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Simulation of the clock framework of Gaia
Javier Castaneda, Jose P. Gordo, Jordi Portell +2
Gaia will perform astrometric measurements with an unprecedented resolution. Consequently, the electronics of the Astro instrument must time tag every measurement with a precision…
Optimization of time data codification and transmission schemes: Application to Gaia
Jordi Portell, Enrique Garcia-Berro, Xavier Luri
Gaia is an ambitious space observatory devoted to obtain the largest and most precise astrometric catalogue of astronomical objects from our Galaxy and beyond. On-board processing…
The Payload Data Handling and Telemetry Systems of Gaia
Jordi Portell, Xavier Luri, Enrique Garcia-Berro +1
The Payload Data Handling System (PDHS) of Gaia is a technological challenge, since it will have to process a huge amount of data with limited resources. Its main tasks include the…
Real vs. simulated relativistic jets
J. L. Gomez, J. M. Marti, I. Agudo +3
Intensive VLBI monitoring programs of jets in AGN are showing the existence of intricate emission patterns, such as upstream motions or slow moving and quasi-stationary componentes…
The Turn-off of Classical Novae Observed Through X-rays: Models versus ROSAT Observations of V1974 Cyg
Gloria Sala, Margarita Hernanz
Detection of X-ray emission from classical novae in their post-outburst stages provides crucial information about the nova phenomenon. The soft X-ray emission gives a direct insigh…