Termination shock thermal processes as a possible source for the CMB low-order multipole anomalies

Details Termination shock thermal processes as a possible source for the CMB low-order multipole anomalies Termination shock thermal processes as a possible source for the CMB low-order multipole anomalies

2009-06-09

arxiv.org/abs/0906.1752v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages. Comments Welcomed!

Scientific paper

We discuss the possibility that the observed low-order multipole features of the cosmic microwave background radiation (CMB) all originate in the termination shock (TS) region of the heliosheath that surrounds the solar system. If the intrinsic CMB spectrum is assumed to be a pure monopole (2.73K) then thermodynamic processes occurring within the plasma region of the TS could imprint the observed power spectrum of the low-order multipoles and their alignment (the so-called "axis of evil") onto this background isotropic CMB. Conditions are outlined for the geometric shape of the TS region. A key requirement of this model is that the TS plasma be characterized as an optically thin graybody with non-LTE perturbations. Data from the ongoing Voyager missions is critical to this study.

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