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Naked singularity

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including a realistic equation of state, delineating the specific relationship between the density and pressure within the cloud, has been thoroughly examined and investigated by numerous researchers over the years. They all result in either a black hole or a naked singularity depending on the initial data.
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emerges before the singularity, effectively covering it. Considering variations in the initial density (considering inhomogeneous density) profile, one can demonstrate a significant alteration in the behavior of the horizon. This leads to two distinct potential outcomes arising from the collapse of
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to escape the central singularity, where density and curvatures diverge, reaching distant observers. In exploring more realistic scenarios of collapse, one avenue involves incorporating pressures into the model. The consideration of gravitational collapse with non-zero pressures and various models
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March 2005), is a story about space travelers on an exploratory mission. While they investigate a strange cosmological phenomenon, their two small space crafts begin to shake, and they are unable to leave the area. One crew member realizes that they are trapped in the
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Some research has suggested that if loop quantum gravity is correct, then naked singularities could exist in nature, implying that the cosmic censorship hypothesis does not hold. Numerical calculations and some other arguments have also hinted at this possibility.
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generic dust: the formation of a black hole, characterized by the horizon preceding the singularity, and the emergence of a naked singularity, where the horizon is delayed. In the case of a naked singularity, this delay enables null geodesics or
123:(OSD) model illustrates the collapse of a spherical cloud composed of homogeneous dust (pressureless matter). In this scenario, all the matter converges into the spacetime singularity simultaneously in terms of comoving time. Notably, the 69:
caused by the singularity is so strong that light cannot escape. Hence, objects inside the event horizon—including the singularity itself—cannot be observed directly. In contrast, a naked singularity would be observable.
144:, which draw closer together as the spin of the singularity increases. When the outer and inner event horizons merge, they shrink toward the rotating singularity and eventually expose it to the rest of the universe. 830: 703: 361: 1002: 214:, has shown that contrary to what had been expected, singularities which are not hidden in a black hole also occur. However, he then showed that such "naked singularities" are unstable. 910: 512: 1232:, a naked singularity is used to compress the digitalized memories of the protagonist into a smaller size, to then be sent back in time with an improvised "time leap machine". 1165:
or naked singularity. The story describes a cluster of multiple black holes or singularities, and what the crew does to try to survive this seemingly inescapable situation.
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The theoretical existence of naked singularities is important because their existence would mean that it would be possible to observe the collapse of an object to
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When a massive star undergoes a gravitational collapse due to its own immense gravity, the ultimate outcome of this persistent collapse can manifest as either a
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or a naked singularity. This holds true across a diverse range of physically plausible scenarios within the framework of the general theory of relativity. The
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that, in the future, extends to an observer either at infinity or to an observer comoving with the collapsing cloud, and in the past terminates at the
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A naked singularity could allow scientists to observe an infinitely dense material, which would under normal circumstances be impossible by the
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near a singularity. In generic black holes, this is not a problem, as an outside viewer cannot observe the spacetime within the event horizon.
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background. The parameters of the singularity are M=1, a²+Q²=2M². The singularity is viewed from its equatorial plane at θ=90° (edge on).
3735: 3392: 140:, it is shown that a singularity, spinning rapidly, can become a ring-shaped object. This results in two event horizons, as well as an 2485: 2802: 1759:"Nakedness and curvature strength of a shell-focusing singularity in spherically symmetric spacetime with vanishing radial pressure" 3330: 3156: 3056: 147:
A singularity rotating fast enough might be created by the collapse of dust or by a supernova of a fast-spinning star. Studies of
2420: 2263:"Distinguishing Kerr naked singularities and black holes using the spin precession of a test gyro in strong gravitational fields" 2791: 2416: 755: 625: 283: 2833: 1315: 1183: 1175:
features the Xeelee, who create a massive ring that produces a naked singularity. It is used to travel to another universe.
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Eardley, Douglas M.; Smarr, Larry (1979-04-15). "Time functions in numerical relativity: Marginally bound dust collapse".
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experimentation, and threatens to destroy the universe if the time travel experiments are not stopped before they started.
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Werner, M. C.; Petters, A. O. (2007-09-24). "Magnification relations for Kerr lensing and testing cosmic censorship".
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Goswami, Rituparno; Joshi, Pankaj S.; Singh, Parampreet (2006-01-27). "Quantum Evaporation of a Naked Singularity".
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D. Christodoulou (1999). "The instability of naked singularities in the gravitational collapse of a scalar field".
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D.Christodoulou (1994). "Examples of naked singularity formation in the gravitational collapse of a scalar field".
1673:"Gravitational collapse with non-vanishing tangential stresses: II. A laboratory for cosmic censorship experiments" 3795: 3341: 616: 88:
indicate that their rate of rotation falls below the threshold to produce a naked singularity (spin parameter 1).
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The cosmic censorship hypothesis says that a gravitational singularity would remain hidden by the event horizon.
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could also be transmuted to the slowly-spinning near-solar mass naked singularities by capturing the asymmetric
3599: 3280: 2919: 1310:. International series of monographs on physics (1. paperback (with corr.) ed.). Oxford: Clarendon Press. 3367: 3242: 1640:"Gravitational collapse with non-vanishing tangential stresses: a generalization of the Tolman - Bondi model" 50: 3773: 3285: 3188: 2976: 1088: 1079:. Without an event horizon of any kind, some speculate that naked singularities could actually emit light. 1076: 120: 100: 3295: 3589: 3554: 3544: 1468:"Strengths of shell-focusing singularities in marginally bound collapsing self-similar Tolman spacetimes" 1260: 1195: 2261:
Chakraborty, C.; Kocherlakota, P.; Patil, M.; Bhattacharyya, S.; Joshi, P. S.; Krolak, A. (2017-04-12).
