# Cosmic radio dipole: Estimators and frequency dependence

@article{Siewert2020CosmicRD, title={Cosmic radio dipole: Estimators and frequency dependence}, author={T. M. Siewert and Matthias Schmidt-Rubart and Dominik J. Schwarz}, journal={Astronomy \& Astrophysics}, year={2020} }

The origin and contributions to the Cosmic Radio Dipole are of great interest in cosmology. Recent studies revealed open questions about the nature of the observed Cosmic Radio Dipole. We use simulated source count maps to test a linear and a quadratic Cosmic Radio Dipole estimator for possible biases in the estimated dipole directions and contributions from the masking procedure. We find a superiority of the quadratic estimator, which is then used to analyse the TGSS-ADR1, WENSS, SUMSS, and…

## Figures and Tables from this paper

## 9 Citations

A new test of the Cosmological Principle: measuring our peculiar velocity and the large scale anisotropy independently

- 2021

We present a novel approach to disentangle two key contributions to the largest-scale anisotropy of the galaxy distribution: (i) the intrinsic dipole due to clustering and anisotropic geometry, and…

A new way to test the Cosmological Principle: measuring our peculiar velocity and the large-scale anisotropy independently

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2021

We present a novel approach to disentangle two key contributions to the largest-scale anisotropy of the galaxy distribution: (i) the intrinsic dipole due to clustering and anisotropic geometry, and…

The Kaiser-Rocket effect: three decades and counting

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2021

The peculiar motion of the observer, if not accurately accounted for, is bound to induce a well-defined clustering signal in the distribution of galaxies. This signal is related to the Kaiser rocket…

First Constraints on the Intrinsic CMB Dipole and Our Velocity with Doppler and Aberration.

- Medicine, PhysicsPhysical review letters
- 2021

We test the usual hypothesis that the cosmic microwave background (CMB) dipole, its largest anisotropy, is due to our peculiar velocity with respect to the Hubble flow by measuring independently the…

Living on the Fermi Edge: On Baryon Transport and Fermi Condensation

- Physics
- 2021

The transfer function of the baryon power spectrum from redshift z ≈ 1100 to today has recently been, for the first time, determined from data by Pardo and Spergel. We observe a remarkable…

A tomographic test of cosmic anisotropy with the recently-released quasar sample

- The European Physical Journal C
- 2021

<jats:p>We test the cosmic anisotropy in the dipole-modulated <jats:inline-formula><jats:alternatives><jats:tex-math>$$\Lambda $$</jats:tex-math><mml:math…

A critique of holographic dark energy

- PhysicsClassical and Quantum Gravity
- 2021

Observations restrict the parameter space of holographic dark energy (HDE) so that a turning point in the Hubble parameter H(z) is inevitable. Concretely, cosmic microwave background, baryon acoustic…

Explaining excess dipole in NVSS data using superhorizon perturbation

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2021

Many observations in recent times have shown evidence against the standard assumption of isotropy in the Big Bang model. Introducing a superhorizon scalar metric perturbation has been able to explain…

Is there really a Hubble tension?

- PhysicsClassical and Quantum Gravity
- 2021

The heliocentric redshifts (z hel) reported for 150 type Ia supernovae in the Pantheon compilation are significantly discrepant from their corresponding values in the JLA compilation. Both catalogues…

## References

SHOWING 1-10 OF 11 REFERENCES

Large disparity in cosmic reference frames determined from the sky distributions of radio sources and the microwave background radiation

- PhysicsPhysical Review D
- 2019

The angular distribution of the Cosmic Microwave Background Radiation (CMBR) in sky shows a dipole asymmetry, ascribed to the observer's motion (peculiar velocity of the solar system!), relative to…

Planck 2018 results. I. Overview and the cosmological legacy of Planck

- Physics
- 2018

The European Space Agency's Planck satellite, which was dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave and submillimetre…

Statistical analysis of spherical

- 1987

Measurements of the Cosmic Radio Dipole in terms of the WENSS from the literature

- GH: Gibelyou & Huterer
- 2011

Airborne Instrumentation for Astronomy V

- 2012

The Dark Energy Survey Collaboration

- Research in Astronomy and Astrophysics
- 2005

Airborne Instrumentation for Astronomy IV

- VizieR Online Data Catalog,
- 2000