Ribbons on the Cosmic Background Radiation Sky: A Powerful Test of a Baryon Symmetric Universe
- NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500 (United States)
- Department of Astronomy and Astrophysics, Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637-1433 (United States)
- Department of Physics, The University of Chicago, Chicago, Illinois 60637-1433 (United States)
If the Universe consists of domains of matter and antimatter, annihilations at domain interfaces leave a distinctive imprint on the cosmic background radiation (CBR) sky. The signature is anisotropies in the form of long, thin ribbons of width {theta}{sub W}{approximately}0.1{sup {circ}} , separated by angle {theta}{sub L}{approx_equal}1{sup {circ}}(L/100h{sup {minus}1} Mpc) (L is the characteristic domain size) and with distortion parameter y{approx}10{sup {minus}6} . Such a pattern could potentially be detected by the high-resolution CBR anisotropy experiments planned for the next decade, and such experiments may finally settle the question of whether or not our Hubble volume is baryon symmetric. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 632660
- Journal Information:
- Physical Review Letters, Vol. 79, Issue 14; Other Information: PBD: Oct 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Minimal cosmic background fluctuations implied by streaming motions
The Stromlo-APM redshift survey. III. Redshift space distortions, omega, and bias