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Goswami, Rituparno; Joshi, Pankaj S. (2007-10-22). "Spherical gravitational collapse in N dimensions".
875: 477: 612:, i.e. the spin exceeds what is normally viewed as the upper limit of its physically possible values. 3730: 3232: 3146: 2894: 2826: 1282: 959:, or in other words, the singularity has no event horizon. However, this corresponds to a case where 54: 39: 1607:"Naked singularities and other features of self-similar general-relativistic gravitational collapse" 3407: 2262: 2221: 2180: 2139: 1354: 711: 369: 24: 1007: 3584: 3120: 3083: 2986: 2981: 2899: 2140:"Near- and sub-solar-mass naked singularities and black holes from transmutation of white dwarfs" 1168: 207: 580: 3614: 3502: 3487: 3346: 3039: 2853: 1064: 915: 619:
geometry of a charged black hole. In this metric, it can be shown that the horizons occur at
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Garfinkle, David (1997). "Choptuik scaling and the scale invariance of Einstein's equation".
1530:"Naked singularities in spherically symmetric inhomogeneous Tolman-Bondi dust cloud collapse" 237: 226: 2070:"Naked Singularities Can Actually Exist in a Three-Dimensional Universe, Physicists Predict" 2019:"Naked Singularities Formation in the Gravitational Collapse of Barotropic Spherical Fluids" 1035: 413: 3876: 3763: 3471: 3443: 3326: 3254: 3222: 3066: 2874: 2819: 2755: 2697: 2640: 2581: 2520: 2479: 2112: 1976:"New Solutions of Einstein Equations in Spherical Symmetry: The Cosmic Censor to the Court" 104: 835: 8: 3860: 3594: 3569: 3539: 3497: 3451: 3088: 2954: 2949: 2879: 2044: 1277: 1208: 137: 20: 2759: 2701: 2644: 2585: 2524: 2206: 2165: 2116: 2018: 3848: 3836: 3428: 3300: 3205: 2996: 2964: 2929: 2889: 2884: 2779: 2745: 2687: 2613: 2571: 2544: 2510: 2372: 2364: 2346: 2319: 2274: 2233: 2192: 2151: 2102: 2030: 1987: 1942: 1899: 1856: 1813: 1770: 1727: 1684: 1541: 1366: 1247: 942: 855: 517: 260: 31: 1698: 155:, 1997) have been performed. Intriguingly, it is recently reported that some spinning 3574: 3559: 3259: 3247: 3200: 3141: 3110: 3100: 3034: 2783: 2771: 2715: 2656: 2605: 2597: 2548: 2536: 2048: 2005: 1962: 1917: 1874: 1831: 1827: 1788: 1784: 1745: 1702: 1659: 1655: 1626: 1593: 1448: 1311: 1212:
the nonexistence of a naked singularity hinders humanity from completing a theory of
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is high enough, the event horizons could disappear. Transforming the Kerr metric to
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Naked singularities have not been observed in nature. Astronomical observations of
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comes closest to the limit, with a spin parameter of 0.82-1.00. It is hinted that
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Giambò, Roberto; Giannoni, Fabio; Magli, Giulio; Piccione, Paolo (April 2003).
1870: 1741: 1499:"Shell-focusing singularities in spherically symmetric self-similar spacetimes" 1380: 1236: 2124: 2017:
Giambò, Roberto; Giannoni, Fabio; Magli, Giulio; Piccione, Paolo (June 2004).
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with a wide range of near- and sub-solar-mass values by capturing asymmetric
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to be complex. This means the metric is regular for all positive values of
3824: 3675: 3549: 3517: 3125: 3044: 2609: 1429:"Über eine Klasse von Lösungen der Gravitationsgleichungen der Relativität" 1412: 1224: 573: 180: 156: 129: 3715: 3665: 3619: 3522: 3397: 3336: 3061: 2969: 2464: 2447: 2260: 1930: 1253: 1228: 246: 176: 172: 164: 160: 2710: 2675: 1957: 3705: 3635: 3604: 3579: 3532: 3527: 3512: 3178: 3115: 3105: 3006: 2842: 2323: 1444: 1162: 1158: 1133: 211: 196: 192: 184: 141: 116: 85: 58: 2692: 2576: 2515: 2368: 2107: 2035: 1992: 1947: 1904: 1861: 1818: 1775: 1732: 1689: 1574:"Naked singularities in self-similar spherical gravitational collapse" 1546: 3740: 3387: 3290: 3078: 3073: 2351: 1716:"Final fate of the spherically symmetric collapse of a perfect fluid" 1428: 1241: 230: 188: 78: 66: 2750: 2315: 249:, which is a spinning black hole in a vacuum. Specifically, if the 61:, the singularity is completely enclosed by a boundary known as the 57:, then that singularity is referred to as a naked singularity. In a 3650: 3609: 3507: 2360: 2279: 2238: 2197: 2156: 1371: 1264: 1098: 2222:"Spin precession in a black hole and naked singularity spacetimes" 159:
can realistically transmute into rotating naked singularities and
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due to the inaccessibility of experimental data from inside the
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Chakraborty, C.; Bhattacharyya, S.; Joshi, P. S. (2024-07-22).
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Harada, Tomohiro; Nakao, Ken-ichi; Iguchi, Hideo (1999-07-20).
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Chakraborty, C.; Kocherlakota, P.; Joshi, P. S. (2017-02-06).
