Image:Cygx1 spectrum.jpg

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[edit] Summary

X-ray spectrum of Cygnus X-1.

Description

This is the X-ray energy spectrum of Cygnus X-1, a candidate black hole. The data is from the Chandra space telescope. The original caption read as follows:

These data profile the X-ray spectral line from iron atoms in the accretion disk around the black hole. Note how the profile is skewed toward energies lower than the expected peak at 6.4 keV. The Chandra data on Cygnus X-1 show evidence of strong gravitational effects, with some atoms as close as 100 miles from the black hole, but no evidence of spin. Chandra X-ray Observatory ACIS/HETGS spectrum.
Source

Chandra X-ray Spectrum of Cygnus X-1
Date

March 30, 2008
Author

NASA/CXC/SAO/J.Miller et al.
Permission
(Reusing this image)

see below

[edit] Licensing

Public domain
 This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy).

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File history

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Date/TimeDimensionsUserComment
current18:49, 30 March 2008729×576 (132 KB)RJHall (X-ray spectrum of Cygnus X-1.)
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Metadata

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Orientation Normal
Horizontal resolution 72 dpi
Vertical resolution 72 dpi
Software used Adobe Photoshop 7.0
File change date and time 12:39, 16 September 2003
Color space sRGB