Blog 10 Black holes emit more than radiation at times of feeding or collision. Written by Mark Kingston Levin, PhD.
Figure 1. Black hole caught for the first time eating a star followed by x-rays bursts. Energy and matter escape in two jets 180 degrees apart including radio waves and other electromagnetic emissions.
Blog 10 Black holes radiation by Mark Kingston Levin.
Scientists discovered as early as 2014, X-ray signal bursts due to a black hole devouring a passing star. The high energy bursts were followed by radio waves two week later. The radio waves may have been produced by the exodus of highly energetic particles streaming out of the black hole, according to Dheeraj Pasham of MIT and Sjoert van Velzen of Johns Hopkins University.
Las Cumbres Observatory’s All-sky Automated Survey for Supernovae, an array of robotic telescopes located around the globe, picked up signals from a black hole feeding about 300 million lightyears away known as ASASSN-14li. Many of these robotic telescopes immediately turned to track this black hole feeding followed by a powerful explosion of electromagnetic energy and particles capable of destroying solar systems and planets like Earth.
This information will be useful to develop better computer models of galaxy evolution. Temperatures must be cool for stars to form. Black hole emissions of energy jets and matter heat up these regions of space, which slows star formation. The amount of slowing needs to be determined. Scientists and engineers still need to quantify how much delay and the rate in terms of energy and matter released. One important step in black hole astronomy may lead to these answers over time.
The illustration on the left is an artist’s interpretation of what happens when a star gets caught by the intense gravity of a black hole and then destroyed. The black hole later emits a jet of plasma composed of the debris left from the star’s destruction, as shown on the right side. It is called “burping” at nearly the speed of light. Similar feeding and burping events were seen on Jan. 20, 2018 by NASA ‘s space telescope and interpreted by both American and Chinese researchers in China, at the University of Science and Technology. They both describe “tidal disruption flares using data from NASA’s Wide-field Infrared Survey Explorer (WISE), a space telescope that has photographed the entire sky in infrared light.”
“This is the first time we have clearly seen the infrared light echoes from multiple tidal disruption events,” said scientist Sjoert van Velzen, a postdoctoral fellow at Johns Hopkins University, who is a lead investigator of the NASA research.
Dr. Levin was born and grew up in Vermont with many winters spent in Florida as a child. As a teenager he wrote poetry, served as a lifeguard and played football. He currently enjoys sailing, exploring underwater caves, snorkeling, writing science fiction and other pursuits. After working on the Apollo and Mars projects, he returned to school to study under Nobel Laureate Paul Dirac, obtaining his PhD in 2.5 years. Dr. Levin founded two companies and served the science policy apparatus in President Ford’s administration. He has been published over 44 times in scientific literature and was awarded over 32 US patents. The science fiction writer is now emerging with his first work, a trilogy entitled 30th Century. The first award-winning book, 30th Century: Escape, is currently available on Amazon. Book two in the series, 30th Century: Revived, should be released before the end of April 2018.