Interpretation of the cosmic microwave background radiation anisotropy detected by the COBE Differential Microwave Radiometer

Wright, E. L.; Meyer, S. S.; Bennett, C. L.; Boggess, N. W.; Cheng, E. S.; Hauser, M. G.; Kogut, A.; Lineweaver, C.; Mather, J. C.; Smoot, G. F.

The large-scale cosmic background anisotropy detected by the COBE Differential Microwave Radiometer (DMR) instrument is compared 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 Mpc and Delta-M/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 scales.

Document ID

19920069711

Document Type

Reprint (Version printed in journal)

External Source(s)

doi:10.1086/186506

Authors

Wright, E. L. (California, University Los Angeles, United States)

Meyer, S. S. (MIT Cambridge, MA, United States)

Bennett, C. L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)

Boggess, N. W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)

Cheng, E. S. (NASA Goddard Space Flight Center Greenbelt, MD, United States)

Hauser, M. G. (NASA Goddard Space Flight Center Greenbelt, MD, United States)

Kogut, A. (Universities Space Research Association; NASA, Goddard Space Flight Center Greenbelt, MD, United States)

Lineweaver, C. (Lawrence Berkeley Laboratory; California, University Berkeley, United States)

Mather, J. C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)

Smoot, G. F. (Lawrence Berkeley Laboratory; California, University Berkeley, United States)

Date Acquired

August 15, 2013

Publication Date

September 1, 1992

Publication Information

Publication: Astrophysical Journal, Part 2 - Letters

Volume: 396

Issue: 1, Se

ISSN: 0004-637X

Subject Category

Distribution Limits

Public

Other

NTRS

NTRS - NASA Technical Reports Server