1888:"Singularities in Gravitational Collapse with Radial Pressure" 2178: 1886:
Gonçalves, SÊrgio M. C. V.; Jhingan, Sanjay (December 2001).
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coordinate (which is not the radius) of the event horizon is
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is correct, naked singularities may be possible in nature.
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Comparison with an extremal black hole with M=1, a²+Q²=1M²
825:{\displaystyle q^{2}=GQ^{2}/(4\pi \varepsilon _{0}c^{4})} 103:, gravitational singularities may not be observable. If 2137: 1352: 1333:"Pushing the Limit: Black Hole Spins at Phenomenal Rate" 698:{\displaystyle r_{\pm }=\mu \pm (\mu ^{2}-q^{2})^{1/2},} 356:{\displaystyle r_{\pm }=\mu \pm (\mu ^{2}-a^{2})^{1/2},} 229:
image of a hypothetical naked singularity in front of a
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can be modeled as an anisotropic fluid. In general, the
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Disappearing event horizons can also be seen with the
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a naked singularity is found to be a side effect of
2676:"Nature of Singularities in Gravitational Collapse" 1931:"Physical Processes in Naked Singularity Formation" 1929:Harada, T.; Iguchi, H.; Nakao, K.-I. (2002-03-01). 203:can be used to distinguish these exotic objects. 1050: 1023: 996: 951: 931: 904: 864: 844: 824: 744: 697: 602: 564: 526: 506: 466: 439: 402: 355: 269: 2639:(8). American Physical Society (APS): 2239–2259. 2561: 2421:"Is a 'naked singularity' lurking in our galaxy?" 2404:General Relativity an Introduction for Physicists 2391:General Relativity an Introduction for Physicists 2138:Chakraborty, C.; Bhattacharyya, S. (2024-06-05). 1928: 1756: 1393: 1353:Chakraborty, C.; Bhattacharyya, S. (2018-08-28). 997:{\displaystyle Q/{\sqrt {4\pi \varepsilon _{0}}}} 3868: 2336: 1885: 2301: 1082: 2185:Journal of Cosmology and Astroparticle Physics 2144:Journal of Cosmology and Astroparticle Physics 1186:, the Cylon colony orbits a naked singularity. 2827: 2735: 2406:, Cambridge University Press 2007, p. 320-325 2393:, Cambridge University Press 2007, p. 300-305 1800:Joshi, P. S.; Dwivedi, I. H. (January 1999). 1394:Oppenheimer, J. R.; Snyder, H. (1939-09-01). 2803:"Fast-spinning black holes might reveal all" 2630: 2500: 1842: 1799: 1527: 1330: 514:. However, this corresponds to a case where 195:of orbits of matter falling into a rotating 2330: 1528:Joshi, P. S.; Dwivedi, I. H. (1993-06-15). 1308:Global aspects in gravitation and cosmology 3393:Magnetospheric eternally collapsing object 2834: 2820: 2680:Progress of Theoretical Physics Supplement 1067:for a spinning, charged ring singularity. 2749: 2709: 2691: 2575: 2514: 2463: 2445: 2415: 2350: 2278: 2237: 2196: 2155: 2106: 2092: 2034: 1991: 1956: 1946: 1903: 1860: 1817: 1774: 1731: 1688: 1545: 1496: 1465: 1411: 1370: 245:Disappearing event horizons exist in the 1604: 1571: 1396:"On Continued Gravitational Contraction" 236: 221: 175:particles, if the accumulated cloud of 3869: 2673: 1980:Communications in Mathematical Physics 1713: 1199:is believed to be a naked singularity. 110: 2815: 1843:Jhingan, S.; Magli, G. (2000-05-09). 1670: 1637: 1605:Ori, Amos; Piran, Tsvi (1990-08-15). 1572:Ori, Amos; Piran, Tsvi (1987-11-09). 1497:Waugh, B.; Lake, Kayll (1989-09-15). 1466:Waugh, B.; Lake, Kayll (1988-08-15). 1305: 3769: 2067: 1426: 1324: 167:particles. Similarly, the spinning 13: 2729: 2045:10.1023/b:gerg.0000022388.11306.e1 2023:General Relativity and Gravitation 1892:General Relativity and Gravitation 14: 3888: 1331:Jeanna Bryne (20 November 2006). 905:{\displaystyle \mu ^{2}<q^{2}} 507:{\displaystyle \mu ^{2}<a^{2}} 3854: 3842: 3830: 3818: 3806: 3794: 3768: 3759: 3758: 3057:Tolman–Oppenheimer–Volkoff limit 2928: 65:, inside which the curvature of 3174:Innermost stable circular orbit 2841: 2667: 2624: 2555: 2494: 2472: 2446:Pretorius, Frans (2016-05-31). 