Cross Correlation of Cosmic Fields: A Powerful Statistical Tool for Astrophysics, Cosmology, and Fundamental Physics
A special issue of Universe (ISSN 2218-1997). This special issue belongs to the section "Universe Letters".
Deadline for manuscript submissions: closed (20 May 2022) | Viewed by 4154
Special Issue Editors
Interests: galaxy formation; cosmology; gravitational waves; dark matter
Special Issue Information
Dear Colleagues,
Over the past few decades, a wide set of cosmological observations have allowed us to greatly enhance our understanding of the basic properties and evolutionary history of the Universe, firmly establishing the concordance LCDM model. Nevertheless, such a framework has raised some puzzling and still unresolved issues, such as the nature and dynamics of dark matter and dark energy, possible modifications to Einstein’s theory of gravity on large scales, and the existence and characterization of primordial gravitational waves as an ultimate probe of inflation. In these respects, global observational efforts from ground and space are ongoing to: (i) provide a detailed 3D mapping of the large-scale structure of the Universe, as signposted by galaxies, galaxy clusters (e.g., via the Sunyaev–Zeldovich effect), gravitational lenses, 21 cm sources, gravitational waves, multimessenger emissions, and astrophysical backgrounds over the electromagnetic spectrum (e.g., infrared, optical, X rays and gamma); and (ii) attain unprecedented precision measurements of cosmic microwave background (CMB) observables, such as detailed CMB spectral features, CMB lensing, the optical depth for electron scattering (related to cosmic reionization), and especially the curl B-mode polarization signal. The cross-correlation of such datasets has been recently established as a powerful statistical tool to investigate open issues from a new perspective, possibly easing tomographic analysis in redshift slices and relieving the killer impact of diverse systematics. At the forefront of current research, such cross-correlations are being measured with increasing accuracy and will undoubtedly constitute the primary targets of forthcoming cosmological studies.
This Special Issue of Universe solicits papers regarding cross-correlations of cosmic fields, with focus both on their statistical foundations and on their exploitation for science in astrophysics, cosmology, and fundamental physics.
Only short letters and communications (about 5–10 pages) will be considered for publication in this Special Issue.
Dr. Andrea LAPI
Prof. Dr. Carlo BACCIGALUPI
Guest Editors
Manuscript Submission Information
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Keywords
- Cosmology
- Astrophysics
- Astrostatistics
- Fundamental physics
- Cross-correlation
- Cosmic microwave background—CMB
- Large-scale structure of the universe
- Dark matter
- Dark energy
- Modified gravity
- Gravitational waves
- Galaxies
- Galaxy clusters
- 21 cm emission
- Multimessenger sources
- Gravitational lensing
- Cosmic reionization
- CMB lensing
- CMB polarization
- Astrophysical backgrounds
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