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Gutiérrez-Piñeres A.C. Quevedo H. 2020-03-26T16:32:42Z 2020-03-26T16:32:42Z 2016 General Relativity and Gravitation; Vol. 48, Núm. 11 00017701 https://hdl.handle.net/20.500.12585/8979 10.1007/s10714-016-2144-0 Universidad Tecnológica de Bolívar Repositorio UTB 25225467000 55989741100 The Newman–Janis Ansatz was used first to obtain the stationary Kerr metric from the static Schwarzschild metric. Many works have been devoted to investigate the physical significance of this Ansatz, but no definite answer has been given so far. We show that this Ansatz can be applied in general to conformastatic vacuum metrics, and leads to stationary generalizations which, however, do not preserve the conformal symmetry. We investigate also the particular case when the seed solution is given by the Schwarzschild spacetime and show that the resulting rotating configuration does not correspond to a vacuum solution, even in the limiting case of slow rotation. In fact, it describes in general a relativistic fluid with anisotropic pressure and heat flux. This implies that the Newman–Janis Ansatz strongly depends on the choice of representation for the seed solution. We interpret this result as a further indication of its applicability limitations. © 2016, Springer Science+Business Media New York. Recurso electrónico application/pdf eng Springer New York LLC http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/restrictedAccess Atribución-NoComercial 4.0 Internacional https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991490399&doi=10.1007%2fs10714-016-2144-0&partnerID=40&md5=f0b8018f710fcc5b6674dfae6bb6b7cb Newman–Janis Ansatz in conformastatic spacetimes Artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Conformastatic fields Exact solutions Newman–Janis Ansatz Kerr, R.P., (1963) Phys. Rev. Lett., 11, pp. 237-238 Newman, E.T., Janis, A.I., (1965) J. Math. Phys., 6, pp. 915-917 Newman, E.T., (1965) J. Math. Phys., 6, p. 918 Demianski, M., Newman, E.T., (1966) Bull Acad. Polon. Sci. Set. Math. Astron. Phys., 14, p. 653 Talbot, C.G., (1969) Commun. Math. Phys., 13, p. 45 Demianski, M., (1972) Phys. Lett. A, 42, p. 157 Schiffer, M., Adler, R., Mark, J., Sheffield, C., (1973) J. Math. Phys., 14, pp. 52-56 Finkelstein, R.J., (1975) J. Math. Phys., 16, pp. 1271-1277 Quevedo, H., (1992) Gen. Relativ. Gravit., 24, p. 693 Quevedo, H., (1992) Gen. Relativ. Gravit., 24, p. 799 Herrera, L., Jiménez, J., (1982) J. Math. Phys., 23, p. 2339 Drake, S., Turolla, R., (1997) Class. Quantum Gravity, 14, p. 1883 Ibohal, N., (2005) Gen. Relativ. Gravit., 37, p. 19 Papakostas, T., Phys, J., (2005) Conf. Ser., 8, p. 22 Papakostas, T., Phys, J., (2009) Conf. Ser., 189, p. 012027 Viaggiu, S., (2006) Int. J. Modern Phys. D, 15, p. 1441 Viaggiu, S., (2010) Int. J. Modern Phys. D, 19, p. 1783 Rosquist, K., (1999) Class. Quantum Gravity, 16, p. 1755 Lozanovski, C., Wylleman, L., (2011) Class. Quantum Gravity, 28, p. 075015 Ferraro, R., (2014) Gen. Relativ. Gravit., 46, p. 1705 Hansen, D., Yunes, N., (2013) Phys. Rev. D, 88, p. 104020 Lessner, G., (2008) Gen. Relativ. Gravit., 40, p. 2177 Modesto, L., Nicolini, P., (2010) Phys. Rev. D, 82, p. 104035 Miao, Y., Xue, Z., Zhang, S., (2012) Int. J. Mod. Phys. D, 21, p. 1250017 Caravelli, F., Modesto, L., (2010) Class. Quantum Gravity, 27, p. 245022 Azrag-Ainou, M., (2014) Eur. Phys. J. C, 74, p. 2865 Azrag-Ainou, M., (2014) Phys. Rev. D, 90, p. 064041 Larranaga, A., Cardenas-Avendano, A., Torres, D., (2015) Phys. Lett. B, 743, p. 492 Erbin, H., (2015) Gen. Relativ. Gravit., 47, p. 19 Synge, J., (1960) Relativity: The General Theory, , North-Holland Pub. Co. Interscience Publishers, Amsterdam Gutiérrez-Piñeres, A.C., González, G.A., Quevedo, H., (2013) Phys. Rev. D, 87, p. 044010 Gutiérrez-Piñeres, A.C., Lopez-Monsalvo, C.S., Quevedo, H., (2015) Gen. Relativ. Gravit., 47, p. 1 Gutiérrez-Piñeres, A.C., (2015) Gen. Relativ. Gravit., 47, p. 54 Gutiérrez-Piñeres, A.C., Capistrano, A.J., (2015) Adv. Math. Phys., 15, p. 2015 Stephani, H., Kramer, D., MacCallum, M., Hoenselaers, C., Herlt, E., (2009) Exact Solutions of Einstein’s Field Equations, , Cambridge University Press, Cambridge http://purl.org/coar/access_right/c_16ec http://purl.org/coar/resource_type/c_6501 http://purl.org/coar/version/c_970fb48d4fbd8a85 Publicationmetadata.only