Periodic signatures for the detection of cosmic axions

Details Periodic signatures for the detection of cosmic axions Periodic signatures for the detection of cosmic axions

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990psdc.rept.....t&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Astronomical Models, Dark Matter, Microwaves, Signal Processing, Signature Analysis, Signatures, Earth Rotation, Halos, Periodic Variations, Photons

Scientific paper

In a Sikivie-type cosmic-axion detector, both the width and position of the microwave signal due to axion-photon conversion depend upon the motions of the earth. Due to the orbital and rotational motions of the earth they will be modulated with periods of 1 sidereal day and 1 sidereal year, with amplitudes of about 0.1 percent and 5 percent respectively. Because of the intrinsically-high energy resolution of Sikivie-type detectors such periodic variations should be detectable. Such modulations would not only aid in confirming the detection of cosmic axions, but, if found, would also provide important information about the distribution of axions in the halo.

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