Overspinning Kerr-MOG black holes by test fields and the third law of black hole dynamics

Name: Overspinning Kerr-MOG black holes by test fields and the third law of black hole dynamics
Author: Düztaş, Koray

İsim	Overspinning Kerr-MOG black holes by test fields and the third law of black hole dynamics
Yazar	Düztaş, Koray
Basım Tarihi:	2020-01-11
Basım Yeri	- Springer Nature
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1434-6044
Kayıt Numarası	3417588d-9e66-468e-a1a7-08997829070c
Lokasyon	Natural and Mathematical Sciences
Tarih	2020-01-11
Örnek Metin	We evaluate the validity of the weak form of the cosmic censorship conjecture and the third law of black hole dynamics for Kerr-MOG black holes interacting with test scalar fields. Ignoring backreaction effects, we first show that both extremal and nearly extremal Kerr-MOG black holes can be overspun into naked singularities by test fields with a frequency slightly above the superradiance limit. In addition, nearly extremal Kerr-MOG black holes can be continuously driven to extremality by test fields. Next, we employ backreaction effects based on the argument that the angular velocity of the event horizon increases before the absorption of the test field. Incorporating the backreaction effects, we derive that the weak form of the cosmic censorship and the third law are both valid for Kerr-MOG black holes with a modification parameter alpha less than or similar to 0.03, which includes the Kerr case with alpha=0.
DOI	10.1140/epjc/s10052-020-7607-5
Cilt	80

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Overspinning Kerr-MOG black holes by test fields and the third law of black hole dynamics

Yazar Düztaş, Koray

Basım Tarihi 2020-01-11

Basım Yeri - Springer Nature

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1434-6044

Kayıt Numarası 3417588d-9e66-468e-a1a7-08997829070c

Lokasyon Natural and Mathematical Sciences

Tarih 2020-01-11

Örnek Metin We evaluate the validity of the weak form of the cosmic censorship conjecture and the third law of black hole dynamics for Kerr-MOG black holes interacting with test scalar fields. Ignoring backreaction effects, we first show that both extremal and nearly extremal Kerr-MOG black holes can be overspun into naked singularities by test fields with a frequency slightly above the superradiance limit. In addition, nearly extremal Kerr-MOG black holes can be continuously driven to extremality by test fields. Next, we employ backreaction effects based on the argument that the angular velocity of the event horizon increases before the absorption of the test field. Incorporating the backreaction effects, we derive that the weak form of the cosmic censorship and the third law are both valid for Kerr-MOG black holes with a modification parameter alpha less than or similar to 0.03, which includes the Kerr case with alpha=0.

DOI 10.1140/epjc/s10052-020-7607-5

Cilt 80