Supernova X-rays/Quiz

File:Som 3 05 p0.jpg

Rosat image of the Vela supernova remnant and its surroundings. Credit: H.E.S.S. collaboration, F. Aharonian et al.

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

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Quiz

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1 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?

.

2 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

3 The non-detection of X-rays reveals that the region around the site of a supernova explosion is relatively devoid of?

.

4 Which of the following are associated with standard candles?

	Cepheid variables
	Type Ia supernovae
	the Sun
	stellar spectral type
	absolute magnitude
	Tully-Fisher relation

5 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

6 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

File:Maximum magnitude-rate of decline for novae.gif .

File:B-, R-, I-, and H-band Tully-Fisher relations.gif .

File:Blackbody spectral density.gif .

.

File:A further away schematic galaxy.gif .

File:1-agnsasanewst.jpg .

File:Planetary nebulae H-R.gif

File:Luminosity function for globular clusters.gif .

7 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

8 The brightest stellar explosion ever recorded is?

.

9 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

10 Yes or No, SN 2014J generated extensive amounts of X-rays.

	Yes
	No

Hypotheses

Main resource: Hypotheses

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

See also

• Distances/Quiz

External links

• International Astronomical Union
• NASA/IPAC Extragalactic Database - NED
• NASA's National Space Science Data Center
• The SAO/NASA Astrophysics Data System
• SDSS Quick Look tool: SkyServer
• SIMBAD Astronomical Database
• SIMBAD Web interface, Harvard alternate
• Universal coordinate converter

{{Radiation astronomy resources}}