Aspects of the dyonic Kerr-Sen-
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 black hole and its ultraspinning version

Wu, Di; Wu, Shuang-Qing; Wu, Puxun; Yu, Hongwei

doi:10.1103/physrevd.103.044014

Cited by 22 publications

(17 citation statements)

References 45 publications

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“…Thus, it provides the first counter-example to this inequality, and such a black hole is dubbed as "superentropic". Up to date, a lot of new ultra-spinning black hole solutions [24][25][26][27][28][29][30] have been obtained from the known common rotating AdS black holes. In addition, various aspects of the ultra-spinning black holes, including thermodynamical properties [19,24,[26][27][28][31][32][33][34], horizon geometry [20,24,26], Kerr/CFT correspondence [25][26][27], geodesic motion [35] and null hypersurface caustics [36][37][38], etc., have been widely explored.…”

Section: Jhep11(2021)031mentioning

confidence: 99%

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Ultra-spinning Chow’s black holes in six-dimensional gauged supergravity and their properties

2021

J. High Energ. Phys.

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By taking the ultra-spinning limit as a simple solution-generating trick, a novel class of ultra-spinning charged black hole solutions has been constructed from Chow’s rotating charged black hole with two equal-charge parameters in six-dimensional $$ \mathcal{N} $$ N = 4 gauged supergravity theory. We investigate their thermodynamical properties and then demonstrate that all thermodynamical quantities completely obey both the differential first law and the Bekenstein-Smarr mass formula. For the six-dimensional ultra-spinning Chow’s black hole with only one rotation parameter, we show that it does not always obey the reverse isoperimetric inequality, thus it can be either sub-entropic or super-entropic, depending upon the ranges of the mass parameter and especially the charge parameter. This property is obviously different from that of the six-dimensional singly-rotating Kerr-AdS super-entropic black hole, which always strictly violates the RII. For the six-dimensional doubly-rotating Chow’s black hole but ultra-spinning only along one spatial axis, we point out that it may also obey or violate the RII, and can be either super-entropic or sub-entropic in general.

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Section: Jhep11(2021)031mentioning

confidence: 99%

“…This character is very similar to that of the ultra-spinning Kerr-Sen-AdS 4 black hole previously studied in refs. [29,30].…”

Section: Jhep11(2021)031mentioning

confidence: 99%

Ultra-spinning Chow’s black holes in six-dimensional gauged supergravity and their properties

2021

J. High Energ. Phys.

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“…The singly rotating Kerr-AdS ultaspinning black holes in arbitrary dimensions as well as singly rotating ultraspinning black hole of five-dimensional minimal gauged supergravity theory satisfy the relation R < 1 [9]. However some new ultraspinning AdS black holes [9,13,14] violates the RII only in some ranges of values of the solution parameters. Thus, one naturally has a question: what causes this new family of ultraspinning black holes to be superentropic?…”

Section: Introductionmentioning

confidence: 96%

“…The superentropic black hole is the first example violating the RII. Soon afterward, a lot of new ultraspinning AdS black hole solutions [9][10][11][12][13][14] from some known rotating AdS black holes have been generated successfully. The singly rotating Kerr-AdS ultaspinning black holes in arbitrary dimensions as well as singly rotating ultraspinning black hole of five-dimensional minimal gauged supergravity theory satisfy the relation R < 1 [9].…”

Section: Introductionmentioning

confidence: 99%

Null hypersurface caustics for high dimensional superentropic black holes

Wu,

2021

Preprint

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“…Since the ultraspinning black hole exceeds the maximum entropy bound [21][22][23], it is dubbed "superentropic". Soon afterward, a lot of new ultraspinning AdS black hole solutions [24][25][26][27][28][29][30] have been generated successfully from the corresponding known rotating AdS black holes. And various aspects of the ultraspinning black holes, including thermodynamic properties [20,[24][25][26][27][30][31][32][33][34], horizon geometry [21,24,25], Kerr/CFT correspondence [25,26,35] and geodesic motion [36], etc, have been explored widely.…”

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confidence: 99%

Shadowless rapidly rotating yet not ultraspinning Kerr- AdS4 and Kerr-Newman- AdS4 black holes

2021

Phys. Rev. D

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We show that the Kerr-(Newman)-AdS 4 black hole will be shadowless if its rotation parameter is larger than a critical value a c which is not necessarily equal to the AdS radius. This is because the null hypersurface caustics (NHC) appears both inside the Cauchy horizon and outside the event horizon for the black hole with the rotation parameter beyond the critical value, and the NHC outside the event horizon scatters diffusely the light reaching it. Our studies also further confirm that whether an ultraspinning black hole is super-entropic or not is unrelated to the existence of the NHC outside the event horizon.

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Aspects of the dyonic Kerr-Sen- AdS4 black hole and its ultraspinning version

Cited by 22 publications

References 45 publications

Ultra-spinning Chow’s black holes in six-dimensional gauged supergravity and their properties

Ultra-spinning Chow’s black holes in six-dimensional gauged supergravity and their properties

Null hypersurface caustics for high dimensional superentropic black holes

Shadowless rapidly rotating yet not ultraspinning Kerr- AdS4 and Kerr-Newman- AdS4 black holes

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