TY - JOUR
T1 - Hyperbolic universes with a horned topology and the cosmic microwave background anisotropy
AU - Aurich, Ralf
AU - Lustig, Sven
AU - Steiner, Frank
AU - Then, Holger
PY - 2004/11/7
Y1 - 2004/11/7
N2 - We analyse the anisotropy of the cosmic microwave background (CMB) in hyperbolic universes possessing a non-trivial topology with a fundamental cell having an infinitely long horn. The aim of this paperis twofold. On the one hand, we show that the horned topology does not lead to a flat spot in the CMB sky maps in the direction of the horn asstated in the literature. On the other, we demonstrate that a horned topology having a finite volume could explain the suppression of the lower multipoles in the CMB anisotropy as observed by COBE and WMAP.
AB - We analyse the anisotropy of the cosmic microwave background (CMB) in hyperbolic universes possessing a non-trivial topology with a fundamental cell having an infinitely long horn. The aim of this paperis twofold. On the one hand, we show that the horned topology does not lead to a flat spot in the CMB sky maps in the direction of the horn asstated in the literature. On the other, we demonstrate that a horned topology having a finite volume could explain the suppression of the lower multipoles in the CMB anisotropy as observed by COBE and WMAP.
UR - http://adsabs.harvard.edu/abs/2004CQGra..21.4901A
U2 - 10.1088/0264-9381/21/21/010
DO - 10.1088/0264-9381/21/21/010
M3 - Article (Academic Journal)
SN - 0264-9381
VL - 21
SP - 4901
EP - 4925
JO - Classical and Quantum Gravity
JF - Classical and Quantum Gravity
IS - 21
ER -