W e l c o m e

Group Members

❑B.M Irfan-Ul-Furqan Mustafa

❑Muhammad Ahmad

❑Abdur Rafay

Groups Members

contents

❑Introduction❑History of Ideas about Black Holes❑Formation❑Characteristics of Black Hole❑Growth of Black Hole❑Size and Amount❑Gravitational Pull❑Falling a Body In Black Hole❑Conclusion

Introduction

❑ John Wheeler in 1969

❑ Black hole - a region in the space where the gravitational

pull is so strong that neither substance nor light can leave

this area.

History of Ideas about Black Holes

❑ In the 18th century John Michell and

Pierre-Simon Laplace

❑ In 1915 Albert Einstein

❑ Karl Schwarzschild (1916)

❑ Robert Oppenheimer and Hartland Snyder (1939)

❑ Stephen Hawking (Present)▪ The Black Hole War (Book)

Formation

❑What is Star ?

- Cloud Of Gases & Elements

- Gasses

- Hydrogen

- Helium

- Control Hydrogen Fusion

Life Cycle Of a Star

Life Cycle Of a Star

• f

Supernova

❑Star Collapses

– Supernova– Black Hole

– Neutron Star

Parts Of Black Hole

Parts of Black Hole

❑Event Horizon

– Outer Horizon

– Inner Horizon

❑Singularity

❑Ergosphere

Characteristics of Black Hole

❑ Although black holes come in a variety of masses and sizes, their structures are all alike.

❑ A black hole's entire mass is concentrated in an almost infinitely small and dense point called a singularity.

❑ Cannot be Captured by Camera.

❑ It is Impossible for us to know How Big a Black Hole is .

❑ Black holes can Swallow anything.

❑We Can Only See BH By Using IR Telescope.

Growth of Black Hole

❑ Could grow as massive as 50 billion suns

❑ Feed Gasses And Dust.

❑ Feed a Whole Star.

❑ Merging into each Other.

Size And Amount❑ Mass > Sun

❑ Size

❑ Lie at the hearts of galaxy (27,000 light-years away.)

Gravitational Pull

Falling a Body In Black Hole

❑Time Freeze

❑Gravitational Effect

❑Death

– Quick Death

– Very Quick Death

Researches

❑Largest Black Hole

– S5 0014+813 (Name)

– 40 Billion Times mass of The SUN. (Mass)

(40000000000)

– 236.7 Billion Km (Diameter)

Death Of Black Hole

❑Hawking Radiation

– Formation

– Process

– Death Process of BH

Questions

❑ Star

❑ Black Hole

❑ Hawking Radiation

Thanks For Your

ATTENTION