The total count of black hole mergers we know about today is ten. The recent addition of four black hole mergers which were previously not considered has been documented and accepted by the scientific community. Among the newly added black hole, mergers is a massive one which is much bigger than the Sun.
It is easier to understand the nature of these black hole mergers if we can establish patterns. In 2016, the first black hole merger was detected; this event was widely reported in scientific journals. It was a huge achievement in physics.
The Advanced Laser Interferometer Gravitational Wave Observatory (LIGO) was the first agency that observed the formation of black holes. To properly investigate this discovery, the reports from the LIGO observatory period were analyzed a second time to ensure the details were in order. The information from these reports led to the discovery of the last four black hole mergers.
On July 29, 2017, scientists witnessed one of the most significant black hole mergers. These mergers are measured based on their mass, distance from the earth and spin.
It remains the largest black hole merger to have been discovered. The combined mass is very large, and scientists have reported the black holes were spinning at their fastest speeds which are unlike other mergers they have identified.
It is also the most distant black hole merger at about nine billion light-years in space. According to LIGO, the components of the black hole during the merger were identified with the code blue, while code purple was presented for other black hole mergers. The continuous studies are now making it possible to determine a pattern characteristic of each black hole merger event.
The black hole merger events may have happened following the collapse of large stars such as the Type II supernova. According to scientific speculations, it is also proposed that the black hole merger events currently happening are secondary, in follow up to previous mergers of black holes. The need for larger samples of black holes will increase the chances of identifying particular subgroups of larger holes which had been formed earlier.
The larger black holes have a capacity to draw in all objects in and around its path. This means there are more chances of mergers with smaller black holes. However, such an event is yet to be witnessed and confirmed. The bigger black holes have characteristically shorter signals; this means the random noise them emit is notably shorter. Therefore, it is important to use the proper equipment to detect the size of merged objects.
On the other hand, it is also suggested that the events witnessed and reported by LIGO are mergers between neutron stars. These events lasted for remarkably longer periods, and the signals from the neutron start were weaker thus reducing the volume of space where these events can be detected.
Going forward, the scientists can continue to work with what they have at the moment. The massive black hole merger will be under observation to define patterns. If the patterns can be determined, it will be easier to determine the space where such events are likely to happen.