2439: 2409: 2396: 2383: 2295: 2254: 2213: 2172: 2131: 2086: 2061: 1935:Progress of Theoretical Physics 1714:Harada, Tomohiro (1998-10-09). 151:and some computer simulations ( 49:When there exists at least one 3600:Timeline of black hole physics 1562: 1521: 1490: 1459: 1420: 1387: 1346: 1299: 819: 790: 675: 648: 333: 306: 96:could be a naked singularity. 1: 3368:Nonsingular black hole models 2594:10.1103/physrevlett.96.031302 2207:10.1088/1475-7516/2024/07/053 2166:10.1088/1475-7516/2024/06/007 1806:Classical and Quantum Gravity 1763:Classical and Quantum Gravity 1677:Classical and Quantum Gravity 1644:Classical and Quantum Gravity 1293: 1108: 745:{\displaystyle \mu =GM/c^{2}} 403:{\displaystyle \mu =GM/c^{2}} 1671:Magli, Giulio (1998-10-01). 1638:Magli, Giulio (1997-07-01). 1089:Cosmic censorship hypothesis 1083:Cosmic censorship hypothesis 1077:cosmic censorship hypothesis 1024:{\displaystyle M{\sqrt {G}}} 101:cosmic censorship hypothesis 7: 3590:Rossi X-ray Timing Explorer 3555:Hypercompact stellar system 3545:Gamma-ray burst progenitors 1699:10.1088/0264-9381/15/10/022 1590:10.1103/physrevlett.59.2137 1271: 1259:In the eighth part of the “ 257:, it can be shown that the 255:Boyer–Lindquist coordinates 179:particles in the core of a 10: 3893: 3276:Black hole complementarity 3243:Bousso's holographic bound 3228:Quasi-periodic oscillation 2926: 2920:Malament–Hogarth spacetime 2768:10.1103/physrevd.76.064024 2533:10.1103/physrevd.76.084026 2289:10.1103/PhysRevD.95.084024 2248:10.1103/PhysRevD.95.044006 1871:10.1103/physrevd.61.124006 1828:10.1088/0264-9381/16/1/003 1785:10.1088/0264-9381/16/8/315 1742:10.1103/physrevd.58.104015 1656:10.1088/0264-9381/14/7/026 1381:10.1103/PhysRevD.98.043021 1086: 1070: 603:{\displaystyle J>M^{2}} 217: 18: 3754: 3628: 3480: 3442: 3421: 3360: 3319: 3268: 3147:Gravitational singularity 3134: 3027: 2937: 2862: 2849: 2125:10.1103/PhysRevD.56.R3169 2068:Crew, Bec (23 May 2017). 2002:10.1007/s00220-003-0793-9 1306:Joshi, Pankaj S. (1996). 1283:Gravitational singularity 136:From concepts drawn from 55:gravitational singularity 40:gravitational singularity 3731:PSO J030947.49+271757.31 3656:SDSS J150243.09+111557.3 3189:Blandford–Znajek process 2674:KrĂłlak, Andrzej (1999). 2653:10.1103/physrevd.19.2239 1623:10.1103/physrevd.42.1068 1556:10.1103/PhysRevD.47.5357 1515:10.1103/PhysRevD.40.2137 1484:10.1103/PhysRevD.38.1315 1261:JoJo's Bizarre Adventure 1196:The Night's Dawn Trilogy 932:{\displaystyle r_{\pm }} 565:{\displaystyle GM^{2}/c} 467:{\displaystyle r_{\pm }} 25:Naked Singularity (film) 2987:Active galactic nucleus 2564:Physical Review Letters 1914:10.1023/a:1015285531320 1578:Physical Review Letters 1427:Datt, B. (1938-05-01). 1178:In the episode titled " 208:Demetrios Christodoulou 121:Oppenheimer–Snyder–Datt 16:Hypothetical phenomenon 3615:Tidal disruption event 3585:Supermassive dark star 3503:Black holes in fiction 3488:Outline of black holes 3121:Supermassive dark star 3040:Gravitational collapse 1433:Zeitschrift fĂźr Physik 1413:10.1103/PhysRev.56.455 1052: 1051:{\displaystyle Q>M} 1025: 998: 953: 933: 906: 866: 846: 826: 746: 699: 604: 566: 528: 508: 468: 441: 440:{\displaystyle a=J/Mc} 404: 357: 271: 242: 234: 3493:Black Hole Initiative 3306:Holographic principle 1053: 1031:(or in Planck units, 1026: 999: 954: 934: 907: 867: 847: 827: 747: 700: 605: 567: 529: 509: 469: 442: 405: 358: 272: 240: 225: 23:. For the movie, see 3296:Final parsec problem 3255:Schwarzschild radius 2465:10.1103/Physics.9.52 1189:The Sleeping God in 1184:Battlestar Galactica 1036: 1008: 963: 943: 916: 876: 856: 845:{\displaystyle \mu } 836: 756: 712: 626: 581: 538: 518: 478: 451: 414: 370: 284: 261: 138:rotating black holes 105:loop quantum gravity 3595:Superluminal motion 3570:Population III star 3540:Gravitational waves 3498:Black hole starship 3281:Information paradox 2796:Scientific American 2760:2007PhRvD..76f4024W 2711:10.1143/ptps.136.45 2702:1999PThPS.136...45K 2645:1979PhRvD..19.2239E 2586:2006PhRvL..96c1302G 2525:2007PhRvD..76h4026G 2117:1997PhRvD..56.3169G 1958:10.1143/ptp.107.449 1278:Black hole electron 111:Predicted formation 21:A Naked Singularity 19:For the novel, see 3429:Optical black hole 3342:Reissner–NordstrĂśm 3301:Firewall (physics) 3206:Gravitational lens 2488:2015-12-21 at the 2419:(1 October 2007). 