CM2 - Cosmic Backgrounds from radio to far-IR |
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Speaker |
QADIR, Asghar |
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Coauthors |
Noraiz Tahir |
| Talk Title |
Virial Clouds as a Model for Doppler Asymmetry in the Cosmic Microwave Background Radiation |
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Abstract |
In 1995 it had been proposed that there may be molecular hydrogen clouds in the halos of galaxies, held up by the virial temperature balancing the incoming CMBR, and that they could be seen by an asymmetric distortion of the CMBR due to a Doppler shift caused by the galactic rotation. The accuracy at the time was inadequate to see this but it was seen in 2011 by WMAP and then by Planck, looking at the CMBR through the Andromeda galaxy, M-31. It was then seen in a number of other galaxies. The question now arises whether the effect is due to the originally proposed molecular hydrogen clouds or due to other interstellar matter. As a first step to answering this question, we model the pure hydrogen cloud, a pure dust cloud and a mixture of the two, to see how what could now be said about cause of the distortion. |
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