Stephen Boughn co-authored work investigating the connection between the cosmic microwave background and the cosmic X-ray background. A cross-correlation between their sky maps can probe the Integrated Sachs-Wolfe effect, providing a cosmological test that uses more than the microwave map alone.
The cited study specifically investigated foreground sources that might mimic the correlation. Its interpretation depended on testing those alternatives, illustrating why detection of a statistical association and identification of its physical origin are separate scientific steps.[ref]
Investigating the origins of the CMB-XRB cross correlation by Stephen Boughn and Robert Crittenden. Abstract: expected ISW correlation, alternative foreground origins and the interpretation of the observed signal
Portrait of Stephen Boughn
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