Although visible light cannot escape from a black hole, high- energy radiation, like gamma rays, can. (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: What is a black body? On what factors does the radiation emitted from it depend?
A:
Q: The fact that gamma-ray bursts are so distant means that they must be very energetic events. (T/F)
A: Gamma rays are the photons with the highest energy ever detected. Gamma-ray bursts or GRBS are…
Q: The figure shows a parallel-plate capacitor of plate area A-11.1 cm and plate separation 2d-7.20 mm.…
A:
Q: A He-Ne laser with wavelength 632.8 nm is fired from a great distance toward a neutron star with…
A: As per the general theory of relativity, gravity affects light and causes energy change in photons.…
Q: Given that the solar spectrum corresponds to a temperature of 5800 K and peaks at a wavelength of…
A: Wien's displacement law is used to calculate the maximum wavelength emitted by a blackbody at a…
Q: Is the event horizon of a black hole the actual physical surface of the object?
A:
Q: Why is a black hole invisible?
A: A black hole is a region in space where the pulling force of gravity is so strong that light is not…
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: What causes X-ray emissions in a binary system of a star and a black hole?
A: A binary system is two gravitational bodies orbiting each other with a common center of mass. A…
Q: Calculate the time required for a 1 solar mass blackhoe to completely radiate its energy.
A:
Q: Assume a neutron star has a mass of about 1.2 times the mass of the Sun and a radius of 7…
A: Given: Mass of neutron star = 1.2 times mass of sun. Radius of neutron star = 7 km. Diameter of…
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: 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: 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: 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: Even though neutral hydrogen is the most abundant element in interstellar matter, it was detected…
A: Interstellar matter is the matter that exists in the space between the stars. It is mostly comprised…
Q: Are there different types of black holes?
A: Since you have posted multiple questions, we will provide the solution only to the first question as…
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: 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: Suppose a star has the same mass as the Sun but has a diameter 5 times as large. Compare the total…
A: Given: It is given that suppose a start has the same mass as the Sun but has a diameter 5 times as…
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: Calculate the mass (in kg) and Schwarzschild radius (in m) of a black hole at T= 220 K. mass kg…
A: according to the guidelines we are subjected to attempt only 1 question.
Q: Given that the solar spectrum corresponds to a temperature of 5800 K and peaks at a wavelength of…
A: A blackbody is an object that is capable of absorbing all the radiation that falls on it. Black-body…
Q: If the scattering material is purely ionised hydrogen, what is the Eddington Luminosity for a…
A: For a scattering material of mass M that is consisted of purely ionized hydrogen, the Eddington…
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: II. You have been hired as a space weather forecaster. At 11:30:00 UT on your first day, November…
A: The distance from earth to sun is = 149.6 x 106 km
Q: What is Hawking radiation ?
A: It is named after the great scientist Stephen Hawking. He combined quantum physics and the general…
Q: What would a dead star of 1.1 solar masses be
A: White dwarfs are remnants of dead stars. White dwarfs are very dense and the mass of a white dwarf…
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: Use the blackbody spectrum to determine the peak wavelength for a distribution with temperature…
A: According to Wien's displacement law the product of wavelength and temperature for a black body from…
Q: Calculate the temperature of the black hole with the same mass as moon. (7.3 × 1022 kg)
A: Given Mass of the block hole M = 7.3×1022 kg Find the temperature of the black hole, as following…
Q: Assuming a mass loss rate of 3*10^-8 solar masses yr^-1 and a stellar wind velocity of 100 km s^-1…
A: Required : Mass density at the 100 AU
Q: Calculate the gravitational redshift of radiation of wavelength 550 nm (the middle of the visible…
A: As per general relativity, gravity affects light. Lights energy will depend on the gravitational…
Q: ce bursts of X rays
A: X ray bursts occur in low mass X ray binary system where a neutron star and low mass main sequence…
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