Thin Accretion Disk Around Bardeen Black Hole Surrounded by Perfect Fluid Dark Matter

Cui, Dan-Dan; Feng, Haiyuan

doi:10.3390/universe12010008

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Thin Accretion Disk Around Bardeen Black Hole Surrounded by Perfect Fluid Dark Matter

by

Dan-Dan Cui

and

Haiyuan Feng

^*

School of Physics and Electronic Engineering, Shanxi Normal University, Taiyuan 030031, China

^*

Author to whom correspondence should be addressed.

Universe 2026, 12(1), 8; https://doi.org/10.3390/universe12010008 (registering DOI)

Submission received: 11 November 2025 / Revised: 18 December 2025 / Accepted: 25 December 2025 / Published: 29 December 2025

(This article belongs to the Special Issue New Progress of Black Hole Accretion Disk)

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Abstract

We investigate the thin accretion disk around Bardeen black hole (BH) surrounded by perfect fluid dark matter (PFDM), focusing on how the magnetic charge g and dark matter (DM) parameter b affect its radiative properties. The results show that increasing g slightly enhances the energy flux, radiation temperature, luminosity, and efficiency, while shifting the innermost stable circular orbit (

r_{isco}

) inward. Additionally, the influence of b is found to be dominant, making it a key parameter in distinguishing PFDM-surrounded Bardeen BH from their Schwarzschild counterparts.

Keywords: Bardeen black hole surrounded by perfect fluid dark matter; thin accretion disk

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MDPI and ACS Style

Cui, D.-D.; Feng, H. Thin Accretion Disk Around Bardeen Black Hole Surrounded by Perfect Fluid Dark Matter. Universe 2026, 12, 8. https://doi.org/10.3390/universe12010008

AMA Style

Cui D-D, Feng H. Thin Accretion Disk Around Bardeen Black Hole Surrounded by Perfect Fluid Dark Matter. Universe. 2026; 12(1):8. https://doi.org/10.3390/universe12010008

Chicago/Turabian Style

Cui, Dan-Dan, and Haiyuan Feng. 2026. "Thin Accretion Disk Around Bardeen Black Hole Surrounded by Perfect Fluid Dark Matter" Universe 12, no. 1: 8. https://doi.org/10.3390/universe12010008

APA Style

Cui, D.-D., & Feng, H. (2026). Thin Accretion Disk Around Bardeen Black Hole Surrounded by Perfect Fluid Dark Matter. Universe, 12(1), 8. https://doi.org/10.3390/universe12010008

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Thin Accretion Disk Around Bardeen Black Hole Surrounded by Perfect Fluid Dark Matter

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