Calculate how far the quasar is in light years by knowing that distance = velocity/Ho. Make the appropriate units conversions.
Q: Sketch a caricature or diagram of the situation or phenomenon showing that Hubble’s Law strongly…
A: Hubble's law is mathematically given by, v = H0 * d Where,v is the galactic velocity, H0 is the…
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A: Given data: Redshift z=4.89. The recessional velocity is given as, v=cz+12-1z+12+1 Here, c is the…
Q: Describe a quasar.
A: Quasar is an extremely luminous active galactic nucleus. inside quasar there is a supermassive black…
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Q: Calculate how far the quasar is in light years by knowing that distance velocity/Ho. Make the…
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Q: A 2 GHz radio signal is detected from a galaxy as 0.86GHz. Estimate the relative velocity.
A: Like all waves light waves also get Doppler shifted. In the case of light waves, the Doppler shift…
Q: A quasar has a redshift of 3.81. What is the recession velocity of this quasar in meters per second?…
A: Givenz=3.81 (redshift) formula for redshiftz=(c+v)(c-v)-1wherec=speed of…
Q: The hydrogen Balmer line Hβ has a wavelength of 486.1 nm. It is shifted to 579.8 nm in a quasar's…
A: Redshift is defined as the change in the wavelength due to apparent motion in the quasar spectrum.
Q: If a galaxy is 30 Mpc away from Earth and recedes at 400 km/s, what is Hubble's constant?
A: It is observed that galaxies are moving away from each other instead of coming closer. Based on…
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Q: At what redshift will the Lya line (2o = 1215°A) be centered in the Johnson-Cousins U band? (Quasars…
A: From the redshift formula, we have 1+z=λobsλemitz=redshiftλobs=obserevd…
Q: The Lyman a line in a galaxy's spectrum was observed to be 208 nm. Calculate the Doppler redshift.
A: When there is relative motion between observer and source the wavelength observed will e shift. When…
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A: Given,
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A: Active galaxies are known as quasars. An ordinary galaxy will have about 100,000 times the…
Q: A galaxy is oberverd to have emission lines of blue hydrogen lines of 434 nm. What will be the…
A: When the relative speed between observer and source gets close to the speed of light, relativistic…
Q: If a galaxy is 10.0 Mpc away from Earth and recedes at 520 km/s, what is Hubble's constant?
A: Edwin Hubble in his observations found that the galaxies were moving away from us instead of getting…
Q: Observations of quasars have shown us that many are extremely _________, emitting more energy than…
A: Required : Fill in the gaps.
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A: As per the information given by Erik Verlinde, there difference in the type of matter in different…
Q: 3C 273 was the first quasar identified (1963). When we look at its chemical spectrum, we see that…
A: Given:- λobs = 759 nm.λ0 = 656 nm
Q: The hypervelocity star S5HVS1 has a redshifted Hβ line (rest wavelength of 486.135 nm) observed at…
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Q: Explain why it only appears that we are at the center of expansion of the universe and why an…
A: Universe is expanding from everywhere and it has no center of expansion. Materials expand from a…
Q: The hydrogen Balmee lime Hb has a wavelength of 4.86.1 nm. It is shifted to 55.8 nm in a quasar's…
A: The expression for the red shift is,
Q: What is the mechanism for the energy output of quasars?
A: Quasars are high luminosity objects in the galaxy, having very high masses (ranging from millions to…
Q: Is a quasar with a redshift of z = 2 going faster than the speed of light? Why or why not?
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- What is the redshift z of a galaxy 186 Mpc away from us? Note: Assume a value of the Hubble constant of 70.0 km/s/MpcSuppose a distant quasar has a redshift of 6. At what fraction of the speed of light is the quasar moving away? z = Δλ/λ = v/cNeed homework help An object is measured to be at a distance of 20 Megaparsecs away from Earth. Using a currently accepted value of the Hubble constant, calculate its expected velocity away from Earth due to cosmic expansion.
- The hydrogen Balmer line H, has a wavelength of 486.1 nm. It is shifted to 580.7 nm in a quasar's spectrum. What is the redshift of this quasar? (Hint: What is A2?)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.What is the Eddington luminosity of a quasar with a mass of 1 billion Msun ?
- What is the redshift of this quasar?Suppose an alien race on a distant planet tries to send a message to us, with a laser (light). However, we were unaware that there is a stellar-mass black hole almost directly between us and them. How would this complicate our attempts to locate their position in the Galaxy? O Gravitational lensing would make the signal appear to be coming from a different location O The information carried by the laser (light) would be altered O It would not matter The black hole absorbs all of the light(Astronomy) PSR1913+16 Problem I. Are the two stars in PSR 1913+16 pulsars, neutron stars, or a combination of the two?
- A survey that uses Type la supernovae as standard candles to measure the distances to galaxies, combined with spectroscopic analysis of those galaxies Select one: to obtain their redshifts and recession velocities, yields the data shown in the The Universe is undergoing а. table. Use the data to sketch a diagram of velocity versus distance. Choose the accelerated expansion statement given below that can be O b. The Universe is contracting. inferred from the data. Velocities and distances to Ос. The data does not provide sufficient galaxies information to determine the rate of Distance (Mpc) expansion of the Universe. Velocity (km/s) 10 730 d. The expansion rate of the Universe is 250 16250 constant 500 30000 e. The expansion of the Universe is 800 40000 decelerating. 1000 45000A galaxy is observed to have emission lines of blue hydrogen lines of 434 nm. If the galaxy has a a recessional velocity of 0.916c calculate the observed wavelength.The critical density of a universe is around 5×10-27 kg/m³. Estimate the Hubble constant for this universe.