Background High-Intensity Functional Training (HIFT; e.g. CrossFitⓇ, F45Ⓡ, HyroxⓇ) is rapidly increasing in global participation. HIFT is a strenuous form of training that requires adequate dietary practices to optimize recovery and perfor…
View article: Agreement between a photogrammetry-derived five-compartment body-composition model and a three-compartment criterion among adult athletes
Agreement between a photogrammetry-derived five-compartment body-composition model and a three-compartment criterion among adult athletes Open
Background Four- and five-compartment models are the widely accepted criterion for body composition, accounting for body mass, bone mineral content, total body water (TBW), and total body volume (TBV). However, the need for underwater weig…
View article: Dietary supplement use in high-intensity functional training (HIFT) athletes by competition level
Dietary supplement use in high-intensity functional training (HIFT) athletes by competition level Open
Background Dietary supplements (DS) are used by athletes to aid sport-specific performance and recovery. High Intensity Functional Training (HIFT) is a unique sport with muscular strength/power/endurance, aerobic endurance, and rehydration…
View article: Radio frequency shielding effectiveness of carbon-nanotube-based x-ray filters
Radio frequency shielding effectiveness of carbon-nanotube-based x-ray filters Open
Optical and thermal blocking filters are critical components in X-ray space observatories, their primary function is to minimize unwanted radiation that could reduce the performance of highly sensitive detectors. As detector sensitivity ad…
View article: Oxidation of aluminum coating on ultrathin films of carbon nanotubes as filters for high-energy astrophysics space missions
Oxidation of aluminum coating on ultrathin films of carbon nanotubes as filters for high-energy astrophysics space missions Open
All high-energy missions require filters to reject unwanted radiation and to prevent contamination from molecules and particles onto sensitive devices. Aluminum-coated carbon nanotube pellicles represent an intriguing option for such missi…
View article: Development of a Cryogenic Vacuum Facility for Structural and Thermal Testing of ARIEL’s Primary Mirror (M1 SM) at INAF Palermo
Development of a Cryogenic Vacuum Facility for Structural and Thermal Testing of ARIEL’s Primary Mirror (M1 SM) at INAF Palermo Open
ARIEL (Atmospheric Remote-sensing Infrared Exoplanet Large-survey) is an ESA mission scheduled for launch around 2030, aimed at investigating the atmospheres of exoplanets through infrared spectroscopy. To support the ground qualification …
View article: Ground calibration plan for the Athena/X-IFU microcalorimeter spectrometer
Ground calibration plan for the Athena/X-IFU microcalorimeter spectrometer Open
The X-ray Integral Field Unit is the X-ray imaging spectrometer on-board one of ESA's next large missions, Athena. Athena is set to investigate the theme of the Hot and Energetic Universe, with a launch planned in the late-2030s. Based on …
View article: The X-ray Integral Field Unit at the end of the Athena reformulation phase
The X-ray Integral Field Unit at the end of the Athena reformulation phase Open
The Athena mission entered a redefinition phase in July 2022, driven by the imperative to reduce the mission cost at completion for the European Space Agency below an acceptable target, while maintaining the flagship nature of its science …
View article: STROBE-X High Energy Modular Array (HEMA)
STROBE-X High Energy Modular Array (HEMA) Open
The High Energy Modular Array (HEMA) is one of three instruments that compose the STROBE-X mission concept. The HEMA is a large-area, high-throughput non-imaging pointed instrument based on the Large Area Detector developed as part of the …
View article: The Line Emission Mapper (LEM) probe mission concept
The Line Emission Mapper (LEM) probe mission concept Open
International audience
View article: Coronal energy release by MHD avalanches
Coronal energy release by MHD avalanches Open
Context. Magnetohydrodynamic (MHD) instabilities, such as the kink instability, can trigger the chaotic fragmentation of a twisted magnetic flux tube into small-scale current sheets that dissipate as aperiodic impulsive heating events. In …
View article: Coronal energy release by MHD avalanches II. EUV line emission from a multi-threaded coronal loop
