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Supernova- Part 3

Supernova- Part 3



This Is a presentation about supernova. We are going to experience in few weeks

This Is a presentation about supernova. We are going to experience in few weeks

part 3



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    Supernova- Part 3 Supernova- Part 3 Presentation Transcript

    • Supernova R. Sri Madhavi
    • What is Supernova?
      • Supernova is a celestial body
      • Supernova is actually a stellar explosion
      • The term, “Supernova” was coined in 1926 by a Swedish astrophysicist, Fritz Zwicky
    • What is the meaning of Supernova?
      • A very bright new star shining in the celestial sphere
    • How often does a Supernova occur?
      • About once in 50 years
      • It happens in the galaxy
      • Its size is about the size of the milky way
    • What is the importance of Supernova?
      • Supernova plays a significant role in enriching the interstellar medium with higher mass elements
      • the expanding shock waves from supernova explosions can trigger the formation of new stars
    • Types of Supernova
      • There are two common types of Supernova:
      • Ia
      • II
    • Type Ia Supernova
      • This supernova is the result of the activity of a couple of stars; one of which is a type of star known as “White Dwarf”
      • White dwarf is a star rich in carbon and oxygen.
    • Type Ia Supernova
      • The “White Dwarf” absorbs matter from the companion and therefore its mass increases,
      • When the density of the core of the White Dwarf reaches a critical density of 2 x 10 9 g/cm 3
      • carbon and oxygen undergo fusion uncontrollably, and therefore the star explodes
    • Type II Supernova
      • This occurs in a star which is in the verge of death
      • At this point of time, there is no fuel in the star to burn, and there is so much accumulation of iron inside the star.
      • Due to the weight of iron, the star fragments and collapses
    • Mechanism of Supernova Ia
    • Mechanism of supernova: Onion Layers
    • Mechanism of Supernova
    • Other Types
      • Other types of Supernova are:
      • Ib
      • Ic
      • IIP IIL
    • What happens when Supernova occurs? - 1
      • A supernova can radiate as much energy as the Sun could emit over its life span.
    • What happens when Supernova occurs? -2
      • The explosion expels star's material at a velocity of up to 30,000 km/s (a tenth the speed of light )
    • What happens when Supernova occurs? -3
      • The material coming out of a Supernova produces a shock wave into the surrounding interstellar medium .
      • This shock wave sweeps up an expanding shell of gas and dust called a supernova remnant .