Cosmic-String Phenomenology| Cosmic-String Phenomenology |
Structure Formation, Comic-Microwave-Background Anisotropies
* Galaxy formation: Loops can act as seeds
for galaxies or clusters (depending on size); Fitting observations indicates Gμ
= 10−6; Correlations are ok initially, but may not
survive loop fragmentation; 2004, Cosmic strings are ruled out as the primary source of
perturbations, since cosmic microwave background anisotropies significantly differ from
the anisotropies predicted as the result of topological defects.
@ General references: Shlaer et al JCAP(12)-a1202;
Duplessis & Brandenberger JCAP(13)-a1302 [distribution of dark matter halos].
@ And cmb perturbations: Brandenberger ap/96;
Pen ap/98-proc [problem with cmb];
Riazuelo et al PRD(00)ap/99;
Sakellariadou ap/99-proc;
Durrer ap/00;
Gangui et al NAR(02)ap/01;
Jeong & Smoot ApJ(05)ap/04 [WMAP, search];
Perivolaropoulos NPPS(05)ap [rev];
Jeong & Smoot ApJL(07)ap/06 [technique];
Amsel et al JCAP(08)-a0709;
Bevis et al PRL(08);
news pw(08)jan;
Pogosian et al JCAP(09)-a0804;
Hindmarsh et al PRD(09)-a0908 [temperature bispectrum];
Jeong et al JCAP(10)-a1004;
Ringeval AiA(10)-a1005 [and cmb non-Gaussianities];
Bevis et al PRD(10);
Dvorkin et al PRD(11)-a1109 [constraints from WMAP and the South Pole Telescope];
Anthonisen et al JCAP(16)-a1509 [distortions from cosmic string loops];
Charnock et al PRD(16)-a1603 [constraints on ΛCDM and string network parameters];
Hergt et al JCAP(17)-a1608 [in cmb anisotropy maps].
@ And cmb polarization: Sakellariadou PRD(14)-a1403
[implications of the BICEP2 data for the thermal history of the universe].
@ And matter distribution:
Poltis & Stojković PRL(10)
+ news knox(10)oct [evidence in quasar alignment];
Barton et al JCAP(15)-a1502,
Lin et al JCAP(15)-a1508 [as seeds for globular cluster formation];
Anthonisen et al PRD(15)-a1504 [constraints from ultracompact minihalos].
Light Bending / Electromagnetic Waves
> s.a. types of gravitational lensing.
* Observation: 1986, series of
letters to Nature claiming they had been observed; E Turner thought he
saw a double image of a quasar, showing very strong lens effect; B Paczyński
interpreted it as a cosmic string or a huge black hole; Others compared the two images
at other frequencies, and discovered they were not the same object; 2003, the galaxy
image pair CSL-1 was considered to be a good candidate, but it 2005 they were shown
to be different galaxies.
@ Reported evidence: Turner et al Nat(86)may
+ refutation Shaver & Cristiani Nat(86)jun [apparent double quasar image].
@ Lensing surveys: Mack et al PRD(07)ap;
Chernoff & Tye a0709 [microlensing search];
Christiansen et al PRD(08);
Morganson et al MNRAS(10)-a0908;
Thomas et al PRL(09)-a0909 [and galaxy rotation];
Pshirkov & Tuntsov PRD(10)-a0911 [photometry and pulsar timing];
Christiansen et al PRD(11)-a1008.
@ Other effects on electromagnetic waves: Brandenberger et al JCAP(10)-a1006,
McDonough & Brandenberger JCAP(13)-a1109 [wakes, 21-cm signature];
Steer & Vachaspati PRD(11)-a1012 [light emission];
Fernández-Núñez & Bulashenko PLA(16)-a1605 [wave diffraction];
Brandenberger et al a1707 [cosmic string cusps and radio bursts].
Other Effects and General References > s.a. gravitating
matter / astronomical objects [B fields]; phase;
inflation; sources of gravitational waves.
* Effects: They induce transverse
motion in nearby moving objects; Doppler shifts; One of the key signatures of
cosmic strings is their gravitational-wave production.
* Bounds: Any loops still inside our
galaxy are ≤ 30 pc in radius (size of the galaxy at horizon crossing time).
@ General references: Kibble PRP(80);
Turok PRL(85);
Vilenkin PRP(85);
NS(90)oct6, p29;
Brandenberger IJMPA(94) [rev],
Pra(98)hp-ln;
Berezinsky et al PRD(98)ap;
Pogosian JCAP(04)ap [Bayesian analysis];
Brandenberger a1401-Univ [rev];
news cosmos(18)apr [overview].
@ Observational signatures: Brandenberger NPPS(13)-a1301 [in cmb polarization and 21-cm maps];
LIGO & Virgo PRD(18)-a1712 [constraints from LIGO].
@ SUSY GUTs and cosmology: Jeannerot et al PRD(03)hp;
Rocher & Sakellariadou hp/04/PRL,
JCAP(05)hp/04.
@ And black holes: Page PRD(98)gq [capture by a Kerr-Newman black hole];
Ashoorioon & Mann CQG(14)-a1402
+ CQG+ [with black holes as beads];
Stuchlík & Kološ PRD(14)-a1403
[microquasars and string loops oscillating in the field of Kerr black holes];
Bramberger et al JCAP(15)-a1503 [as seeds for supermassive black holes];
Brandenberger et al a2103 [intermediate-mass black holes];
> s.a. primordial black holes.
@ Effects on gravitational and other waves: Fernández-Núñez
& Bulashenko PLA(16)-a1605
+ news at(16)may [diffraction];
Ellis & Lewicki PRL(21)-a2009,
Blasi et al PRL(21)-a2009 [NANOGrav];
Abbott et al a2101 [constraints from LIGO-Virgo data].
@ Related topics:
Mazur PRL(86) [Aharonov-Bohm effect];
Firouzjahi et al PRD(09)-a0907 [effects of collisions];
Berezinsky PRD(11)-a1108,
Lunardini & Sabancilar PRD(12)-a1206 [production of extremely-high-energy neutrinos].
> Related topics: see black-hole phenomenology,
formation and solutions; chaotic
motion; light [propagation in curved spacetimes]; scattering;
topological defects; types of metrics.
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