Results 51 to 60 of about 4,263,806 (339)

The density and peculiar velocity fields of nearby galaxies [PDF]

open access: yes, 1995
We review the quantitative science that can be and has been done with redshift and peculiar velocity surveys of galaxies in the nearby universe. After a brief background setting the cosmological context for this work, the first part of this review ...
Aaronson   +643 more
core   +2 more sources

The kinetic SZ tomography with spectroscopic redshift surveys [PDF]

open access: yes, 2010
The kinetic Sunyaev Zel'dovich effect (kSZ) effect is a potentially powerful probe to the missing baryons. However, the kSZ signal is overwhelmed by various contaminations and the cosmological application is hampered by loss of redshift information due ...
Jiawei Shao   +4 more
semanticscholar   +1 more source

JEMS: A Deep Medium-band Imaging Survey in the Hubble Ultra Deep Field with JWST NIRCam and NIRISS

open access: yesThe Astrophysical Journal Supplement Series, 2023
We present JWST Extragalactic Medium-band Survey, the first public medium-band imaging survey carried out using JWST/NIRCam and NIRISS. These observations use ∼2 and ∼4 μ m medium-band filters (NIRCam F182M, F210M, F430M, F460M, F480M; and NIRISS F430M ...
Christina C. Williams   +34 more
doaj   +1 more source

The Inverse Redshift-Space Operator: Reconstructing Cosmological Density and Velocity Fields [PDF]

open access: yes, 1999
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.
Andy Taylor   +32 more
core   +2 more sources

How to falsify the GR+{Lambda}CDM model with galaxy redshift surveys [PDF]

open access: yes, 2010
A wide range of models describing modifications to general relativity have been proposed, but no fundamental parameter set exists to describe them. Similarly, no fundamental theory exists for dark energy to parametrize its potential deviation from a ...
V. Acquaviva, E. Gawiser
semanticscholar   +1 more source

Modelling baryonic feedback for survey cosmology

open access: yesThe Open Journal of Astrophysics, 2019
Observational cosmology in the next decade will rely on probes of the distribution of matter in the redshift range between ...
Elisa Chisari   +12 more
doaj   +1 more source

Selection of ULIRGs in Infrared and Submm Surveys [PDF]

open access: yes, 2010
We examine the selection characteristics of infrared and sub-mm surveys with IRAS, Spitzer, BLAST, Herschel and SCUBA and identify the range of dust temperatures these surveys are sensitive to, for galaxies in the ULIRG luminosity range ...
Blain   +71 more
core   +3 more sources

Tracing the sound horizon scale with photometric redshift surveys [PDF]

open access: yes, 2010
We propose a new method for the extraction cosmological parameters using the baryon acoustic oscillation (BAO) scale as a standard ruler in deep galaxy surveys with photometric determination of redshifts.
E. Sánchez   +9 more
semanticscholar   +1 more source

Performance of the Quasar Spectral Templates for the Dark Energy Spectroscopic Instrument

open access: yesThe Astronomical Journal, 2023
Millions of quasar spectra will be collected by the Dark Energy Spectroscopic Instrument (DESI), leading to a fourfold increase in the number of known quasars.
Allyson Brodzeller   +46 more
doaj   +1 more source

Correcting for Interloper Contamination in the Power Spectrum with Neural Networks

open access: yesThe Astrophysical Journal
Modern slitless spectroscopic surveys such as Euclid and Roman collect vast numbers of galaxy spectra, but their low signal-to-noise ratios often lead to incorrect redshift assignments when relying on a single emission line.
Marina S. Cagliari   +2 more
doaj   +1 more source

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