1: Briefly explain what are neutron stars and then estimate the escape velocity of a neutron star.
Q: Part A To what radius would the Sun have to be contracted for its escape speed to equal the speed of…
A: The minimum velocity that a particle must have to escape the planet's gravitational attraction is…
Q: The temperature of the CMB today is T=2.725 K. Calculate the temperature of the CMB at redshift…
A: Given T = To = 2.725 K z = 2000 Temperature of CMB at redshift 'z' is given by T = To (1+z)
Q: 2) What happens when one of the star ina binary system becomes a black hole.
A: Binary systems are two astronomical bodies that orbit each other around a common center of mass. If…
Q: What is a neutron star? Group of answer choices A neutral star A compact star composed mainly of…
A: The problem is based on the concept of the neutron star. It is a celestial object of a very small…
Q: Consider a close binary system composed of a white dwarf, a giant star, and an accretion disk. Which…
A: Given Data: Let us consider the given closed binary system composed of a white dwarf , a giant star…
Q: Two stars are in a closely orbiting binary system. The smaller star (a K-type main sequence star)…
A: The correct option. Following the mass transfer, which of the following is now true of the main…
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: 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: How many neutrons are in a 2.8-solar-mass neutron star? Assume the star’s mass is entirely neutrons…
A:
Q: 5) A nova can occur when a white dwarf, which is the dense core of a once-normal star, "steals" gas…
A: Given, Energy E = 1038 J Mass m = ? From Einstein's mass energy relation, we have…
Q: Despite strong theoretical arguments for the existence of neutron stars and black holes, many…
A: Scientific scepticism is an essential tool for expanding our understanding of science, not a barrier…
Q: Determine the surface gravity on a neutron star. Assume the star has a mass 50% bigger than the…
A: mass of Sun = 1.98 * 1030 Kg mass of neutron star = mass of sun + 50%mass of sun = 1.5 * 1.98 *…
Q: Problem 4. Black Holes The Schwarzschild radius determines the event horizon of a black hole.…
A: Just use the classical formula for escape velocity. And write c for escape velocity. This will give…
Q: Consider a gas of pure ionized hydrogen. Calculate the central pressure of a Sun- like star which is…
A: Given, Temperature T = 2 × 108 K Mass density D = 2 × 105 kg/m3 Pressure P…
Q: The first gravity wave was detected by LIGO in Sept 2015. What caused this gravity wave? Group of…
A: LIGO is Laser Interferometer Gravitational-wave Observatory. It is the world's largest gravitational…
Q: Four research teams measured the rotation period of a newly detected neutron star, and what each…
A:
Q: Assume that the laws of Newtonian mechanics and Newtonian gravity still hold for a neutron star,…
A: Assume that the laws of Newtonian mechanics and Newtonian gravity still hold for a neutron star,…
Q: What is the sum of 44.06005 s, 0.0598 s, and 1103.4 s? Answer the question with correct number of…
A:
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: Describe the reaction that powers the sun during its main sequence lifetime. Be sure to include the…
A: The sun is powered by nuclear fusion, a process in which atomic nuclei combine to form a heavier…
Q: a)What is a neutron star? B)How are they formed? C)Will our Sun become a neutron star? Why or why…
A: a) A neutron star is a core which is formed from the collapsed super giant stars which had a total…
Q: Imagine there is a large star that produces 2.5 x 1030 Watts of power. If there is a planet orbiting…
A: Power of a star (P) = 2.5×1030 Watt distance of planet (d) = 500 million km
Q: The speed of light in vacuum is 300,000 km/s. Suppose that the pulse rate of a pulsar is 0.001 s.…
A: Solution: It is given that, For a 0.001 s pulse time, the scale must be less than 300 Km. It…
Q: The hydrogen Balmer line Hβ has a wavelength of 486.1 nm in the laboratory. It is observed in a…
A:
Q: 7. Let's characterize a typical neutron star. (a) Compute its luminosity in units of the solar…
A: The neutron star has a surface temperature of 106 K and a radius of 7 km One solar luminosity is…
Q: Oscillations and pulsations (periodic and quasi-periodic) can be observed on the Sun, both on the…
A: In this question we are given that oscillations and pulsations can be observed on the sun, both on…
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- Explain what is meant by the Schwarzschild radius of a black hole. Using a Newtonian approx- imation, derive an expression for the Schwarzschild radius, R, of a black hole of mass MBH- Calculate the Schwarzschild radius for a body with mass equal to the Sun's mass, and express your answer in units of kilometres.Which particle has the largest mass? and How do nuclear decay reactions help explain the difference in the mass of the proton and neutron?The first confirmed black hole, Cygnus X-1, was regarded as proof that black holes exist because ita. is a compact object in a binary systemb. emits X-rays from a hot accretion diskc. is accreting matter from a main-sequence companion d. has a period of 5.6 dayse. has a mass of ten solar masses
- (Astronomy) PSR1913+16 Problem II. Using only the Figure, what are the maximum radial velocities as found from the redshift and blueshift, respectively? Note: redshifts have positive radial velocities values in the figure, whereas blueshifts have negative radial velocity values. (Answer in km/s)(Astronomy) PSR1913+16 Problem I. Are the two stars in PSR 1913+16 pulsars, neutron stars, or a combination of the two?Discuss the causes, characteristics, and major features of black holes. Explain why the concept of a black hole does or doesn't seem reasonable to you and provide some rationale for your views?
- (Astronomy) Neutron Star Escape Velocity. What is the escape velocity at the surface of a 2.80-solar-mass neutron star that has a typical radius for this type of star? Express your answer in units of km/s.Which of the following most correctly explains why we have not yet observed any white dwarfs derived from M stars: Group of answer choices Most M stars end up as neutron stars or black holes. The lifetime of M stars is longer than the age of the universe. Most M stars are located near the edge of the universe, beyond the visible horizon. Most M stars are members of a binary system, and the white dwarf would be obscured by the glare of the more massive companion. White dwarfs are too dim to be observed with currently available techniques.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?
- Which of the following is the most reasonable statement regarding a neutron star? Group of answer choices It consists mostly or entirely of neutrinos. The most common component of a neutron star is hydrogen. The star will turn into white dwarf. All its electrons have been combined with protons. It consists of neutrons and protons floating in a sea of electrons.2) How does the mean density of a 1.5 Mo neutron star compare to a carbon nucleus? Assume the carbon nucleus has a radius r=3 x 10–15 m.Consideration of the total energy in a radio lobe of an AGN implies that the energy is distributed evenly between the particles in the lobes and the magnetic field. This implies that the magnetic field scales with observed luminosity L as Select one: a. is independent of L 1 b. + C. L 130 d. [4/7 e. L