How can a black hole emit X-rays?
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: hat is the mass of a black hole with a Schwarzschild Radius of 1 AU? Please show w
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Q: Stars begin their life cycle in a O black hole O nebula O nova O supernova
A: Answer:) star begin their life cycle in a nebula
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: What type of explosion occurs when a black hole is born? Group of answer choices Gamma-ray Burst…
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Q: Calculate the mass of black hole with a radius of 20 km.
A: For a blackhole, the radius of the event horizon or the point of no return is defined as the…
Q: Approximate the wavelength of the Hawking radiation from a black hole of mass 1.5×1030 kg 74 km 86…
A: To approximate wavelength of Hawking radiation from a black hole , we can use formula for…
Q: Calculate the Schwarzschild radius of an average human weighing 65 kg.
A: When an object crosses its Schwarzschild radius it causes an irreversible gravitational collapse.…
Q: A Black Hole gets its name because it is the remains of a massive black star. True False
A: When the massive stars collapse, then the black hole is produced. It absorbs all the mass and light…
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: Is the event horizon of a black hole the actual physical surface of the object?
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Q: Calculate the size to which the Sun should shrink to become a blackhole.
A: The limit to which an object can shrink without undergoing gravitational collapse is called…
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: 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: Why haven't we detected any Primordial black holes?
A: Primordial black holes or PBH are black holes that formed soon after the birth of the universe. The…
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: What would the wavelength of the 21 cm line be for a source moving away from the Earth at 10% the…
A: As per the Doppler effect, the observed wavelength can be found as, Here, λO, λS, v, and c…
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: How is the behavior of light influenced under extremely high gravitational fields, as in black…
A: In the vicinity of very high gravitational fields, for example, those found close to dark openings,…
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: What characteristics must a binary star have to be a good candidate for a black hole? Why is each of…
A: The characteristic must a binary star posses for it to be a good candidate for black hole is, From…
Q: 28) How accretion disk surrounding the black hole helps in its detection?
A: Black holes are generated when supermassive stars die. The gravitational collapse is so large that…
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: Most stars exist as a binary system fission reactor quasar…
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Q: the Sun were to become a black hole at what distance will the escape veloc
A: The distance at which the escape velocity of a black hole becomes the speed of light is called the…
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- A gamma ray burst delivers approximately 5.0 X10-6 joules/m2 to a detector on an orbiting space telescope. Assuming that the red shift indicates that the source is 5 X109 light years away (1 yr =3.16X107 seconds) and that the energy at the detector has been corrected for the redshift, what is the energy output of the source in units of 1047 joules and how does it compare to the rest energy of the Sun. The speed of light is 3.0 X 108 m/sec. A year is 3.16 X 107 sec. The mass of the Sun is 2 X 1030 kg. Rest mass energy is E=mc2. The surface area of a sphere is 4πr2.Where do the γ bursts come from?F2 Which of the following can a black hole not "eat" or consume? #3 E another black hole a planet black holes can eat anything O a cloud of gas and dust O a star F3 $ 4 R F4 Q Search DII % 5 F5 T L ☀ < F6 6 Y ☀ F7 & 7 PrtScn U F8
- Suppose the temperature of a blackbody increases by 20%. What will happen to the total rate at which it radiates energy?Calculate the gravitational redshift of radiation of wavelength 550 nm (the middle of the visible range) that is emitted from a neutron star having a mass of 5.8 × 10³⁰ kg and a radius of 10 km. Assume that the radiation is being detected far from the neutron star.Integrate the first equation over all wavelengths to find an expression for the total luminosity of a black body star. (See the second equation for a hint)