Connections between the Shadow Radius and the Quasinormal Modes of Kerr-Sen Black Hole

نویسندگان

چکیده

The correspondence between the shadow radius and real part of quasinormal modes (QNMs) a Kerr–Sen black hole is studied. By using equation angular separation constant QNMs, expression QNMs related to established in eikonal limit. We found that, our formula can reduce previous result Kerr when Kerr-Sen parameter b sets zero.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Black Hole Determinants and Quasinormal Modes

We derive an expression for functional determinants in thermal spacetimes as a product over the corresponding quasinormal modes. As simple applications we give efficient computations of scalar determinants in thermal AdS, BTZ black hole and de Sitter spacetimes. We emphasize the conceptual utility of our formula for discussing ‘1/N ’ corrections to strongly coupled field theories via the hologr...

متن کامل

Neutrino Quasinormal Modes of a Kerr-Newman-de Sitter Black Hole

Using the Pöshl-Teller approximation, we evaluate the neutrino quasinormal modes (QNMs) of a Kerr-Newman-de Sitter black hole. The result shows that for a Kerr-Newman-de Sitter black hole, massless neutrino perturbation of large Λ, positive m and small value of n will decay slowly. PACS number(s): 04.70.-s, 04.50.+h, 11.15.-q, 11.25.Hf e-mail: ygshen @center.shao.ac.cn

متن کامل

Neutrino quasinormal modes of the Reissner-Nordström black hole

Abstract: The neutrino quasinormal modes of the Reissner-Nordström (RN) black hole are investigated using continued fraction approach. We find, for large angular quantum number, that the quasinormal frequencies become evenly spaced and the spacing of the real part depends on the charge of the black hole and that of the imaginary part is zero. We then find that the quasinormal frequencies in the...

متن کامل

Considerations on the excitation of black hole quasinormal modes

We provide some considerations on the excitation of black hole quasinormal modes (QNMs) in different physical scenarios. Considering a simple model in which a stream of particles accretes onto a black hole, we show that resonant QNM excitation by hyperaccretion requires a significant amount of fine-tuning, and is quite unlikely to occur in nature. Then we summarize and discuss present estimates...

متن کامل

Quasinormal modes of the electrically charged dilaton black hole

We sketch the results of calculations of the quasinormal frequencies of the electrically charged dilaton black hole. At the earlier phase of evaporation (Q is less than 0.7−0.8M), the dilaton black hole " rings " with the complex frequencies which differ negligibly from those of the Reissner-Nordström black hole. The spectrum of the frequencies weakly depends upon the dilaton coupling. When per...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Universe

سال: 2022

ISSN: ['2218-1997']

DOI: https://doi.org/10.3390/universe8110604