Cosmic
Microwave Background Anisotropy| Cosmic
Microwave Background Anisotropy |
In General > s.a. brane
cosmology.
* Anisotropy: The cmb is very
nearly isotropic; 
T/T 
5 
10–6 on scales 
10°,
from the correlation
c():=
(T/T)(n1)
(T/T)(n2)
st
avg = (1/4
)
1 c1 P1(cos)
.
* Peaks: For fixed ,
the "spectrum''
c1 is expected to have peaks, whose
position, height and shape give us information on physical parameters (baryon
density,
Hubble constant, topological defects vs inflation, etc); The position of the
first peak indicates that the universe is spatially flat.
* Preferred directions?
2007, An alignment ("axis of evil") has been reported between the
quadrupole and octopole moments in the WMAP microwave sky survey, but its significance
is still being
debated.
@ Books, reviews: Rowan-Robinson 93; Durrer HPA(96)ap,
ap/01-in; Page ap/97-in, ap/99-in;
Lasenby CQG(02);
Bersanelli et al RNC(02);
White & Cohn AJP(02)RL;
Subramanian CS(05)ap/04;
Martínez & Vielva ap/05-in;
Bouchet et al ap/05-in;
Souradeep ap/06-in
[cosmology].
@ General references: news pn(92)apr;
Lineweaver ap/96-in,
et al ApJ(96) [dipole]; Smoot & Scott ap/96, ap/97;
Bennett et al PT(97)nov;
Kamionkowski & Knox PRD(03)
[dipole]; Wright ap/03-in;
Eriksen et al ApJ(04)ap/03 [asymmetries];
Magueijo & Sorkin ap/06 [Occam's
razor and WMAP data]; Bernui et al PLA(06)
[and non-extensivity]; Inoue a0710 [large-scale
anomalies]; Eisenstein & Bennett PT(08)apr.
@ Theory: Dodelson ap/97-in, IJMPA(00)hp/99-in;
Hu et al PRD(98)
[in FRW models]; Durrer JPS(01)ap;
Trotta ap/04-PhD;
Giovannini IJMPD(05)ap/04 [tools];
Bartolo et al JCAP(06),
JCAP(07),
ap/07-ln
[at second order];
Weinberg PRD(06)ap [no
truncation approach].
@ Analysis: Lessner GRG(04)
[non-acoustic peaks]; Land & Magueijo MNRAS(05)ap/04 [independent
components]; Liu & Li a0806-ApJ [errors in WMAP maps].
Sachs-Wolfe Effect
* Idea:
A contribution from changes in the 
's
4-momentum due to density perturbations; Allows us to correlate features in
the
cmb to large-scale structure.
@ General references: Sachs & Wolfe ApJ(67),
reprinted GRG(07);
Magueijo PRD(93);
Ferrando et al PRD(93);
Russ et al PRD(93);
Pyne & Birkinshaw ap/93 [null
geodesics in perturbed spacetime]; White & Hu A&A(97)ap/96 [pedagogical];
Hwang & Noh PRD(99)ap/98;
Cooray PRD(02)ap/01 [integrated];
Aguiar & Crawford ap/01 [anisotropic
spacetimes]; Multamäki & Elgarøy A&A(04)ap/03 [non-standard
cosmology]; Mendonça et al CQG(08)
[new approach]; Granett et al a0805-ApJL.
@ Integrated, observation: Boughn et al NA(98),
Boughn & Crittenden NAR(05)ap/04-in
[consistent with 
-CDM];
Cooray PRD(02)
[large-scale structure]; Padmanabhan
et al PRD(05)ap/04;
Pietrobon et al PRD(06)ap;
Pogosian NAR(06)ap.
Other Effects and Special Topics > s.a. cosmic
strings; dark
matter [indirect
evidence]; gravitational
constant [variation]; sound.
@ Preferred directions? Land & Magueijo PRL(05)ap, PRD(05)
[odd parity?]; Consoli et al ap/06 [vs
Great Attractor]; Helling et al PRD(06)ap;
Ghosh et al PRD(07)ap/06 [hidden
patterns and Bianchi VIIh]; Basak
et al PRD(06);
Souradeep et al NAR(06)ap [not
much evidence]; Abramo et al PRD(06);
Land & Magueijo ap/06/MNRAS;
Ackerman et al PRD(07)ap;
Rakic & Schwarz PRD(07)ap [preferred
plane rather than axis]; Pullen & Kamionkowski PRD(07)-a0709;
Campanelli
et al PRD(07);
Ho
et al a0801-PRD,
Hirata et al a0801-PRD
[and
large-scale structure]; > s.a. galaxy
distribution.
@ Non-Gaussianities: Kung PRD(93)
[and Sachs-Wolfe effect]; Creminelli et al JCAP(06)
[bounds from WMAP]; Bernui et al EPL(07)ap [and
non-extensive statistical mechanics]; Jeong & Smoot a0710 [WMAP3
data]; McEwen et al a0803-MNRAS
[WMAP5 data]; Martínez-González a0805-in.
@ And quantum gravity: Hamada et al PRD(06)ap,
a0705 [quantum
conformal gravity]; Queisser et al CQG(07);
Powell & Kinney PRD(07)
[primordial power spectrum]; Groeneboom & Elgarøy a0711;
> s.a. cmb, quantum
gravity
phenomenology.
@ Other topics: Sakellariadou HPA(96)ap [and
inflation vs topological defects]; Saito
et
al a0705-JCAP
[primordial
gravitational waves]; Corasaniti & Melchiorri a0711 [acoustic
waves]; Fosalba & Doré PRD(07)
[correlation with peculiar velocities]; Cruz et al a0804-MNRAS [cold spot].
@ The galactic foreground issue: Land & Slosar PRD(07)-a0706 [(no)
correlation with galactic
HI]; news pw(07)nov
[Verschuur's claim]; Dobler et al a0712.
@ Different interpretations:
Cover ap/06 [image
reconstruction].
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29 jun 2008