J. M. Jerónimo
A5087622506- Astro and Planetary Science
- Planetary Science and Exploration
- Atmospheric Ozone and Climate
- Stellar, planetary, and galactic studies
- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Astrophysics and Star Formation Studies
- Geomagnetism and Paleomagnetism Studies
- Spacecraft Design and Technology
- Calibration and Measurement Techniques
- Optical and Acousto-Optic Technologies
- Atmospheric aerosols and clouds
- Aerospace Engineering and Energy Systems
- Space Satellite Systems and Control
- Scientific Research and Discoveries
- Gas Sensing Nanomaterials and Sensors
- Spacecraft Dynamics and Control
- Geology and Paleoclimatology Research
- High-pressure geophysics and materials
- Maritime Navigation and Safety
- Spectroscopy and Laser Applications
- Geophysics and Gravity Measurements
- Isotope Analysis in Ecology
- Optical Polarization and Ellipsometry
- Space Exploration and Technology
Instituto de Astrofísica de Andalucía
2002-2020
Consejo Superior de Investigaciones Científicas
2006-2016
Critical measurements for understanding accretion and the dust/gas ratio in solar nebula, where planets were forming 4.5 billion years ago, are being obtained by GIADA (Grain Impact Analyser Dust Accumulator) experiment on European Space Agency's Rosetta spacecraft orbiting comet 67P/Churyumov-Gerasimenko. Between 3.6 3.4 astronomical units inbound, OSIRIS (Optical, Spectroscopic, Infrared Remote Imaging System) detected 35 outflowing grains of mass 10(-10) to 10(-7) kilograms, 48 10(-5)...
ABSTRACT The Rosetta probe, orbiting Jupiter-family comet 67P/Churyumov–Gerasimenko, has been detecting individual dust particles of mass larger than 10 −10 kg by means the GIADA collector and OSIRIS Wide Angle Camera Narrow since 2014 August will continue until 2016 September. Detections single allow us to estimate anisotropic flux from 67P, infer loss rate size distribution at surface sunlit nucleus, see whether 67P evolves in time. velocity orbiter, relative is much lower measured GIADA,...
The Imaging Magnetograph eXperiment (IMaX) is a spectropolarimeter built by four institutions in Spain that flew on board the Sunrise balloon-borne telesocope June 2009 for almost six days over Arctic Circle. As polarimeter IMaX uses fast polarization modulation (based use of two liquid crystal retarders), real-time image accumulation, and dual beam polarimetry to reach sensitivities 0.1%. spectrograph, instrument LiNbO3 etalon double pass narrow band pre-filter achieve spectral resolution...
The Grain Impact Analyzer and Dust Accumulator (GIADA) instrument on board ESA's Rosetta mission is constraining the origin of dust particles detected within coma comet 67 P/Churyumov–Gerasimenko (67P). collected belong to two families: (i) compact (ranging in size from 0.03 1 mm), witnessing presence materials that underwent processing solar nebula (ii) fluffy aggregates 0.2 2.5 mm) sub-micron grains may be a record primitive component, probably linked interstellar dust. dynamics constrain...
Context. During the period between 15 September 2014 and 4 February 2015, Rosetta spacecraft accomplished circular orbit phase around nucleus of comet 67P/Churyumov-Gerasimenko (67P). The Grain Impact Analyzer Dust Accumulator (GIADA) onboard monitored 67P coma dust environment for entire period.
NOMAD is a spectrometer suite on board ESA's ExoMars trace gas orbiter due for launch in January 2016. consists of two infrared channels and one ultraviolet visible channel allowing the instrument to perform observations quasi-constantly, by taking nadir measurements at dayside nightside, during solar occultations. In this paper, design, manufacturing, testing are described. We focus upon optical working principle these channels, where an echelle grating, used as diffractive element,...
GIADA (Grain Impact Analyzer and Dust Accumulator) on-board the Rosetta space probe is designed to measure momentum, mass speed of individual dust particles escaping nucleus comet 67P/Churyumov–Gerasimenko (hereafter 67P). From 2014 August 2016 June, escorted 67P during its journey around Sun. Here, we focus on data taken between 2015 January February which included 67P's perihelion passage. To better understand cometary activity more specifically presence structures in comae, mapped spatial...
NOMAD is a spectrometer suite on board the ESA/Roscosmos ExoMars Trace Gas Orbiter, which launched in March 2016. consists of two infrared channels and one ultraviolet visible channel, allowing instrument to perform observations quasi-constantly, by taking nadir measurements at day- night-side, during solar occultations. Here, part 2 linked study, we describe design, manufacturing, testing channel called UVIS. We focus upon optical design working principle where telescopes are coupled single...
Some of the secrets atmosphere Titan have been unveiled by Huygens Probe. The Permitivity Wave and Altimetry system detected a hidden ionosphere much below main ionosphere, that lies between 600 2000 km. Theoretical models predicted low altitude produced cosmic rays that, contrary to magnetospheric particles UV photons, are able penetrate down in atmosphere. Two sensors: Mutual Impedance (MI) Relaxation Probe (RP) measured conductivity two different methods were discriminate branches...
GIADA (Grain Impact Analyser and Dust Accumulator) on-board the Rosetta mission to comet 67P/Churyumov-Gerasimenko was designed study physical dynamical properties of dust particles ejected by during encounter. In this paper we report results analysis data collected past seven years cruise phase. During period detection subsystems were switched on for periodic in-flight payload checkouts monitor their state-of-health including potential changes in its performance that could affect...
The SUNRISE balloon project is a high-resolution mission to study solar magnetic fields able resolve the critical scale of 100 km in photosphere, or about one photon mean free path. Imaging Magnetograph eXperiment (IMaX) three instruments that will fly and receive light from 1m aperture telescope mission. IMaX should take advantage 15 days uninterrupted observations exceptional resolution help clarifying our understanding small-scale concentrations pervade surface. For this, act as...
In this work, it is described the Imaging Magnetograph eXperiment, IMaX, one of three postfocal instruments Sunrise mission. The project consists on a stratospheric balloon with 1 m aperture telescope, which will fly from Antarctica within NASA Long Duration Balloon Program. IMaX provide vector magnetograms solar surface spatial resolution 70 m. This data relevant for understanding how magnetic fields emerge in surface, they couple photospheric base million degrees temperature corona and are...