Newly formed neutron stars have extremely strong magnetic fields. (T/F)
Q: Taking the distance to the Crab pulsar to be 2000 pc and the bolometric magnitude at maximum…
A: The Crab Pulsar is described as a young neutron star. The star is the central star in the Crab…
Q: Life on Earth wouldn't be possible without supernovae. Why?
A:
Q: Calculate the rate of mass loss through Hawking radiation for Sagittarius A.
A: Black holes are regions of high gravitational force from which even light cannot escape. Once…
Q: true or false A supernova core with a mass 2X that of the Sun produces a Black Hole
A: The Sun need to be concerning 20X additional large to finish its life as a black hole. Stars that…
Q: Although neutron star mergers have been observed, what is the source of most of the gravity waves…
A: Gravitational waves can be generated by many different events such as the merger of Binary Neutron…
Q: Calculate the expected life span of a 16 solar mass star
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: A nova is an event, not a stellar object. (True or false)
A: It is True. A nova is a transient astronomical event that causes the sudden appearance of a bright,…
Q: Determine the radius of a neutron star with a mass of 2 solar masses.
A: Neutron stars are formed when massive stars die. A star is formed due to the balance between…
Q: true or false White Dwarfs generate energy through low grade thermonuclear reactions in their…
A: When a star exhausted all nuclear fuel it becomes a white dwarf. The mass of the white dwarf can…
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: e la supernova?
A: To trigger a type la supernova one of the two stars must be a white dwarf . The other star is often…
Q: Although visible light cannot escape from a black hole, high- energy radiation, like gamma rays,…
A: Black holes are formed when massive stars collapse under its own gravity. The gravity of a black…
Q: Explain how supernovae produce neutron stars and pulsars.
A: Neutron stars are city size stellar objects with a mass of about 1.4 times that of the Sun.When…
Q: Why do you expect neutron stars to have a powerful magnetic field?
A: Neutron stars are small stellar objects with a mass of about 1.4 solar mass. They are formed when…
Q: How many neutrons are in a 2.8-solar-mass neutron star? Assume the star’s mass is entirely neutrons…
A:
Q: If the inner accretion disk around a black hole has a temperature of 1,000,000 K, at what wavelength…
A: Black holes are regions of large gravitational force in spacetime. The gravitational force is so…
Q: It takes less and less time to fuse heavier and heavier elements inside a high-mass star. (T/F)
A: Stars are powered by fusion reactions. It is the process by which lighter elements combine to form…
Q: The hydrogen Balmer line Hβ has a wavelength of 486.1 nm. It is shifted to 579.8 nm in a quasar's…
A: Redshift is defined as the change in the wavelength due to apparent motion in the quasar spectrum.
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: A neutron star has a radius of 11.5 km and a mass of about 1.35M Calculate the density of this…
A:
Q: In a nova, why is the shell of hydrogen on the white dwarf consumed explosively rather than…
A: White stars are formed when stars that do not have enough mass to form neutron stars or black holes…
Q: Why do you expect neutron stars to have a more powerful magnetic field than a white dwarf?
A: A neutron star consists of ions along with neutrons which are responsible for radiation in the form…
Q: What would your mass be if you were composed entirely of neutron star material of density 3 × 1010…
A: Neutron stars are formed when massive stars die due to gravitational collapse. The gravity will fuse…
Q: Observations of quasars have shown us that many are extremely _________, emitting more energy than…
A: Required : Fill in the gaps.
Q: Suppose that a neutron star has a radius of 10 km and a temperature of 1,000,000 K. How luminous is…
A: The luminosity of a star is defined as the total amount of electromagnetic energy released by a star…
Q: A coil with an inductance of 1.6 H and a resistance of 8.0 Q is suddenly connected to an ideal…
A: An inductor connected in a circuit opposes the flow of current in a circuit. Thus, when the circuit…
Q: Pulsating variable stars are normal stars experiencing brief period instability lasting only a few…
A: A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
Q: Calculate the redshift caused by a neutron star with a radius of 11 km and mass of 5.2 x 1030 kg.
A: As per general relativity when a photon leaves a gravitational well its wavelength will increase…
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: 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 surface gravity on the surface of White Dwarf of 1 Solar Mass? What about a Neutron Star…
A: Mass of white dwarf = m =1 solar massRadius of White Dwarf = rWDRadius of Neutron star = rNSRadius…
Q: Why did astronomers conclude that pulsars actually could not be pulsating stars?
A: Pulsars are defined as highly magnetized rotating neutron stars. They are capable of releasing beams…
Q: Type 1a supernovae are not: The result of exceeding the Chandrasehkar limit. Produced…
A: Required :: Type 1a supernovae are not:
Q: Why do old stars have less metal compared to new ones?
A: As per the Big Bang theory, the universe expanded from an initial high-density state. In the…
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: Why would a neutron star have such a strong magnetic field?
A: Neutron star is basically consists of about 80% of neutrons, 10% of electrons and 10% of protons.…
Q: All millisecond pulsars are now, or once were, members of b nary star systems. (T/F)
A:
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- What is the Eddington luminosity of a quasar with a mass of 1 billion Msun ?In a neutron star, the core is: Group of answer choices primarily iron and silicon. no longer rotating. made of compressed neutrons in contact with each other. constantly expanding and contracting. electrons and protons packed so tightly they are in contact.Suppose that a neutron star has a radius of 13 km and a temperature of 7,000,000 K. How luminous is it?
- Why is there an upper limit to the mass of neutron stars?How many neutron stars are estimated to be in the Milky Way galaxy? 10 2000 30,000 100 million 100 billionCalculate the gravitational redshift of radiation of wavelength 550 nm that is emitted from a neutron star having a mass of 5.8 x 1030 kg and a radius of 10 km. Assume that the radiation is being detected far from the neutron star.
- The Virgo cluster has a distance of about 17 Mpc from the earth. Using Hubble's law, determine the recessional velocity Vr to this cluster.What is the escape velocity (in km/s) from the surface of a 1.1 M neutron star? From a 3.0 M neutron star?What evidence can you cite that pulsars are neutron stars?