The inverse redshift-space operator: reconstructing cosmological density and velocity fields
نویسندگان
چکیده
منابع مشابه
The inverse redshift–space operator: reconstructing cosmological density and velocity fields
We present the linear inverse redshift space operator which maps the galaxy density field derived from redshift surveys from redshift space to real space. Expressions are presented for observers in both the CMBR and Local Group rest frames. We show how these results can be generalised to flux–limited galaxy redshift surveys. These results allow the straightforward reconstruction of real space d...
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In the realm of quantum theory a state of a physical system is most generally expressed by its density operator ˆ̺. Knowledge of this operator gives complete information of the quantum state. Schemes have been proposed in a number of fields in quantum physics to determine ˆ̺ from measurements either explicitely [1,2,3,4,5,6,7] or indirectly via quasiprobability distributions [8,9,10,11] for mixed...
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We present a method for reconstructing cosmological density and velocity fields using the Lagrangian Zel’dovich formalism. The method involves finding the least action solution for straight line particle paths in an evolving density field. Our starting point is the final, evolved density , so that we are in effect carrying out the standard Zel’dovich Approximation based process in reverse. Usin...
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We present a new method for recovering the cosmological density, velocity, and potential elds from all-sky redshift catalogues. The method is based on an expansion of the elds in orthogonal radial (Bessel) and angular (spherical harmonic) functions. In this coordinate system, peculiar velocities introduce a coupling of the radial harmonics describing the density eld in redshift space but leave ...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1999
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.1999.02535.x