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Symposium - International Astronomical Union Symposium - International Astronomical Union

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Cosmic Background Radiation Anisotropies in the Far Infrared

Published online by Cambridge University Press:  08 February 2017

P. de Bernardis ,
M. De Petris ,
M. Epifani ,
M. Gervasi ,
G. Guarini  and
S. Masi
P. de Bernardis
Affiliation:
Dipartimento di Fisica Università di Roma, Italy
M. De Petris
Affiliation:
Dipartimento di Fisica Università di Roma, Italy
M. Epifani
Affiliation:
Dipartimento di Fisica Università di Roma, Italy
M. Gervasi
Affiliation:
Dipartimento di Fisica Università di Roma, Italy
G. Guarini
Affiliation:
Dipartimento di Fisica Università di Roma, Italy
S. Masi
Affiliation:
Dipartimento di Fisica Università di Roma, Italy
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The motion of the earth with respect to the distant matter frame produces a spectral distortion in the observed background radiation given by 1

The second-order approximation in β gives (de Bernardis et al., 1989) 2 where α≅(dlnI/dln v) = (v/I)(dI/dv). The first term in cosθ of equation (2) is the usual dipole anisotropy, the second constant term is the equivalent of the transverse Doppler effect in special relativity, and the third term is the quadrupole anisotropy. It is interesting to note that the quadrupole term is zero in the Rayleigh-Jeans region of the blackbody spectrum: Q ≈ 1/2(3–α)(2–α)β2cos2θ.

Type
IV. Extragalactic Background Radiation and Cosmology
Information
Symposium - International Astronomical Union , Volume 139: The Galactic and Extragalactic Background Radiation , 1990 , pp. 400 - 401
Copyright
Copyright © Kluwer 1990 

References

Bond, J. R., Carr, B. J., and Hogan, C. J. 1986, Ap. J., 306, 428.CrossRefGoogle Scholar
de Bernardis, P., et al. 1989, Ap. J. Letters, submitted.Google Scholar
Epifani, M., Guarini, G., and Melchiorri, F. 1989, Ap. J., submitted.Google Scholar
Fabbri, R., 1988, Ap. J., 324, 6.CrossRefGoogle Scholar
Gush, H. P., 1981, Phys. Rev. Letters, 47, 745.CrossRefGoogle Scholar
Matsumoto, T., et al. 1988, Ap. J., 329, 567.CrossRefGoogle Scholar

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