Cosmic ray contribution in the WMAP of the cosmic microwave background
Abstract
We have updated our analysis of some nine years ago in which we drew attention to the presence of a finite `cosmic ray foreground' to the then available map of the cosmic microwave background (CMB). The analysis has been repeated with the most recent nine-year data. We argue that the foreground has been reduced but not to zero. Specifically, there are still features which relate to Galactic phenomena, in particular, the presence of a cosmic ray/CMB intensity correlation in Hydrogen gas `chimneys' and symmetries with respect to the Galactic plane. However, the region of space examined by the BICEP2 group show no significant correlations.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- March 2015
- DOI:
- 10.1093/mnras/stv039
- arXiv:
- arXiv:1507.06773
- Bibcode:
- 2015MNRAS.448.1030W
- Keywords:
-
- cosmic rays;
- cosmic background radiation;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- doi:10.1093/mnras/stv039