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| Keywords: Cmbr.svg jansky per steradian where a jansky is 10<sup>-26</sup> Watts per square-meter per Hertz The horizontal axis 1/cm corresponds to the reciprocal of the microwave wavelength in cm which is proportional to the microwave frequency The error bars are too small to be displayed by a computer screen but were included to demonstrate the impressive accuracy of the data Made with GNUPlot <br /> NASA's comment on the original picture Cosmic Microwave Background CMB spectrum plotted in waves per centimeter vs intensity The solid curve shows the expected intensity from a single temperature blackbody spectrum as predicted by the hot Big Bang theory A blackbody is a hypothetical body that absorbs all electromagnetic radiation falling on it and reflects none whatsoever The FIRAS data were taken at 34 positions equally spaced along this curve The FIRAS data match the curve so exactly with error uncertainties less than the width of the blackbody curve that it is impossible to distinguish the data from the theoretical curve These precise CMB measurements show that 99 97 of the radiant energy of the Universe was released within the first year after the Big Bang itself All theories that attempt to explain the origin of large scale structure seen in the Universe today must now conform to the constraints imposed by these measurements The results show that the radiation matches the predictions of the hot Big Bang theory to an extraordinary degree See Mather et al 1994 Astrophysical Journal 420 439 Measurement of the Cosmic Microwave Background Spectrum by the COBE FIRAS Instrument Wright et al 1994 Astrophysical Journal 420 450 Interpretation of the COBE FIRAS CMBR Spectrum and Fixsen et al 1996 Astrophysical Journal 473 576 The Cosmic Microwave Background Spectrum from the Full COBE FIRAS Data Sets for details de Das Monopolspektrum der kosmischen Hintergrundstrahlung Es wurden die Originaldaten des FIRAS Teams zugrundegelegt zu finden hier http //lambda gsfc nasa gov/product/cobe/firas_monopole_get cfm Die Fehlerbalken sind zu klein um von einem Bildschirm dargestellt werden zu können wurden aber dennoch wegen der beeindruckenden Genauigkeit der Daten abgebildet Erstellt mit GNUPlot own Quantum Doughnut 2011-02-04 Other versions File Firas_spectrum jpg File Cmbr-ar svg Other fields + 2 Diagrams Cosmic microwave background COBE results Black body spectra | ||||
