Possible link between primordial black holes and dark matter This article presents an alternative view that dark matter consists of black holes that formed during the first second of our universe's existence. These black holes are called primordial black holes. A scientist working at NASA's Goddard Space Flight Center now suggests that this view may actually be correct. This is due to knowledge of cosmic infrared background and X-ray glow and could explain the high masses of black holes detected last year (Morrow 2016). The study of whether primordial black holes are made of dark matter matches surprisingly well with the 2005 observation by Alexander Kashlinsky, an astrophysicist (Morrow 2016). This showed that the cosmic infrared background is more irregular than can be explained by distant galaxies. This excess structure is assumed to be light emitted when the universe was less than a billion years old. It is likely that these were the first light-emitting objects to form in the universe. Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get an original essay Also in another study done in 2013, the cosmic X-ray background was compared to the cosmic infrared background in the same area of ​​the sky. The first stars mainly emitted optical and ultraviolet light. The irregular X-ray glow in the cosmic X-ray background was quite similar to the unevenness of the cosmic infrared background (Morrow 2016). The only object known to be luminous enough to shine over this wide energy range. is a black hole. Thus, the research team found that primordial black holes must have been popular among early stars, constituting one in five sources contributing to the cosmic infrared background (Morrow 2016). Dark matter still remains one of the most puzzling questions in the field of astrophysics. Scientists currently favor theoretical models that explain dark matter as an exotic particle, but very little evidence has proven its existence. This means that there are very few areas where these particles can still hide. This is why primordial black holes could be dark matter. According to scientists, these first black holes could have formed in several ways. Black holes could have distorted the distribution of mass in the early days of the universe. This distortion would have added a small fluctuation that would still have been visible when the stars began to form. Indeed, during the early years of the universe, the normal matter of the first five hundred million years was too hot to form stars. However, dark matter was not affected by these temperatures because it interacts only through gravity. Dark matter first collapsed into mini halos that allowed the creation of stars (Morrow 2016). It is shown that if black holes play the role of dark matter, the star creation process is accelerated. When cosmic gas falls into halos, matter falling toward the black hole creates X-rays that can explain the observed cosmic infrared background and the cosmic X-ray background observed today..