Why did astronomers conclude that pulsars actually could not be pulsating stars?
Q: Stars begin their life cycle in a O black hole O nebula O nova O supernova
A: Answer:) star begin their life cycle in a nebula
Q: How does the lighthouse model explain pulsars? in two sentences.
A: Pulsars are spinning neutron stars that emit beams of radiation from their magnetic poles
Q: How can a black hole emit X-rays?
A: Black holes are regions of high gravity in spacetime. Once a black hole is formed it will start…
Q: The expanding bubble of hot gas shown in the figure, which has been inflated by the light from a…
A:
Q: Why is it possible for repeated nova explosions to occur in the same binary system?
A: A binary star system is one in which two stars are bound to each other through gravity. They will…
Q: In binary star systems where a main-sequence star is transferring mass to a white dwarf star, which…
A: Required : The correct option
Q: A pulsating variable star with a period of 10 days would be a Cepheid having an absolute magnitude…
A: Pulsating variable star are made by expansion and contractions in the outer layers of any stars. Due…
Q: A cepheid star is located at a distance of 18.7kpc from the Earth and has an apparent visual…
A: Step 1:Step 2:
Q: If the accretion disk around a neutron star has a radius of 2 × 105 km, what is the orbital velocity…
A: Neutron stars are formed when massive stars collapse under their own gravity. They are very…
Q: How does the presence of degenerate matter in a star trigger the helium flash?
A: As per the Pauli Exclusion Principle not more than two electrons inside an atom can have the same…
Q: the book's example of the Schwarzchild radius of the supermassive black hole Sag A* with a mass of…
A:
Q: What is the escape velocity at the surface of a typical neutron star?
A: In celestial mechanics, the escape velocity is defined as the minimum velocity required by a…
Q: Why black holes are difficult to observe directly?
A: In supernova the collapse of massive stars core form a black hole. In space , a Black hole is a…
Q: If the accretion disk around a neutron star has a radius of 8 ✕ 105 km, what is the orbital velocity…
A: Given Data: The radius of the neutron star is r = 8 x 105 km. As we know that the mass of the…
Q: What characterizes a star of spectral-type A in the visible part of the spectrum? Strong lines…
A: Spectral type A has wavelength ranging from 290-390 nm. They have very strong hydrogen lines.
Q: Why haven't we detected any Primordial black holes?
A: Primordial black holes or PBH are black holes that formed soon after the birth of the universe. The…
Q: Why do bigger stars burn out quicker(have a shorter lifespan
A:
Q: f a star is to eventually form a stellar black hole at any point in its life cycle, what must…
A: a star spends most of its lifetime as a main-sequence star. when it consumes all of its hydrogen…
Q: What is the orbital period (in s) of a bit of matter in an accretion disk that is located 6 ✕ 105 km…
A: Write the given values with the suitable variables. r=6×105 km=6×108 mM=99Mo=992×1030 kg=198×1030 kg…
Q: If the accretion disk around a neutron star has a radius of 8 ✕ 105 km, what is the orbital velocity…
A:
Q: How do black holes form?
A:
Q: What characteristics must a binary star have to be a good candidate for a black hole? Why is each of…
A: The characteristic must a binary star posses for it to be a good candidate for black hole is, From…
Q: What would happen if you were to jump feet first into a black hole?
A: If we jumped in feet first into a blackhole, we would be torn into pieces via the process of…
Q: and is 10^16m distant from us, what would we measure its brightness to be? If we then moved that…
A:
Q: How can a black hole be massive but not big?
A: A blackhole is a region in space which have an extremely high gravitational field so that even light…
Q: What happens to a White Dwarf's radius if a little mass is added? What happens if a companion star…
A:
Q: Most stars exist as a binary system fission reactor quasar…
A:
Q: Explain how pulsars (highly compact objects that periodically emit radiation) are formed and write…
A: The pulsars are commonly known as rotating neutron stars. A neutron star is the last stage of a…
Q: when we on Earth see a pulsar, why does it seem to blink on and off?
A: Most nucleon stars square measure ascertained as pulsars. Pulsars square measure rotating nucleon…
Q: What is the difference between type I and type II supernovae
A: To determine Difference between type I and type II supernovae
Q: Why do you expect neutron stars to spin rapidly?
A: Neutron stars are formed when stars with 4 to 8 solar mass die. When such a star runs out of fuel…
Q: Radio telescopes are an essential tool for modern astrophysics. They played a crucial role in…
A: Radio telescopes are an essential tool for modern astrophysics. They played a crucial role in…
Q: Radio telescopes are an essential tool for modern astrophysics. They played a crucial role in…
A: A pulsar is a compact star, including neutron star and white dwarfs, which is highly magnetized and…
Q: Where do the γ bursts come from?
A: Gamma-ray bursts are one of the top unsolved mysteries in astrophysics, alongside such burning…
Q: What is the Schwarzschild radius of a star with a mass of z × 109 MSun? The answer is in 106m. So if…
A:
Q: Which of the following can a black hole not "eat" or consume? another black hole O a planet O black…
A: A black hole in simple terms is a region of very very strong gravity which is unimaginable. It is…
Q: Why do millisecond pulsars spin so fast?
A: Millisecond Pulsars are formed when accretion of matter takes place from a companion star to an old…
Q: Why would astronomers naturally assume that the first discovered millisecond pulsar was relatively…
A: When a massive star collapses the gravitational force is so strong the protons and electrons inside…
Q: Explain why massive stars evolve faster?
A: Stars are formed in the interstellar medium. The interstellar medium contains hydrogen and helium…
Q: mass
A: The evolution is affected by mass exchange in the binary. The higher mass Star use to be the lower…
Q: Five astronauts (A - E) are watching a star collapse to form a black hole. Which of the flight plans…
A: Required: Which observers are moving faster than light.
Q: A star collapses onto a neutron star. If its original radius is 7x105 km, by what factor will its…
A:
Q: Chart the evolutionary process of a high mass star on the H–R diagram from ZAMS to death.
A: Required to draw: The evolution of high mass stars from Zero Age Main Sequence (ZAMS) to Death: We…
Q: What keeps a neutron star from collapsing into a black hole?
A: The neutron doesnot collapse into the blackhole because of Pauli's exclusion principle.
Q: How does a white dwarf differ from a neutron star? (Select all that apply.) A white dwarf is less…
A:
Q: What does the short length of pulsar pulses tell you?
A: Pulsars are highly magnetized neutron stars. They emit electromagnetic radiation from their poles.…
Step by step
Solved in 3 steps
