Cloud LAB-1 is located in the center of a huge protocluster region of the Universe.
You probably never heard of the cloud SSA22, which belongs to a class of clouds of the Lyman-alpha (Lyman-alpha blob LAB) and represents a “bubble” of cold of outer class, the radiation of which has a set of special parameters.
Cloud SSA22-Lyman-alpha blob 1 (LAB-1) is the first LAB-cloud, discovered by astronomers in 2000.
In addition, it is the largest of these clouds is considered one of the largest space objects known to man today. However, a huge distance of 11.5 billion light-years which separates a cloud of SSA22 and Land, which were and are now an obstacle to its detailed study.
The cloud LAB-1 is located in the center of a huge protocluster region of the Universe and it has an unusually high density,” says Jim Gich (Jim Geach), scientist-astronomer from the University of Hertfordshire (University of Hertfordshire), – “This area is, in the end, will turn or have turned into a huge cluster of large galaxies. And the cloud LAB-1 has a direct relationship to all this”.
To check their assumptions Jim Gich and his colleagues used the capabilities of the radio telescope Atacama Large Millimeter Array (ALMA), which has a high sensitivity in the submillimeter range, which corresponds to the range of radiation of a cloud of cold gas. Scientists have been observing the cloud LAB-1 and earlier, but the higher the resolution of the ALMA telescope allowed scientists to identify the main sources of radiation lurking in the centre of the cloud LAB-1.
Virtually all of the radiation cloud LAB-1 is the radiation of his two huge Central galaxies, which are pre-complete destruction. Around them, like a pack of piranhas, spinning “swarm” of smaller galaxies, is going to “feast” with the remains of their big brothers. Based on new data group Jim Geach was a complex mathematical model, which reproduces everything in the cloud LAB-1, and the result of the calculation of this model, scientists have obtained the emission of Lyman-alpha, which almost exactly corresponds with that observed in reality. And its spectral characteristics indicate that this radiation is ultraviolet light generated during the formation of new stars which is absorbed and pereslushal clouds of cold atomic hydrogen.
“Our picture of the formation of galaxies and clusters of galaxies indicates that all these processes occur in the presence of large concentrations of dark matter,” says Jim Gich, “Some features of the processes suggests that they were influenced by some extraneous factor. In particular, alpha-photon emission Lyman refracted and distorted under the influence of dark matter, giving us a tool to determine its structure.”
In the near future, the group Jim Geach is going to conduct surveillance for other LAB-clouds using the ALMA telescope. And these observations will give into the hands of scientists a lot of new information that can be hidden some answers to questions about the nature of dark matter and astrophysical processes, for which it has a direct impact.
