Standard relativistic reference systems and the IAU framework

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Beyond the standard IAU framework

We discuss three conceivable scenarios of extension and/or modification of the IAU relativistic resolutions on time scales and spatial coordinates beyond the Standard IAU Framework. These scenarios include: (1) the formalism of the monopole and dipole moment transformations of the metric tensor replacing the scale transformations of time and space coordinates; (2) implementing the parameterized...

متن کامل

On Relativistic Material Reference Systems

This work closes certain gaps in the literature on material reference systems in general relativity. It is shown that perfect fluids are a special case of DeWitt’s relativistic elastic media and that the velocity–potential formalism for perfect fluids can be interpreted as describing a perfect fluid coupled to a fleet of clocks. A Hamiltonian analysis of the elastic media with clocks is carried...

متن کامل

Coordinate transformations and gauges in the relativistic astronomical reference systems

This paper applies a fully post-Newtonian theory (Damour et al. 1991, 1992, 1993, 1994) to the problem of gauge in relativistic reference systems. Gauge fixing is necessary when the precision of time measurement and application reaches 10−16 or better. We give a general procedure for fixing the gauges of gravitational potentials in both the global and local coordinate systems, and for determini...

متن کامل

A standard-based reference framework for system operations requirements

European series of standards for the aerospace industry, includes system operations requirements as one of 16 types of NFRs for embedded and real-time systems. A number of concepts are provided in the ECSS and Institute of Electrical and Electronics Engineers (IEEE) standards to describe the various types of candidate operations requirements at the system, software and hardware levels. In the a...

متن کامل

A Quality Control Framework for Gold Standard Reference Translations: The Process and Toolkit Developed for GALE

While a multitude of machine translation (MT) evaluation metrics exist, most require one or more gold standard references. For the DARPA GALE program, source data is translated according to detailed guidelines and high quality standards, but these raw translations then undergo a rigorous and carefully constructed quality control (QC) process to create the final references. GALE evaluation trans...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Proceedings of the International Astronomical Union

سال: 2009

ISSN: 1743-9213,1743-9221

DOI: 10.1017/s174392130999007x