Coronal energy release by MHD avalanches II. EUV line emission from a multi-threaded coronal loop Open
MHD kink instability can trigger the fragmentation of a twisted magnetic flux tube into small-scale current sheets that dissipate as aperiodic impulsive heating events. This instability propagates as an avalanche to nearby flux tubes and l…
View article: HERMES: Gamma-ray burst and gravitational wave counterpart hunter
HERMES: Gamma-ray burst and gravitational wave counterpart hunter Open
Gamma-ray bursts (GRBs) bridge relativistic astrophysics and multimessenger astronomy. Space–based γ - and X-ray wide-field detectors have proven essential for detecting and localizing the highly variable GRB prompt emission, which is also…
View article: HERMES: Gamma Ray Burst and Gravitational Wave counterpart hunter
HERMES: Gamma Ray Burst and Gravitational Wave counterpart hunter Open
Gamma Ray Bursts (GRBs) bridge relativistic astrophysics and multi-messenger astronomy. Space-based gamma/X-ray wide field detectors have proven essential to detect and localize the highly variable GRB prompt emission, which is also a coun…
View article: Thermalization of Mesh Reinforced Ultra-Thin Al-Coated Plastic Films: A Parametric Study Applied to the Athena X-IFU Instrument
Thermalization of Mesh Reinforced Ultra-Thin Al-Coated Plastic Films: A Parametric Study Applied to the Athena X-IFU Instrument Open
The X-ray Integral Field Unit (X-IFU) is one of the two focal plane detectors of Athena, a large-class high energy astrophysics space mission approved by ESA in the Cosmic Vision 2015–2025 Science Program. The X-IFU consists of a large arr…
View article: Multi-technique investigation of silicon nitride/aluminum membranes as optical blocking filters for high-energy space missions
Multi-technique investigation of silicon nitride/aluminum membranes as optical blocking filters for high-energy space missions Open
X-ray detectors for space astrophysics missions are susceptible to noise caused by photons with energies outside the operating energy range; for this reason, efficient external optical blocking filters are required to shield the detector f…
View article: Elastic characterization of nanometer-thick polymeric film for astrophysics application with an experimental-numerical method
Elastic characterization of nanometer-thick polymeric film for astrophysics application with an experimental-numerical method Open
The x-ray detectors on board astrophysics space missions require optical blocking filters that are highly transparent to x-rays. The filter design typically consists of a polymeric film that is a few tens of nanometers thick coated with al…
View article: Design and acoustic tests of the ATHENA WFI filter wheel assembly development model towards TRL5
Design and acoustic tests of the ATHENA WFI filter wheel assembly development model towards TRL5 Open
The filter wheel (FW) assembly (FWA), developed by the CBK Institute, is one of the critical subsystems of the wide field imager (WFI) instrument on board the Advanced Telescope for High Energy Astrophysics—mission of the ESA Cosmic Vision…
View article: The large area detector onboard the eXTP mission
The large area detector onboard the eXTP mission Open
The Large Area Detector (LAD) is the high-throughput, spectral-timing instrument onboard the eXTP mission, a flagship mission of the Chinese Academy of Sciences and the China National Space Administration, with a large European participati…
View article: The Athena X-ray Integral Field Unit: a consolidated design for the system requirement review of the preliminary definition phase
The Athena X-ray Integral Field Unit: a consolidated design for the system requirement review of the preliminary definition phase Open
The Athena X-ray Integral Unit (X-IFU) is the high resolution X-ray spectrometer, studied since 2015 for flying in the mid-30s on the Athena space X-ray Observatory, a versatile observatory designed to address the Hot and Energetic Univers…
View article: Filters for X-ray detectors on Space missions
Filters for X-ray detectors on Space missions Open
Thin filters and gas tight windows are used in Space to protect sensitive X-ray detectors from out-of-band electromagnetic radiation, low-energy particles, and molecular contamination. Though very thin and made of light materials, filters …