| LDR | ·····naa##22·····5a#4500 |
| 001 | 001783 |
| 005 | 20210930132021.0 |
| 008 | 210222s2021####xx############000#0#und#d |
| 245 | 10 | $a Black hole in asymmetric cosmological bounce / $c Daniela Pérez, Santiago E. Perez Bergliaffa, Gustavo E. Romero. |
| 490 | 0# | $a Trabajos publicados del IAR ; $v no. 1593 |
| 520 | ## | $a We determine the causal structure of the McVittie spacetime for a cosmological model with an asymmetric bounce. The analysis includes the computation of trapping horizons; regular, trapped, and antitrapped regions; and the integration of the trajectories of radial null geodesics before, during, and after the bounce. We find a trapped region since the beginning of the contracting phase up to shortly before the bounce, thus showing the existence of a black hole. When the universe reaches a certain minimum scale in the contracting phase, the trapping horizons disappear, and the central singularity becomes naked. These results suggest that neither a contracting nor an expanding universe can accommodate a black hole at all times. |
| 773 | 0# | $7 ||as $t Astronomische Nachrichten $d Wiley $x 1521-3994 $g Vol. (2021), p. |
| 100 | 1# | $a Pérez, D. $q (Daniela) |
| 700 | 1# | $a Pérez-Bergliaffa, S. E. $q (Santiago Esteban) |
| 700 | 1# | $a Romero, G. E. $q (Gustavo Esteban) |
| 653 | ## | $a Black holes. |
| 653 | ## | $a Cosmology. |
| 653 | ## | $a General Relativity. |
| 040 | ## | $a AR-BaBIR |
| 856 | ## | $u https://doi.org/10.1002/asna.202113883 $y DOI |
| 856 | ## | $u https://www.iar.unlp.edu.ar/biblio/htdocs/artic/contri/1593.pdf $y PDF |
| 856 | ## | $u https://www.iar.unlp.edu.ar/biblio/htdocs/artic/contri/1594.pdf $y PDF |