Journal article

Fingerprints of Galactic Loop I on the Cosmic Microwave Background

Abstract:: We investigate possible imprints of galactic foreground structures such as the "radio loops" in the derived maps of the cosmic microwave background. Surprisingly there is evidence for these not only at radio frequencies through their synchrotron radiation, but also at microwave frequencies where emission by dust dominates. This suggests the mechanism is magnetic dipole radiation from dust grains enriched by metallic iron or ferrimagnetic materials. This new foreground we have identified is present at high galactic latitudes, and potentially dominates over the expected $B$-mode polarization signal due to primordial gravitational waves from inflation.

Publication status:: Published

Peer review status:: Peer reviewed

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APA Style

Liu, H., Mertsch, P., & Sarkar, S. (2014). Fingerprints of Galactic Loop I on the Cosmic Microwave Background. Astrophysical Journal Letters, 789(2), L29–L29.

MLA Style

Liu, H., et al. “Fingerprints of Galactic Loop I on the Cosmic Microwave Background.” Astrophysical Journal Letters, vol. 789, no. 2, 2014, pp. L29–L29.

Chicago Style

Liu, H, P Mertsch, and S Sarkar. 2014. “Fingerprints of Galactic Loop I on the Cosmic Microwave Background.” Astrophysical Journal Letters 789 (2): L29–L29.
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Files:: 1404.1899v3.pdf

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Publisher copy:: 10.1088/2041-8205/789/2/L29

Authors

+ Liu, H More by this author

Role:: Author

+ Mertsch, P More by this author

Role:: Author

+ Sarkar, S More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Theoretical Physics
Role:: Author

Journal:: Astrophysical Journal Letters More from this journal
Volume:: 789
Issue:: 2
Pages:: L29-L29
Publication date:: 2014-01-01
DOI:: 10.1088/2041-8205/789/2/L29
EISSN:: 2041-8213
ISSN:: 2041-8205

Keywords:: astro-ph.GA

astro-ph.CO
Pubs id:: pubs:459636
UUID:: uuid:bb72d876-102b-43d7-930e-5251903d13eb
Local pid:: pubs:459636
Source identifiers:: 459636
Deposit date:: 2014-05-18

Terms of use

Copyright holder:: IOP Publishing
Copyright date:: 2014

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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