Work

A conjugate gradient algorithm for the astrometric core solution ofGaia

Year: 2011

Type: article

Abstract: Context. The ESA space astrometry mission Gaia, planned to be launched in 2013, has been designed to make angular measurements on a global scale with micro-arcsecond accuracy. A key component of the data processing for Gaia is the astrometric core solution, which must implement an efficient and accurate numerical algorithm to solve the resulting, extremely large least-squares problem. The Astrometric Global Iterative Solution (AGIS) is a framework that allows to implement a range of different iterative solution schemes suitable for a scanning astrometric satellite.

Source: Astronomy and Astrophysics

DOI: 10.1051/0004-6361/201117904

Authors: A. Bombrun, L. Lindegren, D. Hobbs, B. Holl, U. Lammers, U. Bastian

Institutions: Heidelberg University, Lund University, European Space Agency, European Space Astronomy Centre

Language: English

Topic: Stellar, planetary, and galactic studies

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: European Space Agency

OpenAlex ID: W2069938457