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: Which mathematical quantity is imagined to be present at the center of a black hole? a) Unity b)…
A: Answer:- Option (b) correct. Singularity
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: If you wanted to determine the mass of a black hole in an X-ray binary, what would be easiest for…
A: Gravitation.
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: What is the average density of the neutron star that has the same mass as the sun but a radius of…
A: Solution:-Given thatmass of neutron star =mass of SunRadius of neutron star (Rn)=97.254 km=97254 m
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: 3. Determine the Schwartzschild radius and the average density of a black hole formed by the…
A:
Q: Synchrotron emission by electrons of y = 2 x 107 in a supernova remnant peaks in the ultraviolet at…
A: A charged particle moving inside a magnetic field tends to release energy. When the velocity of…
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: A supernova occurs 140,000 light years from Earth, where a neutron star of mass 1.6 solar masses and…
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: 15) Calculate the gravitational redshift caused by Sun on the photons coming from its surface.
A: As per general relativity when light moves away from a gravitational source its wavelength will…
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: What are the two forces that make a star stable, and using these two ideas, what Mummon happens in…
A: Asked: 1. What are the two forces which operate in the stars, which make them stable? 2. What…
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: es are detectable by their accretion disks producing mainly what type of light? a. infrared light…
A: Detection of black holes : Black holes are surrounded by material gas and funnelled by gravity into…
Q: a) Calculate the Schwarzschild radius of a person of mass 80 kg. Compare this to the size of a…
A:
Q: 3. The spacetime diagram shows four supernovae events at A, B, C, and D. These supernovae arc…
A: (a) Introduction: A light cone is a path that a flash of light, emanating from a single event…
Q: Matter accreting onto a white dwarf is generating 1025 W of thermal X-ray emission. What is the…
A:
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: The hydrogen Balmer line Hγ has a wavelength of 434.0 nm in the laboratory. It is observed in a…
A: Quasi-stellar objects or quasars are the distant objects in the universe. They are hard to detect…
Q: Four research teams measured the rotation period of a newly detected neutron star, and what each…
A:
Q: How can mass escape from the region inside of a black hole? Oa Matter can escape the event horizon…
A:
Q: 1- can we obtain energy from a Votating black hole ?
A: Einstein's theory of general relativity , the theory that connects space, time, and gravity predicts…
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: 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: 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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