Shadows of R-charged black holes in AdS5

Sekhmani, Yassine; Gogoi, Dhruba Jyoti; Koussour, M.; Myrzakulov, Ratbay; Rayimbaev, Javlon

doi:10.1016/j.dark.2024.101442

Cited by 7 publications

(2 citation statements)

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“…This section delves into the fascinating and complex phenomena of black hole shadows and their associated emission rates, shedding light on the mysterious nature of these cosmic behemoths. Black holes, characterized by their incredibly powerful gravitational pull, create an environment where even light cannot escape once it crosses the event horizon [72][73][74][75]. This unique property gives rise to what is known as the black hole shadow, a darkened region in space-time that envelops the event horizon.…”

Section: Optical Properties Of the Black Holementioning

confidence: 99%

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Technical Efficiency of Organic Tea Growers of Assam, India: A study in Dibrugarh District

Gogoi¹,

Buragohain

Gogoi³

2022

EEA

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Organic tea cultivation is a most emerging farming activity in recent years. Assam is only the state of India, where the highest tea is produced. Organic tea farming is a new concept for the state Assam. The study focuses on to estimate the technical efficiency level of organic tea growers. The Stochastic Frontier Analysis (SFA) is used to estimate the efficiency level of the growers by conducting a survey in Dibrugarh district of Assam, where the highest organic tea growers are concentrated. The study found- Mean technical efficiency of organic tea growers is 0.91. The variables organic fertilizer, organic pesticide, manure, machine and land area under tea cultivation are found statistically significant. On the other hand the variable labour man days found insignificant result with output.

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Section: Optical Properties Of the Black Holementioning

confidence: 99%

“…Equations ( 59) and ( 60) establish the connection between the celestial coordinates and the impact parameters for observers positioned at inclination angles θ 0 = π/2 and θ 0 = 0, respectively [79]. These equations are fundamental for extracting information regarding the shadows of black holes [72][73][74].…”

Section: A Shadow Radiusmentioning

confidence: 99%