2417:Battersby, Stephen 2101:(6): R3169–R3173. 1568:Examples include: 1445:10.1007/BF01374951 1248:The Entropy Effect 1097:events, including 1065:Kerr–Newman metric 1048: 1021: 994: 949: 929: 902: 862: 842: 822: 742: 695: 617:Reissner–NordstrĂśm 600: 562: 524: 504: 464: 437: 400: 353: 267: 243: 235: 210:, a winner of the 38:is a hypothetical 32:general relativity 3782: 3781: 3575:Supermassive star 3565:Naked singularity 3560:Membrane paradigm 3286:Cosmic censorship 3260:Spaghettification 3248:Immirzi parameter 3201:Hawking radiation 3142:Astrophysical jet 3111:Supermassive star 3101:Binary black hole 3035:Stellar evolution 2977:Intermediate-mass 2790:Pankaj S. Joshi, 2738:Physical Review D 2633:Physical Review D 2503:Physical Review D 2267:Physical Review D 2226:Physical Review D 1898:(12): 2125–2149. 1849:Physical Review D 1720:Physical Review D 1683:(10): 3215–3228. 1611:Physical Review D 1584:(19): 2137–2140. 1540:(12): 5357–5369. 1534:Physical Review D 1503:Physical Review D 1472:Physical Review D 1359:Physical Review D 1317:978-0-19-850079-7 1263:” manga series, “ 1204:Christopher Nolan 1019: 992: 952:{\displaystyle r} 872:, the case where 865:{\displaystyle q} 527:{\displaystyle J} 270:{\displaystyle r} 201:naked singularity 99:According to the 36:naked singularity 3884: 3859: 3858: 3857: 3847: 3846: 3845: 3835: 3834: 3833: 3823: 3822: 3811: 3810: 3809: 3799: 3798: 3790: 3772: 3771: 3762: 3761: 3434:Sonic black hole 3383:Dark-energy star 3238:Bekenstein bound 3223:M–sigma relation 3152:Ring singularity 2932: 2836: 2829: 2822: 2813: 2812: 2787: 2753: 2724: 2723: 2713: 2695: 2671: 2665: 2664: 2628: 2622: 2621: 2579: 2559: 2553: 2552: 2518: 2498: 2492: 2481:Living Rev. Rel. 2476: 2470: 2469: 2467: 2443: 2437: 2436: 2434: 2433: 2413: 2407: 2402:Hobson, et al., 2400: 2394: 2389:Hobson, et al., 2387: 2381: 2380: 2354: 2334: 2328: 2327: 2299: 2293: 2292: 2282: 2258: 2252: 2251: 2241: 2217: 2211: 2210: 2200: 2176: 2170: 2169: 2159: 2135: 2129: 2128: 2110: 2090: 2084: 2083: 2081: 2080: 2065: 2059: 2056: 2038: 2029:(6): 1279–1298. 2013: 1995: 1970: 1960: 1950: 1925: 1907: 1882: 1864: 1839: 1821: 1796: 1778: 1769:(8): 2785–2796. 1753: 1735: 1710: 1692: 1667: 1650:(7): 1937–1953. 1634: 1617:(4): 1068–1090. 1601: 1566: 1560: 1559: 1549: 1525: 1519: 1518: 1509:(6): 2137–2139. 1494: 1488: 1487: 1478:(4): 1315–1316. 1463: 1457: 1456: 1424: 1418: 1417: 1415: 1391: 1385: 1384: 1374: 1350: 1344: 1343: 1341: 1340: 1328: 1322: 1321: 1303: 1288:Ring singularity 1146:"Dark Peril" by 1115:M. John Harrison 1059: 1057: 1055: 1054: 1049: 1030: 1028: 1027: 1022: 1020: 1015: 1003: 1001: 1000: 995: 993: 991: 990: 975: 973: 958: 956: 955: 950: 938: 936: 935: 930: 928: 927: 911: 909: 908: 903: 901: 900: 888: 887: 871: 869: 868: 863: 851: 849: 848: 843: 831: 829: 828: 823: 818: 817: 808: 807: 789: 784: 783: 768: 767: 751: 749: 748: 743: 741: 740: 731: 704: 702: 701: 696: 691: 690: 686: 673: 672: 660: 659: 638: 637: 611: 609: 607: 606: 601: 599: 598: 571: 569: 568: 563: 558: 553: 552: 533: 531: 530: 525: 513: 511: 510: 505: 503: 502: 490: 489: 473: 471: 470: 465: 463: 462: 446: 444: 443: 438: 430: 409: 407: 406: 401: 399: 398: 389: 362: 360: 359: 354: 349: 348: 344: 331: 330: 318: 317: 296: 295: 276: 274: 273: 268: 251:angular momentum 75:infinite density 3892: 3891: 3887: 3886: 3885: 3883: 3882: 3881: 3867: 3866: 3865: 3855: 3853: 3843: 3841: 3831: 3829: 3817: 3807: 3805: 3793: 3785: 3783: 3778: 3750: 3726:ULAS J1342+0928 3686:SDSS J0849+1114 3671:Phoenix Cluster 3624: 3476: 3438: 3417: 3356: 3315: 3311:No-hair theorem 3264: 3218:Bondi accretion 3184:Penrose process 3130: 3096:Gamma-ray burst 3023: 2933: 2924: 2910:Direct collapse 2858: 2845: 2840: 2798:, January 2009. 