The Canadian Hydrogen Intensity Mapping Experiment

There are no moving parts on a radio telescope that will attempt to map the recent history of nearby galaxies by measuring the radio signature of hydrogen gas. The Canadian Hydrogen Intensity Mapping Experiment, also referred to as CHIME is the radio telescope that will be used to measure over half the sky with each rotation of the Earth. In the hope to learn more about the nature of the substance that is driving the galaxies away from each other the innovative design shown below in Figure 1 consists of cylindrical reflectors roughly the size of six hockey rinks combined and bundled radio receivers each in the shape of a snowboard half-pipe.

Figure 1: CHIME will consist of five cylindrical reflectors that are 20m x 100m with feeds, amplifiers

2003). The gravitational effects of dark matter in the early stages of the universe dominated in helping the stars and galaxies to form, however, the anti-gravitational effects of dark energy have arose in this new time period causing the expansion of the universe to accelerate. What has remained as one of the greatest mysteries in modern science is the nature of the dark energy that is driving the accelerated expansion of the universe (Weinberg, D, 2013). By the same token, a cumulative agreement around the scientific community is that there is more unknown than is known in regards to dark energy, however it is understood how much dark energy is out there because of how it affects the universe’s expansion. Numerous research institutions collaborated in defining baryon acoustic oscillations (BAO) as, small ripples in the universe that froze in place creating a structure of acoustic pressure waves during the formation approximating around 370,000 years after the Big Bang and those pressure waves are called baryon acoustic oscillations (Leibso.S, 2014). To point out, it is not the first experiment looking to measure dark energy, for instance, what scientist’s considered “a baby picture of the universe”, researchers conducted data analysis over the course of nine years from the Wilkinson Microwave Anisotropy

Whenever there is a rate of increase in the distance from Earth and the light source moves away from an observer the relative difference between the object observed and emitted wavelengths (or frequency) is known as“redshift” (Appenzeller. I, 2009). In particular, the redshift range from 0.8 to 2.5 will be the focus in the mapping distribution of CHIME. Astonishingly the data recovered will be used to construct a three-dimensional map of the cosmos structure that in fact be the largest map ever observed of the universe. Cosmologists will have the ability to better recognize and understand the cause of the universe's accelerating expansion. Furthermore, CHIME will also reveal for the first time in history the way the universe has changed over time since the universe began some 13.7 billion years ago. To put things into perspective, signals traveling at the speed of light over the course of human history have taken longer to reach Earth than those that will be revealed in the nearest sections from