How can a black hole emit X-rays?
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: What type of explosion occurs when a black hole is born? Group of answer choices Gamma-ray Burst…
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Q: Why is dark matter a problem?
A: Without dark matter stars would escape their galaxies and galaxy clusters would come unbound.…
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: when seeing an object at large distance
A: Given as, Eα1at
Q: (a) Calculate the photon capture radius and the Schwarzschild radius of M87* (in AU). (b) Why was it…
A: Schwarzschild radius is given by the formulars=2GMc2G is the universal gravitation constant,…
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: Why black holes are difficult to observe directly?
A: In supernova the collapse of massive stars core form a black hole. In space , a Black hole is 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: How can we “observe” a black hole if neither matter nor radiation can escape from it?
A: Given: Black hole
Q: an introduction on what is the event horizon of a black holes?
A: The occasion horizon of a black hollow is a essential idea in astrophysics that marks the boundary…
Q: How do black holes form?
A:
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: What would happen if you were to jump feet first into a black hole?
A: If we jumped in feet first into a blackhole, we would be torn into pieces via the process of…
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: How can we calculate Schwarzschild radius?
A: The Schwarzschild radius is the radius of the object which is obtained by compressing the mass or…
Q: Most stars exist as a binary system fission reactor quasar…
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Q: Find the wavelength of peak intensity for a hot 45000 K star that emits thermal radiation.
A: Given information:Temperature of the object (T) = 45000 K
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: Where do the γ bursts come from?
A: Gamma-ray bursts are one of the top unsolved mysteries in astrophysics, alongside such burning…
Q: Which of the following can a black hole not "eat" or consume? another black hole O a planet O black…
A: A black hole in simple terms is a region of very very strong gravity which is unimaginable. It is…
Q: Suppose the temperature of a blackbody increases by 20%. What will happen to the total rate at which…
A: Energy radiated by a blackbody depends on its temperature and the relationship between temperature…
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…
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