THE RELIKT-1 EXPERIMENT - NEW RESULTS

We present new results from reduction of data from the space experiment Relikt-I (investigation of the anisotropy of the cosmic microwave background at 37 GHz). With 99 per cent confidence, an anomalous signal is detected in a region of area of about 1 sr, centred at RA= 1h30m, Dec.= - 10-degrees (l= 150-degrees, b= - 70-degrees). The brightness temperature of the signal is DELTA-T= - 71 +/- 43-mu-K with 90 per cent confidence, including systematic errors. The nature of the signal cannot be explained by effects of the apparatus or by radio emission of known sources; there are reasons to believe that the signal has a cosmological origin. For a model of cosmological signal with scale-invariant spectrum, i.e. in terms of a power-law spectrum with n = 1, we estimate, for the rms, a quadrupole component of 6 X 10(-6) < DELTA T2/T< 3.3 X 10(-5) with 90 per cent confidence, including systematic errors.