Radiation astronomy/Tauons/Quiz

From Wikiversity
Jump to navigation Jump to search
The “continuum” and “line” positron spectra from LKP annihilations for mB(1) = 1000 GeV. Credit: Satoshi Tsuchida and Masaki Mori.{{fairuse}}

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

You are free to take this quiz based on tauon astronomy at any time.

To improve your score, read and study the lecture, the links contained within, listed under See also, External links, and in the {{principles of radiation astronomy}} and {{radiation astronomy resources}} template. This should give you adequate background to get 100 %.

As a "learning by doing" resource, this quiz helps you to assess your knowledge and understanding of the information, and it is a quiz you may take over and over as a learning resource to improve your knowledge, understanding, test-taking skills, and your score.

Suggestion: Have the lecture available in a separate window.

To master the information and use only your memory while taking the quiz, try rewriting the information from more familiar points of view, or be creative with association.

Enjoy learning by doing!

Quiz[edit | edit source]


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 antitauon is a tauon spinning backward in time.


4 Complete the text:

Tauons 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, Tauons 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


9 True or False, The tauon 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 Yes or No, Below EeV energies ultra high energy tauons have boosted lifetimes.


12 Complete the text:

The tauon is an

subatomic particle with a mean

of 2.9 x 10


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


14 Which of the following is not characteristic of a tauon?

affected by the weak nuclear force
produced by a positron annihilating an electron
a decay product of an LKP annihilation
produced by dark matter
may have a mass
has an anti particle

15 True or False, The surface of the Sun is a known source of tauons.


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 tauons.


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.

Hypotheses[edit | edit source]

  1. A way can be found to make the quizzes at least as engaging as the lectures.

See also[edit | edit source]

External links[edit | edit source]

{{Radiation astronomy resources}}