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Neutron radiation astronomy/Quiz

Neutron astronomy is a lecture as part of the astronomy course on the principles of radiation astronomy.

A closeup view of the Skylab space station photographed against an Earth background from the Skylab 3 Command/Service Module during station keeping maneuvers prior to docking. Credit: NASA.{{free media}}

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Quiz

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1 Ashen light is involved in which of the following?

earthshine
glow of the bright part of the lunar disk
light from different parts of Earth are mixed together
mimics the Earth as a single dot
neutron astronomy
X-ray astronomy

2 Complete the text:

Match up the item letter with each of the possibilities below:
X-ray burster - A
gamma-ray burster - B
X-ray pulsar - C
SFXT - D
soft X-ray transient - E
diffuse X-ray background - F
power law afterglow

magnetized neutron star

.
absorbed by neutral hydrogen

.
Aquila X-1

.
Factor of 10 or greater luminosity increase

.
thermal bremsstrahlung

.

3 Which of the following are radiation astronomy phenomena associated with the gaseous-object Neptune?

Voyager 2
blue rays
clouds
neutron emission
polar coronal holes
meteor emission
rotation

4 Yes or No, Below EeV energies ultra high energy neutrons have boosted lifetimes.

Yes
No

5 Which of the following are characteristic of solar proton astronomy?

the solar wind
polar coronal holes
protons originating from the photosphere
the electron neutrino
GOES 11
neutrons

6 True or False, The surface of the Sun is a known source of neutrons.

TRUE
FALSE

7 Which of the following are radiation astronomy phenomena associated with the Sun?

ultraviolet emission
X-ray emission
gamma-ray emission
neutron emission
7Be emission
meteor emission

8 True or False, A relativistic neutron may fly a megaparsec rather than undergo decay after about 14 minutes because its half-life may grow with energy.

TRUE
FALSE

9 Which of the following are green radiation astronomy phenomena associated with the Sun?

the color of the upper rim as seen from Earth
an excess brightness at or near the edge of the Sun
the iron XIV green line
neutron emission
polar coronal holes
meteor emission
changes in the line-blanketing

10 Which of the following are characteristic of solar green astronomy?

limb faculae
polar coronal holes
black body temperature of the photosphere
the electron neutrino
iron (Fe XIV) green line
neutrons

11 Complete the text:

A neutron star is a type of

that can result from the

of a

during a

supernova event.

12 Which of the following are radiation astronomy phenomena associated with the rocky-object Io?

surface regions reflecting or emitting violet or purple
an excess brightness at or near the edge
red regions that may be phosphorus
neutron emission
polar coronal holes
meteor emission
rotation

13 True or False, Neutrinos emanate from a neutron star because an atomic nucleus the size hypothesized for a neutron star is unstable and the neutrons decompose giving off neutrinos.

TRUE
FALSE

14 Which of the following are radiation astronomy phenomena associated with the apparent liquid-object Earth?

rain
snow
hail
neutron emission
polar coronal holes
meteor emission
rotation

15 True or False, During large solar flares, the region near Mercury may be strongly illuminated with solar neutrons.

TRUE
FALSE

16 Which of the following is not characteristic of a neutrino?

neutrinos are affected by the weak nuclear force
produced by a positron annihilating an electron
a decay product of a neutron
produced by the near surface fusion on the Sun
may have a mass
comes in mutable varieties

17 True or False, Neutron spectroscopy has detected hydrogen and thereby water on the Moon.

TRUE
FALSE

18 Which of the following are radiation astronomy phenomena associated with the plasma-object the Sun?

coronal clouds
H1- ions
X-rays
neutron emission
polar coronal holes
meteor emission
rotation

19 Which types of radiation astronomy directly observe the rocky-object surface of Venus?

meteor astronomy
cosmic-ray astronomy
neutron astronomy
proton astronomy
beta-ray astronomy
neutrino astronomy
gamma-ray astronomy
X-ray astronomy
ultraviolet astronomy
visual astronomy
infrared astronomy
submillimeter astronomy
radio astronomy
radar astronomy
microwave astronomy
superluminal astronomy

20 Which of the following radiation astronomy phenomena are associated with the rocky object Mercury?

apparent impact craters
an excess brightness at or near the edge
the iron XIV line
neutron emission
polar coronal holes
meteor emission
changes in the line-blanketing

21 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

.

22 Which of the following is not a characteristic of X-rays associated with neutron stars?

X-ray jets
X-ray binary
emission peaks indicative of neutron decay
X-ray burster
a low-mass X-ray binary

23 Complete the text:

Match up the item letter with each of the possibilities below:
Meteors - A
Cosmic rays - B
Neutrons - C
Protons - D
Electrons - E
Positrons - F
Gamma rays - G
Superluminals - H
X-ray jets

the index of refraction is often greater than 1 just below a resonance frequency

.
iron, nickel, cobalt, and traces of iridium

.
Sagittarius X-1

.
escape from a typical hard low-mass X-ray binary

.
collisions with argon atoms

.
X-rays are emitted as they slow down

.
Henry Moseley using X-ray spectra

.

24 Sputnik I was involved in which of the following astronomies?

red astronomy
stellar astronomy
neutrino astronomy
radio astronomy
neutron astronomy
X-ray astronomy

25 Complete the text:

Match up the item letter with each of the detectors or satellites below:
Bonner Ball Neutron Detector - A
Multi Mirror Telescope - B
MAGIC telescope - C
Explorer 11 - D
HEAO 3 - E
Helios - F
Pioneer 10 - G
Voyager 1 - H
 
 

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Hypotheses

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Main resource: Hypotheses
  1. More technical questions concerning neutrons and neutron detection safety may be good.

See also

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{{Radiation astronomy resources}}

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