Long-wavelength gravitational waves and the fine-scale anisotropy of the cosmic microwave background

Details Long-wavelength gravitational waves and the fine-scale anisotropy of the cosmic microwave background Long-wavelength gravitational waves and the fine-scale anisotropy of the cosmic microwave background

Aug 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978mnras.184..319a&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 184, Aug. 1978, p. 319-326. Research supported by the Consiglio Naziona

Astronomy and Astrophysics

Astrophysics

10

Anisotropic Media, Background Radiation, Cosmology, Gravitational Waves, Microwave Emission, Black Body Radiation, Galactic Radiation, Microwave Scattering, Missing Mass (Astrophysics), Relativity, Wavelengths

Scientific paper

Dautcourt's (1969) analysis of the temperature fluctuations induced in the microwave background by long-wavelength gravitational waves is extended by treating both negative and positive curvatures and by considering a perturbed matter- and radiation-filled Robertson-Walker universe in the extreme case where the pregalactic matter is fully ionized. A lower limit to the temperature fluctuations at the last-scattering surface is evaluated, and an upper limit to the present energy density in gravitational waves with wavelengths of 3 to 10 Mpc is obtained by comparison with the observed upper limit to the temperature fluctuations of 0.000715 over small angular scales (about 2 deg). The results obtained show that the 'missing mass' in clusters of galaxies cannot be in the form of megaparsec-length gravitational waves, that a single wave induces a quadrupole angular dependence in the temperature variation of the blackbody radiation, and that the energy density in a gravitational wave with a wavelength of about 10 Mpc is probably less than 0.005 of the critical energy density.

Affiliated with

Also associated with

No associations

Rating

Long-wavelength gravitational waves and the fine-scale anisotropy of the cosmic microwave background does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Long-wavelength gravitational waves and the fine-scale anisotropy of the cosmic microwave background, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long-wavelength gravitational waves and the fine-scale anisotropy of the cosmic microwave background will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-945427