The fact that gamma-ray bursts are so distant means that they must be very energetic events. (T/F)
Q: Calculate the gravitational redshift of radiation of wavelength 550 nm (the middle of the visible…
A: The gravitational redshift is given by the formula, z=11-2GMc2r-1 where, G is the gravitational…
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: to what density must the matter of a 20M☉ star be compressed in order for the star to dissapear…
A: Given Data The mass of the matter is:M=20Mo The mass of the sun is:Mo=1.99×1030 kg To find: The…
Q: What is the answer for sub-item (b in the picture) if the radius of the neutron star is 94.881 km? (
A: Given data : Radius of sun , r = 94.881 Km = 94.881×103 m To find : Find average density of sun if…
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 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: At time t-0 an electron at the origin is subjected to a force that briefly accelerates it in the -z…
A: Given: Acceleration,a=5×1017m/s2Speed of light,c=3×108m/sCoulomb…
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: 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: A turbocharged 4-stroke medium speed Diesel engine has a cylinder bore of 200 mm and a stroke of 270…
A: The problem is based on the calculation of brake power and energy consumption of a four-stroke IC…
Q: The highest-velocity stars an astronomer might observe have velocities of about 400 km/s. What…
A: The radial velocity formulae is
Q: If the expanding layers of a supernova move at a constant velocity of v = 10, 000 %3D km/s and the…
A: Given: velocity of supernova v=104 km/s mass of the supernova M=2.4×1031 kg Ephoton=mc2 Time taken…
Q: Equate the given expressions for pressure to find an expression for the maximum mass of a star. Find…
A:
Q: 2. (a) Find the virial mass of a cluster for which the rms radial velocity dispersion is 5 km/s and…
A: Because of how clusters are prepared, they remain as tiny particles in the course of an experiment…
Q: Calculate the Eddington limit for star of 10³0 Msun.
A: In a star, the radiation pressure is constantly pushing away matter while gravity is pulling it in.…
Q: When two stars are in the same star system, they can affect each other’s evolution. Two stars in the…
A: Two stars in the same system might evolve at a different pace, depending on their distances in the…
Q: radio lines of neutral Hydrogen (apart from H91α) What does H91α meaning for?
A: Introduction: The Balmer series is the name given to a series of spectral emission lines of the…
Q: Convert the average mass density in gm/cm-3 of a M = 0.5 Msun R = 0.015 Rsun white dwarf to the…
A: Given that For white dwarf star given that M = 0.5 Msun R = 0.015 Rsun We know that mass of sun…
Q: If the hottest star in the Carina Nebula has a surface temperature of 51,000 K, at what wavelength…
A: Concept: "The Wien's displacement law states that the wavelength carrying maximum energy is…
Q: ▼ Part L A 2.40 kg can of coffee moving at 1.50 m/s in the +x-direction on a kitchen counter…
A: Given values: Coffee can, mc=2.40 kgInitial velocity of the coffee can,uc=1.50 m/si^Mass of the box,…
Q: Vega has Mv = 0.5. How large is Mbol? Calculate the luminosity of Vega. Remember that Mbolo = 4.75.…
A: Given information": The absolute visible magnitude of Vega (Mv) = 0.5 The Spectral class of Vega is…
Q: The exponential drop in the brightness of supernova 1987A was due to the decay of 56Ni (t1/2 = 6.1…
A: Given: The reaction of decay is given as, Ni56t1/2=6.1 days→Co56t1/2=77.1 days→Fe56
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: A gamma ray burst delivers approximately 5.0 X10-6 joules/m2 to a detector on an orbiting space…
A: A gamma-ray burst delivers approximately 5.0 X10-6 joules/m2 to a detector on an orbiting space…
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: Type 1a supernovae are not: The result of exceeding the Chandrasehkar limit. Produced…
A: Required :: Type 1a supernovae are not:
Q: (a) Using Einstein's famous equation for rest-mass energy, E = mc², undergoing nuclear energy that…
A:
Q: If Betelgeuse is a M2 type star, what is the approximate temperature of the star in K?
A: Introduction - It is a supergiant star and the distance of this star from the sun is approximately…
Q: Neutrinos have never been detected experimentally. (T/F)
A: Neutrinos are chargeless particles of very tiny mass which cannot be measured. Since they have very…
Q: Use the small-angle formula to find the linear diameter of a radio source with an angular diameter…
A: Given :- angular diameter of radio source = 0.0024 arc seconds. distance = 2.30 Mpc .
Q: A main sequence star of mass 25 M⊙has a luminosity of approximately 80,000 L⊙. a. At what rate DOES…
A: Given information: The mass of the star (m) = 25M⊙ The luminosity of the star (L) = 80000L⊙ part a):…
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- What happens on the surface of a neutron star to produce bursts of X rays?A supernova’s energy is often compared to the total energy output of the Sun over its lifetime. Using the Sun’s current luminosity, calculate the total solar energy output, assuming a 1010 year main-sequence lifetime. Using Einstein’s formula E=mc2 calculate the equivalent amount of mass, expressed in Earth masses. [Hint: The total energy output of the Sun over its lifetime is given by its current luminosity times the number of seconds in a year times its ten billion-year lifetime; ; mass of earth = 6×1024kg; c = 3×108m/s. Your answer should be 200-300 Earth masses.]if a star is converted every bit of its mass. into energy the conversion efficiency would be 100%. however no star is this efficient in its energy production stars with less than 1.3 solar masses convert hydrogen into helium with an efficiency of only 0.7%. besring in mind that aldebaram has a mass of 2.32*10^30 kg. how long will it live if it converts all of its hydrogen into helium with an efficiency of 0.7%. 1 year = 365.25 days. lifetime= years
- Calculate 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.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?If a circular accretion disk around a 1.4 M, neutron star has a radius of 1.00 x 105 km as measured from the center of the neutron star to the edge of the disk, what is the orbital velocity (in km/s) of a gas particle located at its outer edge? (The mass of the Sun is GM 1.99 x 1030 kg. Hint: Use the circular orbit velocity formula, V, = ; make sure to express quantities in units of meters, kilograms, and seconds.) km/s