Radiation astronomy/Submillimeters/Quiz

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This is the Herschel Space Observatory. Credit: NASA.

Submillimeter astronomy is a lecture from the radiation astronomy department for the course on the principles of radiation astronomy.

You are free to take this quiz based on submillimeter 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}} template. This should give you adequate background to get 100 %.

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Enjoy learning by doing!

Quiz[edit | edit source]


1 True or False, Microwave radiation ranges from 1 m to 1 mm.


2 Imaging brown dwarfs involves which of the following:

far-infrared (submillimeter) observations at 350 microns
neutrino detection
heating of the nearby gas and dust
near-infrared covering 1.3 and 2.2 microns
infrared covering 4.5 and 8.0 microns

3 True or False, Submillimeter radiation ranges from 100 µm to 1 mm.


4 Complete the text:

Astronomers place the submillimetre waveband between the


wavebands, typically taken to be between a few hundred micrometres and a millimetre.

5 True or False, There are submillimeter or submillimeter mineral containing meteorites.


6 Complete the text:

The detection of absorption by interstellar

in the

band occurs along the sight line to the submillimeter continuum sources W49N and W51.

7 True or False, Microwave radiation ranges from 1 micron to 1 mm.


8 Submillimeter radiances can be matched by models which include ice particles of?

9 Yes or No, The silicates used to model the cometary coma dust are olivene (Mg-rich is green) and the pyroxene, asbestos.


10 Using HIFI instrument aboard the Herschel Space Observatory, the first detection of what ion occurred on March 1 and March 23, 2010?

11 True or False, The Mauna Kea Observatories are used for scientific research across the electromagnetic spectrum from visible light to radio, and comprise the largest such facility in the world.


12 The BLAST is a what.

13 True or False, The focus of the Submillimeter Wave Astronomy Satellite is five spectral lines from water, isotopic water, isotopic carbon dioxide, molecular oxygen, and neutral carbon.


14 The reason in principle that your automobile is not detecting submillimeter rays is

it is sitting on top of the Earth's crust below a thick atmosphere
it is low on fuel
those components that may respond to submillimeter rays are not hooked up to needed counting electronics
the top is not down
the Moon is visible
the Sun is behind the clouds

15 Complete the text:

A three-color (850, 650, and 350 GHz) single-pixel

system has been installed on the

Submillimeter Telescope (ASTE) and several massive star forming regions were mapped to derive submillimeter SEDs of these sources.

16 True or False, On the whole the emission strength is low in the submillimeter for astronomical objects.


17 Complete the text:

The submillimeter emission from a cometary

can be estimated under the assumption of thermal


18 True or False, The absorption and reradiation of light by dust in the history of galaxy formation and evolution is the submillimeter extragalactic background light (EBL).


19 Handling cosmic rays when using a submillimeter bolometer as a detector involve which of the following:

a rapid rise in temperature
not practical to prevent cosmic-ray events
understanding their behavior
operating in a relatively high cosmic-ray flux

20 True or False, Radio observations taken by the Bernese Multibeam Radiometer for KOSMA (BEMRAK) at submillimeter wavelengths show an impulsive component that starts simultaneously with high-energy proton acceleration and the production of pions.


21 High-energy particle acceleration during an energetic solar flare may involve which of the following at submillimeter wavelengths:

a rapid rise in temperature
a gradual, long-lasting component
large apparent source sizes
synchrotron emission
a magnetic field strength of ≥ 200 Gauss
a close correlation in time and space of radio emission with pion production

Hypotheses[edit | edit source]

  1. Submillimeter radiation can differentiate chemical species.

See also[edit | edit source]

External links[edit | edit source]

{{Radiation astronomy resources}}