The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.

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Chapter 21, Problem 53Q

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The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.

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A main sequence star of mass 25 M⊙has a luminosity of approximately 80,000 L⊙. a. At what rate DOES MASS VANISH as H is fused to He in the star’s core? Note: When we say “mass vanish '' what we really mean is “gets converted into energy and leaves the star as light”. Note: approximate answer: 3.55 E14 kg/s b. At what rate is H converted into He? To do this you need to take into account that for every kg of hydrogen burned, only 0.7% gets converted into energy while the rest turns into helium. Approximate answer = 5E16 kg/s c. Assuming that only the 10% of the star’s mass in the central regions will get hot enough for fusion, calculate the main sequence lifetime of the star. Put your answer in years, and compare it to the lifetime of the Sun. It should be much, much shorter. Approximate answer: 30 million years.

A Type Ia Supernova is an example of a:

As we have discussed, Sirius B in the Sirius binary system is a white dwarf with MB ∼ 1M , LB ∼ 0.024L ,and rB ∼ 0.0084r . For such a white dwarf, the temperature at the center is estimated to be ∼ 107 K.If Sirius B’s luminosity were due to hydrogen fusion, what is the upper limit of the mass fraction of thehydrogen in such a white dwarf?Step 1: Calculate the observed energy production rate per unit mass (remember luminosity is energy outputper unit time).Step 2: Use the per unit mass energy generation rate of hydrogen fusion (via PP chain) to estimate thepossible hydrogen mass fraction given the condition at the center of the white dwarf.

Answer 2

Question

Chapter 21, Problem 53Q

To determine

To explain:

The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.

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Answer 3

Question

Chapter 21, Problem 53Q

To determine

To explain:

The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.

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Answer 4

Question

Chapter 21, Problem 53Q

To determine

To explain:

The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.

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Answer 5

Chapter 21, Problem 53Q

To determine

To explain:

The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.

Answer 6

Chapter 21, Problem 53Q

To determine

To explain:

The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.

Answer 7

Chapter 21, Problem 53Q

To determine

To explain:

The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.

Answer 8

Expert Solution & Answer

Answer 9

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Answer 11

Ch. 21 - Prob. 1Q Ch. 21 - Prob. 2Q Ch. 21 - Prob. 3Q Ch. 21 - Prob. 4Q Ch. 21 - Prob. 5Q Ch. 21 - Prob. 6Q Ch. 21 - Prob. 7Q Ch. 21 - Prob. 8Q Ch. 21 - Prob. 9Q Ch. 21 - Prob. 10Q

The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.

Concept explainers

To explain:

The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.

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Chapter 21 Solutions

The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.

Concept explainers

To explain: The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.

Want to see the full answer?

Chapter 21 Solutions

To explain:

The jets created when a black hole was formed at the center of a progenitor star, were able to escape easily into space. This is indicated by the lack of Hydrogen and Helium lines in a Type Ic supernova.