File:Comptel.png
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Comptel.png (591 × 422 pixels, file size: 184 KB, MIME type: image/png)
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DescriptionComptel.png |
English: The Imaging Compton Telescope (COMPTEL) utilizes the Compton Effect and two layers of gamma-ray detectors to reconstruct an image of a gamma-ray source in the energy range 1 to 30 million electron volts (MeV). Gamma rays from active galaxies, radioactive supernova remnants, and diffuse gamma rays from giant molecular clouds can be studied with this instrument. |
Date | |
Source | The Imaging Compton Telescope (COMPTEL), url=http://heasarc.gsfc.nasa.gov/docs/cgro/cgro/comptel.html. |
Author | Neil Gehrels, Astrophysics Science Division at NASA/ GSFC. |
COMPTEL's upper layer of detectors are filled with a liquid scintillator which scatters an incoming gamma-ray photon according to the Compton Effect. This photon is then absorbed by NaI crystals in the lower detectors. The instrument records the time, location, and energy of the events in each layer of detectors which makes it possible to determine the direction and energy of the original gamma-ray photon and reconstruct an image and energy spectrum of the source.
Licensing[edit]
Public domainPublic domainfalsefalse |
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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Original upload log[edit]
Date/Time | Dimensions | User | Comment |
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5 April 2013, 17:38:07 | 591 × 422 (128481 bytes) | Marshallsumter (talk · contribs) | User created page with UploadWizard |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:54, 25 November 2014 | 591 × 422 (184 KB) | GifTagger (talk | contribs) | Bot: Converting file to superior PNG file. (Source: Comptel.gif). This GIF was problematic due to non-greyscale color table. |
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