Static Spherically Symmetric Black Holes in Weak <i>f</i>(<i>T</i>)-Gravity
With the advent of gravitational wave astronomy and first pictures of the “shadow” of the central black hole of our milky way, theoretical analyses of black holes (and compact objects mimicking them sufficiently closely) have become more important than ever. The near future promises more and more de...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/7/5/153 |
| _version_ | 1797533722760708096 |
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| author | Christian Pfeifer Sebastian Schuster |
| author_facet | Christian Pfeifer Sebastian Schuster |
| author_sort | Christian Pfeifer |
| collection | DOAJ |
| description | With the advent of gravitational wave astronomy and first pictures of the “shadow” of the central black hole of our milky way, theoretical analyses of black holes (and compact objects mimicking them sufficiently closely) have become more important than ever. The near future promises more and more detailed information about the observable black holes and black hole candidates. This information could lead to important advances on constraints on or evidence for modifications of general relativity. More precisely, we are studying the influence of weak teleparallel perturbations on general relativistic vacuum spacetime geometries in spherical symmetry. We find the most general family of spherically symmetric, static vacuum solutions of the theory, which are candidates for describing teleparallel black holes which emerge as perturbations to the Schwarzschild black hole. We compare our findings to results on black hole or static, spherically symmetric solutions in teleparallel gravity discussed in the literature, by comparing the predictions for classical observables such as the photon sphere, the perihelion shift, the light deflection, and the Shapiro delay. On the basis of these observables, we demonstrate that among the solutions we found, there exist spacetime geometries that lead to much weaker bounds on teleparallel gravity than those found earlier. Finally, we move on to a discussion of how the teleparallel perturbations influence the Hawking evaporation in these spacetimes. |
| first_indexed | 2024-03-10T11:19:38Z |
| format | Article |
| id | doaj.art-07bd5c0897b545b3b77322c5a6c1f167 |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-03-10T11:19:38Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-07bd5c0897b545b3b77322c5a6c1f1672023-11-21T20:09:01ZengMDPI AGUniverse2218-19972021-05-017515310.3390/universe7050153Static Spherically Symmetric Black Holes in Weak <i>f</i>(<i>T</i>)-GravityChristian Pfeifer0Sebastian Schuster1Center of Applied Space Technology and Microgravity—ZARM, University of Bremen, Am Fallturm 2, 28359 Bremen, GermanyÚstav Teoretické Fyziky, Matematicko-Fyzikální Fakulta, Univerzita Karlova, V Holešovičkách 2, 180 00 Praha 8, Czech RepublicWith the advent of gravitational wave astronomy and first pictures of the “shadow” of the central black hole of our milky way, theoretical analyses of black holes (and compact objects mimicking them sufficiently closely) have become more important than ever. The near future promises more and more detailed information about the observable black holes and black hole candidates. This information could lead to important advances on constraints on or evidence for modifications of general relativity. More precisely, we are studying the influence of weak teleparallel perturbations on general relativistic vacuum spacetime geometries in spherical symmetry. We find the most general family of spherically symmetric, static vacuum solutions of the theory, which are candidates for describing teleparallel black holes which emerge as perturbations to the Schwarzschild black hole. We compare our findings to results on black hole or static, spherically symmetric solutions in teleparallel gravity discussed in the literature, by comparing the predictions for classical observables such as the photon sphere, the perihelion shift, the light deflection, and the Shapiro delay. On the basis of these observables, we demonstrate that among the solutions we found, there exist spacetime geometries that lead to much weaker bounds on teleparallel gravity than those found earlier. Finally, we move on to a discussion of how the teleparallel perturbations influence the Hawking evaporation in these spacetimes.https://www.mdpi.com/2218-1997/7/5/153teleparallel gravityblack holeshorizonBirkhoff theoremphoton sphereShapiro delay |
| spellingShingle | Christian Pfeifer Sebastian Schuster Static Spherically Symmetric Black Holes in Weak <i>f</i>(<i>T</i>)-Gravity Universe teleparallel gravity black holes horizon Birkhoff theorem photon sphere Shapiro delay |
| title | Static Spherically Symmetric Black Holes in Weak <i>f</i>(<i>T</i>)-Gravity |
| title_full | Static Spherically Symmetric Black Holes in Weak <i>f</i>(<i>T</i>)-Gravity |
| title_fullStr | Static Spherically Symmetric Black Holes in Weak <i>f</i>(<i>T</i>)-Gravity |
| title_full_unstemmed | Static Spherically Symmetric Black Holes in Weak <i>f</i>(<i>T</i>)-Gravity |
| title_short | Static Spherically Symmetric Black Holes in Weak <i>f</i>(<i>T</i>)-Gravity |
| title_sort | static spherically symmetric black holes in weak i f i i t i gravity |
| topic | teleparallel gravity black holes horizon Birkhoff theorem photon sphere Shapiro delay |
| url | https://www.mdpi.com/2218-1997/7/5/153 |
| work_keys_str_mv | AT christianpfeifer staticsphericallysymmetricblackholesinweakifiitigravity AT sebastianschuster staticsphericallysymmetricblackholesinweakifiitigravity |