X-RAY SCATTERED HALO AROUND IGR J17544โ2619
X-RAY SCATTERED HALO AROUND IGR J17544โ2619
X-ray photons coming from an X-ray point source not only arrive at the detector directly, but also can be strongly forward-scattered by the interstellar dust along the line of sight (LOS), leading to a detectable diffuse halo around the X-ray point source. The geometry of small-angle X-ray scattering is straightforward, โฆ