Peak statistics on COBE maps

Details Peak statistics on COBE maps Peak statistics on COBE maps

1995-08-30

arxiv.org/abs/astro-ph/9508143v1

Astron.Astrophys.307:703-707,1996

Astronomy and Astrophysics

Astrophysics

Latex file, Astronomy & Astrophysics L-aa style. Hardcopy figures available separately, send requests to fabbri@vaxfi.fi.infn.

Scientific paper

We perform the stastistics of temperature maxima and minima in COBE-DMR 2-year maps. For power-law spectra the surface distribution of peaks implies an amplitude consistent with more conventional analyses of COBE data (for instance, we get $Q_{{\rm rms-PS}}=17\pm 3\ \mu $K for a spectral index $% n=1),$ but not with the measured quadrupole $Q_{{\rm rms}}=6\pm 3\ \mu $K. This provides further support for the existence an infrared cutoff in the cosmic spectrum.

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