The Morphology of the Anomalous Microwave Emission in the Planck 2015 data release

TL;DR

This study analyzes the spatial relationships between anomalous microwave emission and other interstellar emissions using Planck 2015 data, revealing correlations and anti-correlations that inform the understanding of dust particle behavior in the ISM.

Contribution

It introduces a weighted mosaic correlation method to analyze Planck 2015 foreground maps, providing new insights into the spatial relationships of AME with other emissions.

Findings

Positive correlation between AME and thermal dust emission.

Correlation between AME and synchrotron radiation.

Complex relationship between AME and free-free emission.

Abstract

We calculate weighted mosaic correlations between the recently published Planck 2015 foreground maps - both anomalous microwave emission (AME) maps, free-free emission, synchrotron radiation and thermal dust emission. The weighting coefficients are constructed taking account of the signal-to-error ratio given by the data product. Positive correlation is found for AME compared with thermal dust emission as well as synchrotron radiation. We find AME and free-free emission tending to be anti-correlated, however, when investigating different scales, their relationship appears to be more complex. We argue that dust particles responsible for AME are pushed out of hot zones in the interstellar medium (ISM).