2732: 2730:Further reading 2727: 2672: 2668: 2629: 2625: 2560: 2556: 2499: 2495: 2490:Wayback Machine 2477: 2473: 2444: 2440: 2431: 2429: 2414: 2410: 2401: 2397: 2388: 2384: 2335: 2331: 2316:10.2307/2118619 2300: 2296: 2259: 2255: 2218: 2214: 2177: 2173: 2136: 2132: 2091: 2087: 2078: 2076: 2066: 2062: 1567: 1563: 1526: 1522: 1495: 1491: 1464: 1460: 1425: 1421: 1400:Physical Review 1392: 1388: 1351: 1347: 1338: 1336: 1329: 1325: 1318: 1304: 1300: 1296: 1274: 1214:quantum gravity 1173:Xeelee Sequence 1123:science fiction 1119:Kefahuchi Tract 1111: 1091: 1085: 1073: 1037: 1034: 1033: 1032: 1014: 1009: 1006: 1005: 986: 982: 974: 969: 964: 961: 960: 944: 941: 940: 923: 919: 917: 914: 913: 896: 892: 883: 879: 877: 874: 873: 857: 854: 853: 837: 834: 833: 813: 809: 803: 799: 785: 779: 775: 763: 759: 757: 754: 753: 736: 732: 727: 713: 710: 709: 682: 678: 674: 668: 664: 655: 651: 633: 629: 627: 624: 623: 594: 590: 582: 579: 578: 577: 554: 548: 544: 539: 536: 535: 519: 516: 515: 498: 494: 485: 481: 479: 476: 475: 458: 454: 452: 449: 448: 426: 415: 412: 411: 394: 390: 385: 371: 368: 367: 340: 336: 332: 326: 322: 313: 309: 291: 287: 285: 282: 281: 262: 259: 258: 220: 113: 51:causal geodesic 28: 17: 12: 11: 5: 3890: 3880: 3879: 3864: 3863: 3851: 3839: 3827: 3815: 3803: 3780: 3779: 3777: 3776: 3766: 3755: 3752: 3751: 3749: 3748: 3746:Swift J1644+57 3743: 3738: 3733: 3728: 3723: 3718: 3713: 3708: 3703: 3698: 3696:MS 0735.6+7421 3693: 3688: 3683: 3678: 3673: 3668: 3663: 3661:Sagittarius A* 3658: 3653: 3648: 3643: 3638: 3632: 3630: 3626: 3625: 3623: 3622: 3617: 3612: 3607: 3602: 3597: 3592: 3587: 3582: 3577: 3572: 3567: 3562: 3557: 3552: 3547: 3542: 3537: 3536: 3535: 3530: 3520: 3515: 3510: 3505: 3500: 3495: 3490: 3484: 3482: 3478: 3477: 3475: 3474: 3469: 3464: 3459: 3454: 3448: 3446: 3440: 3439: 3437: 3436: 3431: 3425: 3423: 3419: 3418: 3416: 3415: 3410: 3405: 3400: 3395: 3390: 3385: 3380: 3375: 3370: 3364: 3362: 3358: 3357: 3355: 3354: 3349: 3344: 3339: 3334: 3323: 3321: 3317: 3316: 3314: 3313: 3308: 3303: 3298: 3293: 3288: 3283: 3278: 3272: 3270: 3266: 3265: 3263: 3262: 3257: 3252: 3251: 3250: 3240: 3235: 3233:Thermodynamics 3230: 3225: 3220: 3215: 3214: 3213: 3203: 3198: 3196:Accretion disk 3193: 3192: 3191: 3186: 3176: 3171: 3166: 3161: 3160: 3159: 3154: 3144: 3138: 3136: 3132: 3131: 3129: 3128: 3123: 3118: 3113: 3108: 3103: 3098: 3093: 3092: 3091: 3086: 3081: 3071: 3070: 3069: 3059: 3054: 3053: 3052: 3042: 3037: 3031: 3029: 3025: 3024: 3022: 3021: 3020: 3019: 3014: 3009: 3004: 2999: 2994: 2989: 2979: 2974: 2973: 2972: 2962: 2961: 2960: 2957: 2952: 2941: 2939: 2935: 2934: 2927: 2925: 2923: 2922: 2917: 2912: 2907: 2902: 2897: 2892: 2887: 2882: 2877: 2872: 2870:BTZ black hole 2866: 2864: 2860: 2859: 2857: 2856: 2850: 2847: 2846: 2839: 2838: 2831: 2824: 2816: 2810: 2809: 2808:, August 2009. 2801:Marcus Chown, 2799: 2788: 2731: 2728: 2726: 2725: 2666: 2623: 2554: 2493: 2471: 2438: 2408: 2395: 2382: 2361:10.2307/121023 2345:(1): 183–217. 2329: 2310:(3): 607–653. 2294: 2253: 2212: 2171: 2130: 2085: 2060: 2058: 2057: 2014: 1986:(3): 545–563. 1971: 1941:(3): 449–524. 1926: 1883: 1840: 1797: 1754: 1711: 1668: 1635: 1602: 1561: 1520: 1489: 1458: 1439:(5): 314–321. 1419: 1406:(5): 455–459. 