User:Marshallsumter/Radiation astronomy1/High-velocity galaxies/Quiz

Sloan Digital Sky Survey image is of blazar Markarian 421, illustrating the bright nucleus and elliptical host galaxy. Credit: Sloan Digital Sky Survey.{{free media}}

High-velocity galaxy radiation astronomy is a lecture as part of the radiation astronomy course on the principles of radiation astronomy.

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Quiz

Point added for a correct answer:
Points for an incorrect answer:
Ignore the questions' coefficients:

1 A cosmic ray may originate from what astronomical source?

	Jupiter
	the solar wind
	the diffuse X-ray background
	Mount Redoubt in Alaska
	the asteroid belt
	an active galactic nucleus

2 Complete the text:

Match up the item letter with each of the first astronomical source possibilities below:

Meteors - A

Cosmic rays - B

Neutrons - C

Protons - D

Electrons - E

Positrons - F

Gamma rays - G

Superluminals - H

cosmic rays

galactic nuclei .

comets .

electron-positron annihilation .

weak force nuclear decay .

AGNs .

511 keV photon pair production .

solar wind .

3 What may be the first astronomical cosmic-ray source?

	Jupiter
	the solar wind
	the diffuse X-ray background
	Mount Redoubt in Alaska
	the asteroid belt
	an active galactic nucleus

4 Which of the following is associated with the diffuse X-ray background?

	the Sun
	rather consistently observed over a wide range of energies
	an Aitoff-Hammer equal-area map in galactic coordinates
	an isotropic X-ray background flux was obtained in 1956
	an early high-energy end was obtained by instruments on board Ranger 3
	super soft X-rays are absorbed by galactic neutral hydrogen

5 Which of the following is associated with the Sun as a possible first X-ray source?

	lofting an X-ray detector with a V-2 rocket from White Sands Proving Grounds on August 5, 1948
	in the late 1930s, "the presence of a very hot, tenuous gas surrounding the Sun ... was inferred indirectly from optical coronal lines of highly ionized species"
	early theoretical estimates of black body radiation from the solar corona
	“extensive 1/4 keV emission in the Galactic halo”
	its overall redness has decreased
	ionizing radiation that may originate deep within the Sun does not reach the bottom of a sunspot

6 Complete the text:

A well-known black hole (or black hole candidate) and galactic X-ray source in the constellation Cygnus is .

7 Ionization within the Earth's atmosphere from cosmic rays has what property?

	it's subject to solar eclipses
	it increases underwater
	cosmic rays do not penetrate the atmosphere
	is higher at the base of the Eiffel tower rather than the top
	is obscured by hot-air balloons
	the ionization rate rises at rising elevation

8 Yes or No, An intergalactic medium is a medium in between interplanetary and interstellar media.

	Yes
	No

9 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

File:Outflow from M82 galaxy.jpg .

File:Stephan's Quintet with annotation.jpg .

.

.

File:A2199 Xray Optical2.jpg .

.

.

10 True or False, An intergalactic medium is a rarefied plasma rather than a gaseous medium.

	TRUE
	FALSE

11 Complete the text:

Match up the item letter with each of the possibilities below:

synchrotron X-rays - A

power law - B

inverse Compton - C

thermal Bremsstrahlung - D

black body - E

cyclotron - F

Supergiant Fast X-ray Transients

Galactic diffuse emission .

Crab nebula .

continuum .

accretion disk .

strongly magnetized neutron stars .

12 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

formation of luminous quasars .

stars with an initial mass less than the solar mass .

rotating liquid drops .

primordial is less than 26 per cent .

a solar mixture of elements dominated by hydrogen and helium gas .

around 13 Jupiter masses .

smaller rocky objects .

13 Complete the text:

Discussion of the alternative hypothesis of cloud ejection from the equatorial layer of the Galaxy leads to the conclusion that the halo must be highly and that the coronal clouds are probably regions.

14 True or False, 3C 295 is a galaxy cluster filled with a vast cloud of 50 MK gas and plasma.

	TRUE
	FALSE

15 Yes or No, Active galactic nuclei do not occur in spiral galaxies generally.

	Yes
	No

16 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 .

17 Complete the text:

Match up the radiation object with the likely source:

- L

- M

- N

File:Neusun1 superk1.jpg - O

- P

- Q

- R

File:NGC 7048.jpg - S

File:HST NGC 5728 -O III- emission-line image.jpg - T

a Craters of the Moon volcano .

violet image of Venus .

active galactic nuclear region of NGC 5728 .

cosmic-ray bombardment of the Moon's surface .

blue lights from Io .

neutrino profile of the solar octant .

planetary nebula NGC 7048 .

ultraviolet image of the Earth .

a neutron star in a binary system .

18 Complete the text:

Match up the item letter with each of the first astronomical source possibilities below:

Meteors - A

Cosmic rays - B

Neutrons - C

Protons - D

Electrons - E

Positrons - F

Gamma rays - G

Superluminals - H

cosmic rays

galactic nuclei .

comets .

electron-positron annihilation .

weak force nuclear decay .

AGNs .

511 keV photon pair production .

solar wind .

19 Which of the following are associated with red clump stars as a standard candle?

	many examples within reach of parallax measurements
	internal extinction
	star forming regions
	sufficiently bright
	local group galaxies
	almost as luminous as the brightest red supergiants

20 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

.

.

.

.

.

.

.

.

21 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

Hypotheses

Main article: Hypotheses

1. High-velocity galaxies leave a trail that can be detected.

See also

• Beta-particles astronomy/Quiz
• Electron astronomy/Quiz
• Meson astronomy/Quiz
• Muon astronomy/Quiz
• Neutrino astronomy/Quiz
• Neutron astronomy/Quiz
• Positron astronomy/Quiz
• Proton astronomy/Quiz
• Subatomic astronomy/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
• Spacecraft Query at NASA
• Universal coordinate converter

{{Radiation astronomy resources}}