Search Publications
Propagation of cosmic rays in heliosphere: The HELMOD model
Gervasi, M.; Rancoita, P. G.; Boschini, M. J. +2 more
The heliospheric modulation model HELMOD is a two dimensional treatment dealing with the helio-colatitude and radial distance from Sun and is employed to solve the transport-equation for the GCR propagation through the heliosphere down to Earth. This work presents the current version 3 of the HELMOD model and reviews how main processes involved in…
Geoeffectiveness of interplanetary shocks controlled by impact angles: A review
Samsonov, A. A.; Oliveira, D. M.
The high variability of the Sun's magnetic field is responsible for the generation of perturbations that propagate throughout the heliosphere. Such disturbances often drive interplanetary shocks in front of their leading regions. Strong shocks transfer momentum and energy into the solar wind ahead of them which in turn enhance the solar wind inter…
Small Bodies Near and Far (SBNAF): A benchmark study on physical and thermal properties of small bodies in the Solar System
Marton, G.; Müller, T. G.; Alí-Lagoa, V. +15 more
The combination of visible and thermal data from the ground and astrophysics space missions is key to improving the scientific understanding of near-Earth, main-belt, trojans, centaurs, and trans-Neptunian objects. To get full information on a small sample of selected bodies we combine different methods and techniques: lightcurve inversion, stella…
DePhine - The Deimos and Phobos Interior Explorer
Willner, Konrad; Oberst, Jürgen; Pätzold, Martin +15 more
DePhine - Deimos and Phobos Interior Explorer - is a mission proposed in the context of ESA's Cosmic Vision program, for launch in 2030. The mission will explore the origin and the evolution of the two Martian satellites, by focusing on their interior structures and diversity, by addressing the following open questions: Are Phobos and Deimos true …
Science exploration architecture for Phobos and Deimos: The role of Phobos and Deimos in the future exploration of Mars
Head, James W.; Qiao, Le; Pieters, Carle M. +12 more
Phobos and Deimos are the only natural satellites of the terrestrial planets, other than our Moon. Despite decades of revolutionary Mars exploration and plans to send humans to the surface of Mars in the 2030's, there are many strategic knowledge gaps regarding the moons of Mars, specifically regarding the origin and evolution of these bodies. Add…
Exospheric escape: A parametrical study
Killen, Rosemary M.; Burger, Matthew H.; Farrell, William M.
The study of exospheres can help us understand the long-term loss of volatiles from planetary bodies due to interactions of planets, satellites, and small bodies with the interplanetary medium, solar radiation, and internal forces including diffusion and outgassing. Recent evidence for water and OH on the Moon has spurred interest in processes inv…
Geometric calibration of Colour and Stereo Surface Imaging System of ESA's Trace Gas Orbiter
Cremonese, Gabriele; Thomas, Nicolas; Tulyakov, Stepan +5 more
There are many geometric calibration methods for "standard" cameras. These methods, however, cannot be used for the calibration of telescopes with large focal lengths and complex off-axis optics. Moreover, specialized calibration methods for the telescopes are scarce in literature. We describe the calibration method that we developed for the Colou…
Determination of projection effects of CMEs using quadrature observations with the two STEREO spacecraft
Bronarska, K.; Michalek, G.
Since 1995 coronal mass ejections (CMEs) have been routinely observed thanks to the sensitive Large Angle and Spectrometric Coronagraphs (LASCO) on board the Solar and Heliospheric Observatory (SOHO) mission. Their observed characteristics are stored, among other, in the SOHO/LASCO catalog. These parameters are commonly used in scientific studies.…
Solar flares, CMEs and solar energetic particle events during solar cycle 24
Pande, Bimal; Pande, Seema; Chandra, Ramesh +1 more
We present here a study of Solar Energetic Particle Events (SEPs) associated with solar flares during 2010-2014 in solar cycle 24. We have selected the flare events (≥GOES M-class), which produced SEPs. The SEPs are classified into three categories i.e. weak (proton intensity ≤ 1 pfu), minor (1 pfu < proton intensity < 10 pfu) and major (pro…
Properties and relationship between solar eruptive flares and Coronal Mass Ejections during rising phase of Solar Cycles 23 and 24
Moon, Y. -J.; Shanmugaraju, A.; Umapathy, S. +2 more
Statistical relationship between major flares and the associated CMEs during rising phases of Solar Cycles 23 and 24 are studied. Totally more than 6000 and 10,000 CMEs were observed by SOHO/LASCO (Solar and Heliospheric Observatory/Large Angle Spectrometric Coronagraph) during 23rd [May 1996-June 2002] and 24th [December 2008-December 2014] solar…