We analyzed a GOES C6.2 class flare on 27 October 2003 on the heliographic position S20E29. Based on the essential parameters of its microwave emission, we inferred a set of geometric and physical parameters to characterize a solar flare using a developed database of a simplified model of a 3D geometry of a magnetic loop. …
C6.2 class flare parameters inferred with a 3D geometry of flare database Read More »
The conventional International Terrestrial Reference Frame (ITRF) is based on the combination of solutions from several space geodetic techniques, including observations until the end of 2020, and incorporates updated data and models. In contrast, the Celestial Reference Frame (CRF) is a VLBI-only solution based on data until 2015. These differing approaches could potentially lead to …
General description of RAEGE network, the stations and its activities taking a closer look to the RAEGE Station of Santa Maria, an island in the North-Atlantic Ocean. João S. Ferreira[1] Type Presentation Event GGOS Affiliate Japan Annual Meeting 2023 [1] Estação RAEGE de Santa Maria, Associação RAEGE Açores, Santa Maria – Azores, Portugal Voltar à página …
Santa Maria station: a GGOS station in Azores and the RAEGE Network Read More »
The Global Geodetic Observing System (GGOS) of the International Association of Geodesy (IAG) envisages stringent accuracy goals for the International Terrestrial Reference Frame (ITRF) realization in terms of position (1 mm) and velocity (0.1 mm/year). These requirements entail that the Earth Orientation Parameters (EOP) should be estimated with similar accuracy. The ITRF is based on …
A Solar Energetic Particle (SEP) was detected by the Electron Proton and Alpha Monitor (EPAM) onboard of the Advanced Composition Explorer (ACE) spacecraft on 2013 May 22 both in the electrons and ion channels. In the electrons channels, it is a prompt fast rising highly isotropic event. There is an evidence in the ion channels …
High energy ions associated with the SEP event on May 22, 2013 Read More »
RAEGE (Atlantic Network of Geodynamic and Space Stations) is a project resulting from the cooperation between the National Geographic Institute of Spain (IGN) and the Government of Azores. It is a unique project at a geodetic and geodynamic level, in which it is committed to the combination of geodetic techniques in four stations – two …
RAEGE Project: Status, Analysis Endeavors, and Future Prospects Read More »
A Associação RAEGE Açores (RAEGE-Az), enquanto entidade que implementa um projeto de geodesia espacial nos Açores – o projeto RAEGE (Rede Atlântica de Estações Geodinâmicas e Espaciais) – assumiu como parte da sua missão a divulgação de ciência e tecnologia, com foco nas áreas que são trabalhadas a partir de Santa Maria, tais como a …
A Associação RAEGE Açores (RAEGE-Az), enquanto entidade que implementa um projeto de geodesia espacial nos Açores – o projeto RAEGE (Rede Atlântica de Estações Geodinâmicas e Espaciais) – assumiu como parte da sua missão a divulgação de ciência e tecnologia, com foco nas áreas que são trabalhadas a partir de Santa Maria, tais como a …
RAEGE Santa Maria Station report of activities of 2020 and 2021. João S. Ferreira[1] Type Report Event 2nd EU-VGOS Workshop [1] Estação RAEGE de Santa Maria, Associação RAEGE Açores, Santa Maria – Azores, Portugal Voltar à página publicações
When complete, the Red Atlántica de Estaciones Geodinámicas y Espaciales (RAEGE) will be composed of four VGOS radio-telescopes, two in Spain (Yebes and Gran Canaria) and two in Portugal (Santa María and Flores islands). The Yebes VGOS radio-telescope is fully operational and integrated in the VGOS core network. The Santa María VGOS radio-telescope is undergoing …
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