an introduction on what are supermassive black holes?
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: What provides the main support against the inward force of gravity in a main sequence star? What…
A: A white dwarf is very dense star. Its mass is comparable to the mass of the Sun while it size is…
Q: If the Sun were to magically, and instantly, become a black hole; what would happen to the Earth’s…
A: Supernova are basically explosion of star
Q: Describe the evolution of a very low mass start a red dwarf, birth to death
A: Answer Low mass stars in their dating stages shed their outer layers transfer most of their mass…
Q: What are the approximate spectral type, temperature, absolute magnitude number, and luminosity of…
A: Required : Spectral type, absolute magnitude, temperature and luminosity of star E.
Q: where do hydrogen-buring stars spend most of their time on the H-R Diagram? Is it the main sequence,…
A: Hydrogen burning stars are those stars which burns hydrogen as their dominant fuel. Horizontal…
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: 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: 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: Fill in blank missing word A Blank variable is type of bright giant that is in the instability strip…
A: This problem can be solved by knowing some properties of Cepheid variable stars.
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: Assume that you observe both of these stars in a galaxy 10 million light-years away. How bright is…
A: 1) Distance of both stats from observer, d = 10 million light years d = 10 x 106 ly d = 107 ly 1…
Q: (Astronomy) Orbital Period. What is the orbital period of a bit of matter in an accretion disk…
A:
Q: Black Hole Accretion Disk. Part A: If the inner accretion disk around a black hole has a…
A:
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: Why don't red dwarfs become giant stars?
A: Red dwarf stars or M-type stars are small stars with a mass of 0.08 to 0.6 times the mass of the…
Q: What is a standard candle in the astronomical sense? How do Cepheid variables fit into this and what…
A: For distances which are too large to measure using parallax, astronomers use 'standard candles'.…
Q: (Astronomy) Schwarzschild Radius. Part A: Find the Schwarzschild radius for the least massive…
A: please see the next step for solution
Q: The time it takes for a cloud 106,000 AU in radius to collapse in "free-fall to form a new star is…
A:
Q: A 1.4 M. neutron star and a 0.5 M. white dwarf have been found orbiting each other with a period of…
A: The given formula works only if we put quantities in the units given, solar mass, years 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: an introduction on what are black holes and how they are formed?
A: As per the we have to give introduction on what are Black holes and their formation.
Q: Explain what is meant by the Schwarzschild radius of a black hole. Using a Newtonian approx-…
A: Given data, Schwarzschild radius = Rs Mass of the black hole = MBH
Q: Match each characteristic below to the appropriate stellar end state. (Select W-White dwarf,…
A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: What are the two possibilities for the final state of a close, massive binary system?
A: For a star in a binary system, there is a region surrounding the star where the orbiting object is…
an introduction on what are supermassive black holes?
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- Suppose a quasar is shining with a luminosity L. What is the approximate minimal mass of the black hole? (If the black hole had a lower mass than this, the pressure in the material would overcome the gravity of the black hole and the material would be blown apart.) Give your answer in solar masses, in scientific notation to one significant figure (no decimal places). Value: L=1×10^12Lsun Suppose the quasar in the previous problem is 10% efficient at turning rest mass into energetic photons, according to Einstein's equation E=mc2. What is the necessary rate of accretion of mass onto this black hole, to sustain its luminosity of 1* 1012 solar luminosities -- i.e. how much mass must be 'fed' to this black hole to keep the AGN shining so brightly? Give your response in units of solar masses of material per year, with one decimal place.The first confirmed black hole, Cygnus X-1, was regarded as proof that black holes exist because ita. is a compact object in a binary systemb. emits X-rays from a hot accretion diskc. is accreting matter from a main-sequence companion d. has a period of 5.6 dayse. has a mass of ten solar masseswhy do dark streaks appear in visible light images of the Trifid nebula, but appear bright in an infared image
- Calculate the Schwarzschild radius for Milky Way.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?Skeleton Densities. Part A: Create a ratio the neutron star density (ρns = 1015 g/cm3) to the white dwarf density (ρwd = 2×106 g/cm3). Please round your answer to one significant digit. Part B: Which stellar property results in electron degeneracy pressure supporting white dwarfs and neutron degeneracy pressure supporting neutron stars?
- Which of the following is the most reasonable statement regarding a neutron star? Group of answer choices It consists mostly or entirely of neutrinos. The most common component of a neutron star is hydrogen. The star will turn into white dwarf. All its electrons have been combined with protons. It consists of neutrons and protons floating in a sea of electrons.What happens to a massive close binary system during its final stage?Molecular cloud can release degeneracy pressure in form of radio and infrared photons True or False