Mass map of galaxy cluster MCS J0416.1–2403 using strong and w

This image shows the galaxy MCS J0416.1–2403, one of six clusters targeted by the Hubble Frontier Fields programme. The varying intensity of blue haze in this image is a mass map created by using new Hubble observations combined with the magnifying power of a process known as gravitational lensing. Strong lensing gives a much more precise indication of the mass at the cluster’s core whilst weak lensing provides valuable information about the mass surrounding the cluster core.

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