Supernova X-rays/Quiz

Supernova X-rays is a lecture about supernovas from a stellar perspective. This quiz is based on the lecture.

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Quiz
{A star's explosion that expels most or all of its material at a velocity of up to 30000 km/s (10% of light speed, powering a shock wave into the interstellar medium is supernova shock breakout from a? { red giant (i) }.
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{Which of the following are attributes that make Type Ia supernovae potentially valuable standard candles? - occur in dusty regions + present in the old stellar populations of all galaxies - they have characteristic mottling + they lack hydrogen lines in their optical spectra + they lack helium lines in their optical spectra - have incipient resolution + during the first month after maximum light they do have a strong absorption feature produced by the red doublet (λ6347, λ6371 Å) of singly ionized silicon
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{The non-detection of X-rays reveals that the region around the site of a supernova explosion is relatively devoid of? { material (i) }.
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{Which of the following are associated with standard candles? + Cepheid variables + Type Ia supernovae + the Sun + stellar spectral type + absolute magnitude + Tully-Fisher relation
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{Yes or No, A Type Ia supernova is an explosion of a white dwarf in orbit around either another white dwarf or a red giant star. + Yes - No
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{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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{Which of the following are associated with SN 1987A? + neutrinos + blue light + supergiant progenator + at its occurrence it was the brightest supernova and nearest one to Earth in the last century + in the Large Magellanic Cloud (LMC) - almost as luminous as the brightest red supergiants
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{The brightest stellar explosion ever recorded is? { SN 2006gy (i) }.
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{Which of the following are associated with novae as a standard candle? + luminous + old stellar population - amount of Cherenkov light + relatively dust-free environments + MMRDs + easy to recognize
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{Yes or No, SN 2014J generated extensive amounts of X-rays. - Yes + No
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Hypotheses

 * 1) Distances are only as relative as the time it takes to travel them.