User:Marshallsumter/Radiation astronomy1/Galaxy clusters/Quiz

Galaxy cluster astronomy is a lecture for the radiation astronomy department course on the principles of radiation astronomy.

You are free to take this quiz based on Galaxy cluster astronomy at any time.

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Quiz
{Yes or No, Particle radiation consists of a stream of charged or neutral particles, from the size of subatomic elementary particles upwards of rocky, liquid, plasma, and gaseous objects to even larger more loosely bound entities such as galaxies, galaxy clusters and strings with measurable motion. + Yes - No
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{Which of the following are associated with globular clusters as a standard candle? - characteristic mottling + luminosity functions + turnover point - incipient resolution + dispersion of the distribution - easy to recognize + log-normal function
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{Yes or No, An intergalactic medium is a medium in between interplanetary and interstellar media. - Yes + No
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{Complete the text: Match up the item letter with each of the possibilities below: Intracluster medium - A Mayall's object - B M82 PAHs - C Milky Way bubbles - D Local Hot Bubble - E Stephan's Quintet - F UGC 8335 - G Arp 272 - H { G (i) } { C (i) }. { F (i) }. { E (i) }. { D (i) }. { A (i) }. { H (i) }. { B (i) }.
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{True or False, An intergalactic medium is a rarefied plasma rather than a gaseous medium. + TRUE - FALSE
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{Which of the following is not a characteristic of X-radiation in the IGM? - X-rays come from the IGM - an X-ray background + shock heating - secondary ionizations and excitations - far more likely to be absorbed by He I rather than H I
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{Do we know enough about the intergalactic medium to trust measurements of background sources seen through foreground { structure (i) }?
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{Complete the text: Whether the thermal IGM is { collisional (i) } or collisionless at scales smaller than the scale { Coulomb (i) } scale depends on the effect of reduced { mean free path (i) } that is mediated by the plasma { instabilities (i) }.
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{True or False, Star clusters have been discovered to occur outside a galaxy. + TRUE - FALSE
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{Which of the following are phenomena associated with strong forces in the IGM? + stochastic acceleration + hottest clusters + scaling of the acceleration efficiency with IGM temperature - collisionless IGM - placid magnetic compressions + the smaller the mean free path - cold regions - least effective for inducing the instability
 * type="[]"}

{True or False, O VI is a lithium-like ion. + TRUE - FALSE
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{Which of the following are phenomena associated with electromagnetic cascades? + spectral and timing properties of astronomical sources + very high-energy γ-rays + the way from the source to the Earth - soft X-rays - redshifts + ambient radiation fields inside the γ-ray source - source stability - protons
 * type="[]"}

{True or False, The hierarchical clustering model has the gravitational effects of dark matter drive the evolution of structure from the near-uniform recombination epoch until the present day. + TRUE - FALSE
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{Complete the text: Match up the item letter with each of the cosmogonic possibilities below: interior models of the giant planets - A high interest for cosmogony, geophysics and nuclear physics - B hierarchical accumulation - C clouds and globular clusters - D cosmic helium abundance - E deuterium fusion - F a large deficiency of light elements - G after galactic sized systems had collapsed - H the motions of hydrogen { D (i) } formation of luminous quasars { H (i) }. stars with an initial mass less than the solar mass { G (i) }. rotating liquid drops { B|F (i) }. primordial is less than 26 per cent { E (i) }. a solar mixture of elements dominated by hydrogen and helium gas { A (i) }. around 13 Jupiter masses { F (i) }. smaller rocky objects { C (i) }.
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{True or False, As a galaxy is made up of millions or billions of stars, a solitary star does not exist in a galaxy. - TRUE + FALSE
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{Spiral galaxies have which of the following in common? + spiral arms - a spheroidal shape - may appear lenticular - is irregular + arms of younger stars + may contain star clusters + dust lanes
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{Phenomena associated with the Milky Way are? + spiral arms - a spheroidal shape + a standard to differentiate dwarf galaxies + often referred to as the Galaxy + arms of younger stars + contains star clusters + dust lanes + extended red emission (ERE) + a faint galaxy heavy with dark matter may orbit it - larger than the Andromeda galaxy
 * type="[]"}

{Complete the text: Match up the standard candle with a representative image: Tully-Fisher relation - A surface brightness fluctuations - B absolute magnitude - C globular clusters - D active galactic nuclei - E Type Ia supernova - F classical Cepheid variable - G novae - H planetary nebula - I { C (i) } { H (i) }. { A (i) }. { G (i) }. { F (i) }. { B (i) }. { E (i) }. { I (i) } { D (i) }.
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{Complete the text: Match up the item letter with each of the possibilities below: Einstein ring - A stellar nebula - B Andromeda galaxy - C Triplet galaxies interacting - D Hubble galaxies - E Dark matter halo simulation - F Fairall 9 (Seyfert galaxy in X-rays) - G Tycho Brahe observatory, remotely controlled telescope, captured galaxy - H { C (i) }. { H (i) }. { A (i) }. { G (i) }. { F (i) }. { B (i) }. { E (i) }. { D (i) }.
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{Complete the text: Match up the item letter with each of the possibilities below: Sa - A Sb - B Sc - C SBa - D SBb - E SBc - F Irr - G S0 - H { C (i) }. { H (i) }. { A (i) }. { G (i) }. { F (i) }. { B (i) }. { E (i) }. { D (i) }.
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{True or False, 3C 295 is a galaxy cluster filled with a vast cloud of 50 MK gas and plasma. + TRUE - FALSE
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{Complete the text: Match up the item letter with each of the possibilities below: E0 - A E1 - B E2 - C E3 - D E4 - E E5 - F E6 - G E7 - H { D (i) }. { C (i) }. { H (i) }. { A (i) }. { G (i) }. { F (i) }. { B (i) }. { E (i) }.
 * type="{}"}

{Which of the following are associated with elliptical galaxies as a standard candle? - observations made through a narrow band 5007 filter + luminous galaxies - star forming regions + the Faber-Jackson relation + relationship between luminosity and central velocity dispersion + quantitative techniques based on Fourier or cross correlation methods + strongly clustered - single dominant young stellar population
 * type="[]"}

{Which of the following are characteristics of cosmogonic X-rays? - gravitationally unbound + an X-ray emitting gas that is roughly a homogeneous intercluster medium + ultra-hot hidden gas - gas can be hidden in intergalactic space + X-ray background - stellar coronal X-rays
 * type="[]"}

Hypotheses

 * 1) Meteors range in size from galaxy clusters to dust grains and molecular clusters.