Radiation astronomy/Muons/Quiz

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This is an image obtained from muon radiography of Japan's Asama volcano. Credit: H T M Tanaka.

Muon astronomy is a lecture and an article about a developing radiation astronomy. It is also a mini-lecture for a quiz section as part of the astronomy department course on the principles of radiation astronomy.

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1. True or False, The radius of the proton is 4 percent smaller than previously estimated.


2. Which of the following are associated with muon astronomy?

high-energy cosmic rays
secondary and tertiary cosmic rays
nuclear interactions between neutrons and quartz
nuclear interactions between muons and calcite
production rates of a few atoms per gram of rock per year
build-up of cosmogenic nuclides through time

3. True or False, An antimuon is a muon spinning backward in time.


4. Complete the text:

Muons are produced, along with other particles, when interact with in the Earth's atmosphere to produce of secondary particles.

5. True or False, In the sky as seen by AMANDA-II the downgoing atmospheric muon background is responsible for the thick band of events below the horizon.


6. TeV muons from gamma-ray primaries are rare because?

only produced by higher energy gamma rays
suppressed gamma-ray flux
decreasing flux at the source
GeV gamma rays
interstellar light

7. True or False, Muons inherit the high energy of the parent cosmic rays.


8. Complete the text:

The nuclear processes that produce cosmogenic 36Cl in rocks are , neutron , and capture.

9. True or False, The muon sky as seen by AMANDA-II shows a systematic source coincident with the Galactic nucleus.


10. Muon radiography can indeed produce useful images of the internal structure of?


11. True or False, Muon production in Ca and K becomes more important with increasing depth.


12. Complete the text:

The muon is an subatomic particle with a mean of 2.2 .

13. True or False, Like all elementary particles, the muon has a corresponding antiparticle of opposite spin but equal mass and charge (+1).


14. Complete the text:

Match up the muonic device with its image below:
muon telescope - A
proton accelerator - B
neutron telescope - C
Baikal Neutrino Telescope NT200 - D
muon spectrometer - E
IceCube - F
Veritas - H
compact solenoid - K
Solar neutron detector.jpg
VERITAS array.jpg
Scherrer Insitute proton accelerator.jpg
HiFi muon spectrometer.jpg
Hegra and not bob tubbs 2001.jpg
Figs nt200+goldplated.png

15. True or False, A small amount of aluminum-26 is produced by collisions of magnesium atoms with cosmic-ray protons.


16. Which of the following are associated with AMANDA's search for monopoles?

its large volume
equivalent charge
amount of Cherenkov light
square of the charge
passing through the Earth
large monopole mass

17. Yes or No, The spin carried by quarks is not sufficient to account for the total spin of muons.


18. Complete the text:

The point source analysis optimizes the criteria on spectra, although it has reasonable to softer spectra.

19. True or False, The extremely low ambient photon flux in deep ice provides the opportunity to monitor the galaxy for supernova explosions.


20. Complete the text:

Charged-current charged pion production is a process in which a interacts with an atomic and produces a , a charged and recoiling nuclear fragments.

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