Toward inertial reference frames with the SIM observatory
- Creators
- Makarov, Valeri V.
Abstract
The SIM Lite Observatory is expected to provide a global astrometric reference frame surpassing the 1-μas accuracy threshold in some spherical harmonics. A range of time-varying physical distortions of the reference frame will become observable as large-scale perturbations of the proper motion field. I consider the main sources of the apparent and physical motion of reference objects, such as the aberration of light caused by the acceleration of SIM, long gravitational waves and hypothetical rotation of the Universe, and present some estimates of the astrometric sensitivity to these effects. I argue that a global solution and covariance analysis is of crucial importance for the SIM mission to differentiate the inevitable accidental and systematic zonal errors from real physical phenomena.
Additional Information
© 2010 International Astronomical Union. This material is in part based upon work supported by the National Science Foundation under Grant No. 0843236.Attached Files
Published - Makarov2010p11155Ages_Of_Stars.pdf
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Additional details
- Eprint ID
- 19610
- Resolver ID
- CaltechAUTHORS:20100824-080158843
- 0843236
- NSF
- Created
-
2010-08-30Created from EPrint's datestamp field
- Updated
-
2021-11-08Created from EPrint's last_modified field
- Series Name
- IAU Symposium Proceedings Series
- Series Volume or Issue Number
- 261