1386: 1345: 1323: 1316: 1297: 1295: 1292: 1291: 1290: 1285: 1280: 1273: 1270: 1269: 1268: 1257: 1237:Vonda McIntyre 1233: 1221: 1200: 1191:Peter Hamilton 1187: 1176: 1169:Stephen Baxter 1166: 1150:(published in 1148:James C. Glass 1144: 1110: 1107: 1087:Main article: 1084: 1081: 1072: 1069: 1047: 1044: 1041: 1018: 1013: 989: 985: 981: 978: 972: 968: 948: 926: 922: 899: 895: 891: 886: 882: 861: 841: 821: 816: 812: 806: 802: 798: 795: 792: 788: 782: 778: 774: 771: 766: 762: 739: 735: 730: 726: 723: 720: 717: 706: 705: 694: 689: 685: 681: 677: 671: 667: 663: 658: 654: 650: 647: 644: 641: 636: 632: 597: 593: 589: 586: 561: 557: 551: 547: 543: 523: 501: 497: 493: 488: 484: 461: 457: 436: 433: 429: 425: 422: 419: 397: 393: 388: 384: 381: 378: 375: 364: 363: 352: 347: 343: 339: 335: 329: 325: 321: 316: 312: 308: 305: 302: 299: 294: 290: 266: 219: 216: 206:Mathematician 112: 109: 15: 9: 6: 4: 3: 2: 3889: 3878: 3875: 3874: 3872: 3862: 3852: 3850: 3840: 3838: 3828: 3826: 3821: 3816: 3814: 3804: 3802: 3797: 3792: 3791: 3788: 3775: 3767: 3765: 3757: 3756: 3753: 3747: 3744: 3742: 3739: 3737: 3734: 3732: 3729: 3727: 3724: 3722: 3721:Markarian 501 3719: 3717: 3714: 3712: 3709: 3707: 3704: 3702: 3699: 3697: 3694: 3692: 3689: 3687: 3684: 3682: 3679: 3677: 3674: 3672: 3669: 3667: 3664: 3662: 3659: 3657: 3654: 3652: 3649: 3647: 3646:XTE J1118+480 3644: 3642: 3641:XTE J1650-500 3639: 3637: 3634: 3633: 3631: 3627: 3621: 3618: 3616: 3613: 3611: 3608: 3606: 3603: 3601: 3598: 3596: 3593: 3591: 3588: 3586: 3583: 3581: 3578: 3576: 3573: 3571: 3568: 3566: 3563: 3561: 3558: 3556: 3553: 3551: 3548: 3546: 3543: 3541: 3538: 3534: 3531: 3529: 3526: 3525: 3524: 3521: 3519: 3516: 3514: 3511: 3509: 3506: 3504: 3501: 3499: 3496: 3494: 3491: 3489: 3486: 3485: 3483: 3479: 3473: 3470: 3468: 3465: 3463: 3460: 3458: 3455: 3453: 3450: 3449: 3447: 3445: 3441: 3435: 3432: 3430: 3427: 3426: 3424: 3420: 3414: 3411: 3409: 3406: 3404: 3401: 3399: 3396: 3394: 3391: 3389: 3386: 3384: 3381: 3379: 3376: 3374: 3371: 3369: 3366: 3365: 3363: 3359: 3353: 3350: 3348: 3345: 3343: 3340: 3338: 3335: 3332: 3328: 3327:Schwarzschild 3325: 3324: 3322: 3318: 3312: 3309: 3307: 3304: 3302: 3299: 3297: 3294: 3292: 3289: 3287: 3284: 3282: 3279: 3277: 3274: 3273: 3271: 3267: 3261: 3258: 3256: 3253: 3249: 3246: 3245: 3244: 3241: 3239: 3236: 3234: 3231: 3229: 3226: 3224: 3221: 3219: 3216: 3212: 3209: 3208: 3207: 3204: 3202: 3199: 3197: 3194: 3190: 3187: 3185: 3182: 3181: 3180: 3177: 3175: 3172: 3170: 3169:Photon sphere 3167: 3165: 3164:Event horizon 3162: 3158: 3155: 3153: 3150: 3149: 3148: 3145: 3143: 3140: 3139: 3137: 3133: 3127: 3124: 3122: 3119: 3117: 3114: 3112: 3109: 3107: 3104: 3102: 3099: 3097: 3094: 3090: 3089:Related links 3087: 3085: 3082: 3080: 3077: 3076: 3075: 3072: 3068: 3067:Related links 3065: 3064: 3063: 3060: 3058: 3055: 3051: 3050:Related links 3048: 3047: 3046: 3043: 3041: 3038: 3036: 3033: 3032: 3030: 3026: 3018: 3015: 3013: 3010: 3008: 3005: 3003: 3000: 2998: 2995: 2993: 2990: 2988: 2985: 2984: 2983: 2980: 2978: 2975: 2971: 2968: 2967: 2966: 2963: 2958: 2956: 2953: 2951: 2948: 2947: 2946: 2943: 2942: 2940: 2936: 2931: 2921: 2918: 2916: 2913: 2911: 2908: 2906: 2903: 2901: 2898: 2896: 2893: 2891: 2888: 2886: 2883: 2881: 2878: 2876: 2875:Schwarzschild 2873: 2871: 2868: 2867: 2865: 2861: 2855: 2852: 2851: 2848: 2844: 2837: 2832: 2830: 2825: 2823: 2818: 2817: 2814: 2807: 2806:New Scientist 2804: 2800: 2797: 2793: 2789: 2785: 2781: 2777: 2773: 2769: 2765: 2761: 2757: 2752: 2747: 2744:(6): 064024. 2743: 2739: 2734: 2733: 2721: 2717: 2712: 2707: 2703: 2699: 2694: 2693:gr-qc/9910108 2689: 2685: 2681: 2677: 2670: 2662: 2658: 2654: 2650: 2646: 2642: 2638: 2634: 2627: 2619: 2615: 2611: 2607: 2603: 2599: 2595: 2591: 2587: 2583: 2578: 2577:gr-qc/0506129 2573: 2570:(3): 031302. 2569: 2565: 2558: 2550: 2546: 2542: 2538: 2534: 2530: 2526: 2522: 2517: 2516:gr-qc/0608136 2512: 2509:(8): 084026. 2508: 2504: 2497: 2491: 2487: 2484: 2483:8, (2005), 11 2482: 2478:M. Bojowald, 2475: 2466: 2461: 2457: 2453: 2449: 2442: 2428: 2427: 2426:New Scientist 2422: 2418: 2412: 2405: 2399: 2392: 2386: 2378: 2374: 2370: 2366: 2362: 2358: 2353: 2348: 2344: 2340: 2333: 2325: 2321: 2317: 2313: 2309: 2305: 2298: 2290: 2286: 2281: 2276: 2273:(8): 084024. 