Existence of traversable wormholes in the spherical stellar systems

被引：44

作者：

Ovgun, A. ^{[1
]}

Halilsoy, M. ^{[1
]}

机构：

[1] Eastern Mediterranean Univ, Dept Phys, Mersin 10, Famagusta, Turkey

来源：

ASTROPHYSICS AND SPACE SCIENCE | 2016年 / 361卷 / 07期

关键词：

Wormholes; Milky Way; Spherical stellar systems; Galaxies; Halos; Dark matter; DARK-MATTER HALOES; GALACTIC ROTATION CURVES; DENSITY; EINASTO; SIMULATIONS; PROFILES; PHYSICS; MODELS; IMPACT;

D O I：

10.1007/s10509-016-2803-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Potentiality of the presence of traversable wormholes in the outer/inner regions of the halos of galaxies, situated on the Navarro-Frenk-White (NFW) density profile and Universal Rotation Curve (URC) dark matter models have been investigated recently (Rahaman et al. in Eur. Phys. J. C 74: 2750, 2014a; Rahaman et al. in Ann. Phys. 350: 561-567, 2014b; Kuhfittig in Eur. Phys. J. C 74: 2818, 2014a; Kuhfittig in Found. Phys. 7: 111-119, 2014b; Kuhfittig in Int. J. Mod. Phys. D 24(03): 1550023, 2015; Rahaman et al. in Astrophys. Space Sci. 361(1): 37, 2016a; Rahaman et al. in Astrophys. Space Sci. 361(3): 90, 2016b). Since this covers our own galaxy also as a possible home for traversable wormholes it prompts us to further the subject by considering alternative density distributions. From this token herein we make use of the Einasto model (Einasto in Tr. Inst. Astrofiz. Alma-Ata 5: 87, 1965; Einasto and Haud in Galaxy Astron. Astrophys. 223: 89, 1989; Merritt et al. in Astron. J. 132: 6, 2006) to describe the density profiles for the same purpose. Our choice for the latter is based on the fact that theoretical dark matter halos produced in computer simulations are best described by such a profile. For technical reasons we trim the number of parameters in the Einasto profile to a possible minimum. Based on such a model it is shown that traversable wormholes in the outer regions of spiral galaxies are possible while the inner part regions prohibit such formations.

引用

页数：9

共 65 条

[1]

Abramowitz M., 1972, Handbook of Mathematical Functions with Formulas, Graphs and Mathematical Tables

[2] Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts [J].

Ade, P. A. R. ;

Aghanim, N. ;

Armitage-Caplan, C. ;

Arnaud, M. ;

Ashdown, M. ;

Atrio-Barandela, F. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Barrena, R. ;

Bartlett, J. G. ;

Battaner, E. ;

Battye, R. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bikmaev, I. ;

Blanchard, A. ;

Bobin, J. ;

Bock, J. J. ;

Boehringer, H. ;

Bonaldi, A. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Bourdin, H. ;

Bridges, M. ;

Brown, M. L. ;

Bucher, M. ;

Burenin, R. ;

Burigana, C. ;

Butler, R. C. ;

Cardoso, J. -F. ;

Carvalho, P. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chary, R. -R. ;

Chiang, L. -Y ;

Chiang, H. C. ;

Chon, G. ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. .

ASTRONOMY & ASTROPHYSICS, 2014, 571

[3]

[Anonymous], METHODS MATH PHYS

[4] Constraining the Milky Way dark matter density profile with gamma-rays with Fermi-LAT [J].

Bernal, Nicolas ;

Palomares-Ruiz, Sergio .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2012, (01)

[5] Anisotropic dark matter distribution functions and impact on WIMP direct detection [J].

Bozorgnia, Nassim ;

Catena, Riccardo ;

Schwetz, Thomas .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2013, (12)

[6]

Castignani G., 2012, Natural Sci, V4, P265

[7] The impact of baryonic physics on the structure of dark matter haloes: the view from the FIRE cosmological simulations [J].

Chan, T. K. ;

Keres, D. ;

Onorbe, J. ;

Hopkins, P. F. ;

Muratov, A. L. ;

Faucher-Giguere, C. -A. ;

Quataert, E. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 454 (03) :2981-3001

[8]

Chandrasekhar S, 1983, MATH THEORY BLACK HO

[9] The search for dark matter [J].

Cline, David B. .

PHYSICA SCRIPTA, 2016, 91 (03)

[10] A review of WIMP baryogenesis mechanisms [J].

Cui, Yanou .

MODERN PHYSICS LETTERS A, 2015, 30 (37)

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