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We compare the large-scale cosmic background anisotropy detected by the COBE Differential Microwave Radiometer (DMR) instrument to the sensitive previous measurements on various angular scales, and to the predictions of a wide variety of models of structure formation driven by gravitational instability. The observed anisotropy is consistent with all previously measured upper limits and with a number of dynamical models of structure formation. For example, the data agree with an unbiased cold dark matter (CDM) model with H₀_ = 50 km s^-1^ Mpc^-1^ and DELTAM/M = 1 in a 16 Mpc radius sphere. Other models, such as CDM plus massive neutrinos hot dark matter (HDM), or CDM with a nonzero cosmological constant are also consistent with the COBE detection and can provide the extra power seen on 5-10, 000 km s^-1^ scales.
Wright et al. (Tue,) studied this question.