2272: 2268: 2264: 2257: 2249: 2245: 2240: 2235: 2232:(4): 044006. 2231: 2227: 2223: 2216: 2208: 2204: 2199: 2194: 2190: 2186: 2182: 2175: 2167: 2163: 2158: 2153: 2149: 2145: 2141: 2134: 2126: 2122: 2118: 2114: 2109: 2108:gr-qc/9612015 2104: 2100: 2096: 2089: 2075: 2071: 2064: 2054: 2050: 2046: 2042: 2037: 2036:gr-qc/0303043 2032: 2028: 2024: 2020: 2015: 2011: 2007: 2003: 1999: 1994: 1993:gr-qc/0204030 1989: 1985: 1981: 1977: 1972: 1968: 1964: 1959: 1954: 1949: 1948:gr-qc/0204008 1944: 1940: 1936: 1932: 1927: 1923: 1919: 1915: 1911: 1906: 1905:gr-qc/0107054 1901: 1897: 1893: 1889: 1884: 1880: 1876: 1872: 1868: 1863: 1862:gr-qc/9902041 1858: 1854: 1850: 1846: 1841: 1837: 1833: 1829: 1825: 1820: 1819:gr-qc/9804075 1815: 1811: 1807: 1803: 1798: 1794: 1790: 1786: 1782: 1777: 1776:gr-qc/9904073 1772: 1768: 1764: 1760: 1755: 1751: 1747: 1743: 1739: 1734: 1733:gr-qc/9807038 1729: 1725: 1721: 1717: 1712: 1708: 1704: 1700: 1696: 1691: 1690:gr-qc/9711082 1686: 1682: 1678: 1674: 1669: 1665: 1661: 1657: 1653: 1649: 1645: 1641: 1636: 1632: 1628: 1624: 1620: 1616: 1612: 1608: 1603: 1599: 1595: 1591: 1587: 1583: 1579: 1575: 1570: 1569: 1565: 1557: 1553: 1548: 1547:gr-qc/9303037 1543: 1539: 1535: 1531: 1524: 1516: 1512: 1508: 1504: 1500: 1493: 1485: 1481: 1477: 1473: 1469: 1462: 1454: 1450: 1446: 1442: 1438: 1435:(in German). 1434: 1430: 1423: 1414: 1409: 1405: 1401: 1397: 1390: 1382: 1378: 1373: 1368: 1365:(4): 043021. 1364: 1360: 1356: 1349: 1334: 1327: 1319: 1313: 1309: 1302: 1298: 1289: 1286: 1284: 1281: 1279: 1276: 1275: 1266: 1262: 1258: 1255: 1251: 1249: 1244: 1243: 1238: 1234: 1231: 1230: 1226: 1222: 1219: 1218:event horizon 1215: 1211: 1210: 1205: 1201: 1198: 1197: 1192: 1188: 1185: 1181: 1177: 1174: 1170: 1167: 1164: 1160: 1155: 1154: 1149: 1145: 1142: 1141: 1136: 1135: 1130: 1129: 1124: 1120: 1116: 1113: 1112: 1106: 1102: 1100: 1096: 1090: 1080: 1078: 1068: 1066: 1061: 1045: 1042: 1039: 1016: 1011: 987: 983: 979: 976: 970: 966: 946: 924: 920: 897: 893: 889: 884: 880: 859: 839: 814: 810: 804: 800: 796: 793: 786: 780: 776: 772: 769: 764: 760: 737: 733: 728: 724: 721: 718: 715: 692: 687: 683: 679: 669: 665: 661: 656: 652: 645: 642: 639: 634: 630: 622: 621: 620: 618: 613: 595: 591: 587: 584: 575: 559: 555: 549: 545: 541: 521: 499: 495: 491: 486: 482: 459: 455: 434: 431: 427: 423: 420: 417: 395: 391: 386: 382: 379: 376: 373: 350: 345: 341: 337: 327: 323: 319: 314: 310: 303: 300: 297: 292: 288: 280: 279: 278: 264: 256: 252: 248: 239: 232: 228: 224: 215: 213: 209: 204: 202: 198: 194: 190: 186: 182: 178: 174: 170: 169:neutron stars 166: 162: 158: 154: 150: 145: 143: 139: 134: 131: 126: 125:event horizon 122: 118: 108: 106: 102: 97: 95: 91: 87: 82: 80: 76: 71: 68: 64: 63:event horizon 60: 56: 52: 47: 45: 44:event horizon 41: 37: 33: 26: 22: 3861:Solar System 3676:PKS 1302-102 3564: 3550:Gravity well 3518:Compact star 3472:Microquasars 3457:Most massive 3361:Alternatives 3126:X-ray binary 3045:Neutron star 2982:Supermassive 2959:Hawking star 2900:Supermassive 2805: 2795: 2741: 2737: 2683: 2679: 2669: 2636: 2632: 2626: 2567: 2563: 2557: 2506: 2502: 2496: 2480: 2474: 2455: 2451: 2441: 2430:. 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Index

A Naked Singularity
Naked Singularity (film)
general relativity
gravitational singularity
event horizon
causal geodesic
gravitational singularity
black hole
event horizon
spacetime
spacetime
black holes
GRS 1915+105
GRO J1655−40
cosmic censorship hypothesis
loop quantum gravity
black hole
Oppenheimer–Snyder–Datt
event horizon
light rays
rotating black holes
ergosphere
pulsars
Choptuik
white dwarfs
black holes
dark matter
neutron stars
dark matter
dark matter

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