AZIMUTHAL STRUCTURE OF THE Cyg X-2 X-RAY DUST HALO

There is little information concerning the azimuthal distribution of X-rays in dust-scattering halos. This paper describes a Chandra observation of the bright source Cyg X-2 designed specifically for this purpose. After measuring and subtracting [approximate]10% instrument effects, we find the scatt...

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Bibliographic Details
Published in:The Astrophysical journal 2013-05, Vol.769 (1), p.1-9, Article 17
Main Authors: Seward, F D, Smith, R K
Format: Article
Language:English
Subjects:
Approximation
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BRIGHTNESS
DATA PROCESSING
DISTRIBUTION
Dust
DUSTS
Fluctuation
FLUCTUATIONS
Halos
Measuring instruments
SCATTERING
SURFACES
X RADIATION
X-rays
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Summary:There is little information concerning the azimuthal distribution of X-rays in dust-scattering halos. This paper describes a Chandra observation of the bright source Cyg X-2 designed specifically for this purpose. After measuring and subtracting [approximate]10% instrument effects, we find the scattering halo to be rather uniform with possible fluctuations in the surface brightness of only 2%. Observations and data processing are discussed in detail. Some information about the dust distribution is derived.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/769/1/17