Speaker
Description
The cosmic radio dipole is an anisotropy in the number counts of radio sources, analogous to the dipole seen in the cosmic microwave background (CMB). Measurements of the radio dipole with large radio surveys have shown that though the radio dipole is aligned in direction with the CMB dipole, the amplitudes are in tension. These observations present an intriguing puzzle as to the cause of this discrepancy, with a true anisotropy having large repercussions for cosmology as a whole. I discuss recent measurements of the dipole, and what these measurements might tell us about the dipole. I will also discuss the technique of combining different catalogues for dipole measurements, which can aid in breaking degeneracies which are present for single catalogues. I will discuss the combination of catalogues at different frequencies, survey depths, and sky coverages, and how these measurements can help uncover the origin of the anomalous dipole excess.
| What is your career stage? | Non-tenured scientist (post PhD) |
|---|---|
| Which telescopes do you use / are you affiliated with? | MeerKAT |
